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HomeMy WebLinkAboutSWP273529(7)Lake Ave S / Rainier Ave S Storm System SWP-27-3529 City KCBW Model Results Existing System: 24-24-24 New System: 36-24-24 Potential Upsize in Lake Ave: 36-24-30 May, Nov. 2010 D. Carey, Surface Water Utility Lake Ave s / Rainier Ave S Storm Project Pipe Size Alternatives - Using King County Backwater Model Run 1 Design Flows per KCBW iteration 24-24-24 Design Flow Existing System Existing Design Flow Ex. 100-yr City Location Size Ex. 25-yr Fut. 25 yr Ex. 25 yr Ex. 100 yr Pine tt (in.) (cfsl (cfs) (cfs) -Fut. 25-vr 11/1/10 D. Carey Run 30 36-24-24 New 36" to SPU New Pipes Ex.25-yr Ex.100-yr (in.) (cfs) -Fut. 25-vr Run 11 36-24-30 New 36" to SPU New Pipes Ex.25-yr Ex.100-yr (in.) (cfs) `Fut. 25-vr 1 43x27 28.00 30.00 ok ok ok ok ok ok 2 43x27 28.00 30.00 ok ok ok ok ok ok 3 Box Culv.* 120 22.40 24.00 ok ok ok ok ok ok 4 24 19.65 21.05 ok ok 36 ok ok 36 ok ok 5 24 19.65 21.05 ok ok 36 ok ok 36 ok ok 6 24 19.65 21.05 ok ok 36 ok ok 36 ok ok 7 24 19.65 21.05 ok ok 36 ok ok 36 ok ok 8 24 19.65 21.05 ok ok 36 ok ok 36 ok ok 9 SPU Cross 24 16.79 17.99 ok ok ex. 24 ok ok ex. 24 ok ok 10 S 2nd St 24 16.79 17.99 ok 17.39 ok ok 30 ok ok 11 24 14.60 15.65 ok 15.13 ok ok 30 ok ok 12 Lake Ave 24 14.60 15.65 13.56 13.56 ok ok 30 ok ok 13 24 14.60 15.65 12.52 12.52 ok 16.17 30 ok ok 14 24 12.70 13.61 10.43 10.43 ok 14.06 30 ok ok 15 24 12.70 13.61 10.88 10.88 ok 14.06 30 ok ok 16 24 12.70 13.61 10.88 10.88 ok 14.06 30 ok ok 17 24 12.70 13.61 10.43 10.43 ok 13.15 30 ok ok 18 24 8.41 9.01 7.21 7.21 ok 9.01 30 ok ok 19 1 24 1 8.41 9.01 7.21 7.21 ok 9.31 30 ok ok ok = No overflow at design event flow rate. *1 Value equals overflow at or above existing 100-year Design Flow. *2 Bold Value equals overflow between ex. 25- and 100-year Design flow. *3 Bold, Shaded, Value equals overflow less than existing 25-year Design flow. *4 Bold, Shaded Red, Value equals overflow less than existing 10-year Design flow. Lake Ave - CITY KCBW Results-02.x1s 150A 100A 95A 3 4 i 79A 125 120A South 2nd St 115A SPU Water Mains PMX 107A PMX 106A 105A 0� cl+y KCI�J pipe - South 3rd St Sax C,I,iv( rt— R&ORitr ABC. EX. RIM or -2132 pp p jj GY`•1 / \ 150AAIAJAK � We, r 1 145A — I� 140A . 8 r 1� 138A 137A csf> I� 136A 135A_AH — 2 G. 6 i TXP( 13 130A 30 0125 0A 20,L9 115A_AF,AA<A$l 3 v, S. P Mx l0A pp�� e �Tyn�,I C3,r _ lAco�mc, _ 30. I JOIA La} --,, NW '5A_Z,AA,Y 78A 79A 3o,i 05A 95A_AE J 100A 00 Lug 3 30A_ABACAP 3 0, 2S ( y 1 Ca -1, Nvv 4 C I Is I lr+ ice, ri,l/Dr1 I t J // ex.2y Pire, SWP-27-3529 Lake Ave S / Rainier Ave S Storm Project 4/21/10 Existing Storm System Backwater Analysis D.Carey KING COUNTY DEPARTMENT OF NATURAL RESOURCES Water and Land Resources Division IU II JuJ�-4bot ZSrr BACKWATER ANALYSIS PROGRAM Version 6.00 IZ Bt�w114 lo1yr ��� 2Srr I S File Opened for Reading:Expipe.bwp 13, 1y, DV/r �IOw 16,17,1811 10-ir REVIEW OF THE PIPE -DATA G&O PI OUTLET INLET IN OVERFLO BND STRU Q Node # LENGTH DI TY ELEV ELEV TY KE K M C Y ELEV ANG WIDE RAT 79 1 154.00 36 4 17.26 17.47 8 .50 .0083 2.0 .0496 .57 30.17 0 5.0 0.00 80 2 38.00 36 4 17.37 17.09 8 .50 .0083 2.0 .0496 .57 30.57 45 5.0 0.25 95 3 200.00120 1 17.50 18.19 5 .50 .0098 2.0 .0398 .67 30.25 10 10.0 0.14 100 4 42.00 24 1 18.19 18.47 5 .50 .0098 2.0 .0398 .67 30.27 0 4.0 0.00 105 5 215.00 24 1 18.47 19.00 5 .50 .0098 2.0 .0398 .67 27.56 40 4.0 0.00 106 6 97.00 24 1 19.00 18.64 5 .50 .0098 2.0 .0398 .67 29.39 0 4.0 0.00 107 7 106.00 24 1 18.64 18.72 5 .50 .0098 2.0 .0398 .67 30.97 0 4.0 0.00 110 8 115.00 24 1 18.72 18.84 5 .50 .0098 2.0 .0398 .67 31.48 11 4.0 0.17 115 9 61.00 24 1 18.90 21.08 5 .50 .0098 2.0 .0398 .67 30.78 0 4.0 0.00 120 10 80.00 24 1 21.09 21.11 5 .50 .0098 2.0 .0398 .67 28.83 30 4.0 0.15 -0vrr I�•4 125 11 27.00 24 1 21.11 21.18 5 .50 .0098 2.0 .0398 .67 29.19 30 4.0 0.00 -15.1 130 12 110.00 24 1 21.18 21.64 5 .50 .0098 2.0 .0398 .67 27.97 0 4.0 0.00 - X 13.5-< 135 13 178.00 24 1 21.64 21.90 5 .50 .0098 2.0 .0398 .67 26.76 0 4.0 0.15- X 1Z.5 410y, 136 14 78.00 24 1 21.90 21.95 5 .50 .0098 2.0 .0398 .67 26.62 0 4.0 0.00- X 1e,4 110 Ir 137 15 77.00 24 1 21.95 22.14 5 .50 .0098 2.0 .0398 .67 27.29 0 4.0 0.00- X 10.1 4-10yr 138 16 75.00 24 1 22.14 22.14 5 .50 .0098 2.0 .0398 .67 27.87 0 4.0 0.00 - X 10.1 L1oyl 140 17 86.00 24 1 22.14 22.34 5 .50 .0098 2.0 .0398 .67 27.51 5 4.0 0.51 - x 10•4 41oy/ 145 18 145.00 24 1 22.34 22.64 5 .50 .0098 2.0 .0398 .67 28.16 0 4.0 0.00 -X 7.7 <IDyr 150 19 123.00 24 1 22.64 23.05 5 .50 .0098 2.0 .0398 .67 File Opened for Reading:Expipe.bwp File Opened for Reading:ExTW1.bwt HW/TW Data File:ExTW1.bwt Stage(ft) Discharge(cfs) 1.1 10.00 1.4 15.00 1.7 20.00 2.6 35.00 Zero Stage Elevation:17.09 feet BACKWATER COMPUTER PROGRAM FOR PIPES Pipe data from file:Expipe.bwp Surcharge condition at intermediate junctions Tailwater from HW/TW File:EXTW1.bwt Discharge Range:22. to 30. Step of 1. [cfs] Overflow Elevation:28.81 feet Weir:NONE Upstream Velocity:0.1 feet/sec ExBW-2.doc Page 1 of 8 Design flow for Existing Conditions: from G&O Feb. 2003 Pre -Design Analysis Report At Node 79A: Q 2 year = 19.6 cfs, Q 10 yr = 23.5 cfs, Q 25yr = 27.8 cfs ( rr� 30, cf 3rd iteration, 7th iteration PIPE NO. 1: 154 LF-43"X27"CMAP @ 0.14% OUTLET: .17.26 INLET: 17.47 INTYP: 8 JUNC NO. 1: OVERFLOW -EL: 30.17 BEND: 0 DEG DIA/WIDTH: 5.0 Q-RATIO: 0.00 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 22.00 2.64 20.11 * 0.024 1.04 2.25 1.65 1.65 2.40 2.64 1.80 23.00 2.76 20.23 * 0.024 1.06 2.25 1.71 1.71 2.50 2.76 1.87 24.00 2.89 20.36 * 0.024 1.47 2.25 1.77 1.77 2.60 2.89 1.95 25.00 3.03 20.50 * 0.024 1.51 2.25 1.83 1.83 2.71 3.03 2.02 26.00 3.17 20.64 * 0.024 1.55 2.25 1.89 1.89 2.82 3.17 2.08 27.00 3.32 20.79 * 0.024 1.59 2.25 1.95 1.95 2.94 3.32 2.14 28.00 3.47 20.94 * 0.024 1.63 2.25 2.01 2.01 3.06 3.47 2.21 29.00 3.64 21.11 * 0.024 1.68 2.25 2.07 2.07 3.19 3.64 2.28 30.00 3.82 21.29 * 0.024 1.72 2.25 2.13 2.13 3.34 3.82 2.34 PIPE NO. 2: 38 LF-43"X27"CMAP @-0.74% OUTLET: 17.37 INLET: 17.09 INTYP: 8 JUNC NO. 2: OVERFLOW -EL: 30.57 BEND: 45 DEG DIA/WIDTH: 5.0 Q-RATIO: 0.25 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 22.00 3.50 20.59 * 0.024 1.04 0.00 2.74 2.74 3.22 3.50 1.85 23.00 3.67 20.76 * 0.024 1.06 0.00 2.86 2.86 3.36 3.67 1.92 24.00 3.84 20.93 * 0.024 1.47 0.00 2.99 2.99 3.51 3.84 2.00 25.00 4.03 21.12 * 0.024 1.51 0.00 3.13 3.13 3.67 4.03 2.07 26.00 4.22 21.31 * 0.024 1.55 0.00 3.27 3.27 3.83 4.22 2.13 27.00 4.42 21.51 * 0.024 1.59 0.00 3.42 3.42 4.00 4.42 2.19 28.00 4.63 21.72 * 0.024 1.63 0.00 3.57 3.57 4.18 4.63 2.26 29.00 4.85 21.94 * 0.024 1.68 0.00 3.74 3.74 4.36 4.85 2.33 30.00 5.09 22.18 * 0.024 1.72 0.00 3.92 3.92 4.57 5.09 2.39 PIPE NO. 3: 200 LF - **"CP @ 0.35% OUTLET: 17.50 INLET: 18.19 INTYP: 5 JUNC NO. 3: OVERFLOW -EL: 30.25 BEND: 10 DEG DIA/WIDTH:10.0 Q-RATIO: 0.14 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 17.60 2.40 20.59 * 0.012 0.96 0.91 3.09 3.09 2.40 2.12 0.95 18.40 2.57 20.76 * 0.012 0.99 0.92 3.26 3.26 2.57 2.26 0.95 19.20 2.74 20.93 * 0.012 1.01 0.94 3.43 3.43 2.74 2.39 0.95 20.00 2.93 21.12 * 0.012 1.03 0.96 3.62 3.62 2.93 2.55 0.96 20.80 3.12 21.31 * 0.012 1.05 0.98 3.81 3.81 3.12 2.70 0.98 21.60 3.32 21.51 * 0.012 1.07 1.00 4.01 4.01 3.32 2.87 1.00 22.40 3.53 21.72 * 0.012 1.09 1.01 4.22 4.22 3.53 3.04 1.01 23.20 3.75 21.94 * 0.012 1.11 1.03 4.44 4.44 3.75 3.22 1.03 24.00 3.99 22.18 * 0.012 1.13 1.05 4.68 4.68 3.99 3.42 1.05 ExBW-2.doc Page 2 of 8 PIPE NO. 4: 42 LF - 24"CP @ 0.67% OUTLET: 18.19 INLET: 18.47 INTYP: 5 JUNC NO. 4: OVERFLOW -EL: 30.27 BEND: 0 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.00 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 15.44 2.49 20.96 * 0.012 1.42 1.32 2.40 2.40 2.29 2.49 1.93 16.14 2.69 21.16 * 0.012 1.45 1.37 2.57 2.57 2.47 2.69 1.98 16.84 2.89 21.36 * 0.012 1.48 1.41 2.74 2.74 2.66 2.89 2.03 17.54 3.12 21.59 * 0.012 1.51 1.46 2.93 2.93 2.87 3.12 2.09 18.25 3.35 21.82 * 0.012 1.54 1.50 3.12 3.12 3.07 3.35 2.16 18.95 3.59 22.06 * 0.012 1.57 1.56 3.32 3.32 3.29 3.59 2.23 19.65 3.84 22.31 * 0.012 1.60 1.61 3.53 3.53 3.52 3.84 2.29 20.35 4.10 22.57 * 0.012 1.62 1.68 3.75 3.75 3.76 4.10 2.36 21.05 4.38 22.85 * 0.012 1.65 1.76 3.99 3.99 4.02 4.38 2.44 PIPE NO. 5: 215 LF - 24"CP @ 0.25% OUTLET: 18.47 INLET: 19.00 INTYP: 5 JUNC NO. 5: OVERFLOW -EL: 27.56 BEND: 40 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.00 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI 15.44 3.12 22.12 * 0.012 1.42 2.00 2.49 2.49 2.81 3.12 2.05 16.14 3.42 22.42 * 0.012 1.45 2.00 2.69 2.69 3.09 3.42 2.11 16.84 3.74 22.74 * 0.012 1.48 2.00 2.89 2.89 3.38 3.74 2.17 17.54 4.09 23.09 * 0.012 1.51 2.00 3.12 3.12 3.69 4.09 2.24 18.25 4.44 23.44 * 0.012 1.54 2.00 3.35 3.35 4.01 4.44 2.32 18.95 4.80 23.80 * 0.012 1.57 2.00 3.59 3.59 4.34 4.80 2.40 19.65 5.19 24.19 * 0.012 1.60 2.00 3.84 3.84 4.69 5.19 2.48 20.35 5.59 24.59 * 0.012 1.62 2.00 4.10 4.10 5.05 5.59 2.56 21.05 6.01 25.01 * 0.012 1.65 2.00 4.38 4.38 5.44 6.01 2.65 PIPE NO. 6: 97 LF - 24"CP @ -0.37% OUTLET: 19.00 INLET: 18.64 INTYP: 5 JUNC NO. 6: OVERFLOW -EL: 29.39 BEND: 0 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.00 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 15.44 4.06 22.70 * 0.012 1.42 0.00 3.12 3.12 3.86 4.06 1.94 16.14 4.42 23.06 * 0.012 1.45 0.00 3.42 3.42 4.21 4.42 1.99 16.84 4.79 23.43 * 0.012 1.48 0.00 3.74 3.74 4.56 4.79 2.04 17.54 5.20 23.84 * 0.012 1.51 0.00 4.09 4.09 4.94 5.20 2.10 18.25 5.61 24.25 * 0.012 1.54 0.00 4.44 4.44 5.33 5.61 2.17 18.95 6.04 24.68 * 0.012 1.57 0.00 4.80 4.80 5.74 6.04 2.24 19.65 6.49 25.13 * 0.012 1.60 0.00 5.19 5.19 6.17 6.49 2.30 20.35 6.95 25.59 * 0.012 1.62 0.00 5.59 5.59 6.62 6.95 2.37 21.05 7.45 26.09 * 0.012 1.65 0.00 6.01 6.01 7.09 7.45 2.45 ExBW-2.doc Page 3 of 8 PIPE NO. 7: 106 LF - 24"CP @ 0.08% OUTLET: 18.64 INLET: 18.72 INTYP: 5 JUNC NO. 7: OVERFLOW -EL: 30.97 BEND: 0 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.00 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 15.44 4.59 23.31 * 0.012 1.42 2.00 4.06 4.06 4.40 4.59 1.94 16.14 5.01 23.73 * 0.012 1.45 2.00 4.42 4.42 4.80 5.01 1.99 16.84 5.45 24.17 * 0.012 1.48 2.00 4.79 4.79 5.21 5.45 2.04 17.54 5.91 24.63 * 0.012 1.51 2.00 5.20 5.20 5.66 5.91 2.09 18.25 6.39 25.11 * 0.012 1.54 2.00 5.61 5.61 6.12 6.39 2.17 18.95 6.89 25.61 * 0.012 1.57 2.00 6.04 6.04 6.59 6.89 2.23 19.65 7.40 26.12 * 0.012 1.60 2.00 6.49 6.49 7.09 7.40 2.30 20.35 7.94 26.66 * 0.012 1.62 2.00 6.95 6.95 7.61 7.94 2.37 21.05 8.52 27.24 * 0.012 1.65 2.00 7.45 7.45 8.15 8.52 2.44 PIPE NO. 8: 115 LF - 24"CP @ 0.10% OUTLET: 18.72 INLET: 18.84 INTYP: 5 JUNC NO. 8: OVERFLOW -EL: 31.48 BEND: 11 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.17 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 15.44 5.27 24.11 * 0.012 1.42 2.00 4.59 4.59 4.93 5.27 2.08 16.14 5.76 24.60 * 0.012 1.45 2.00 5.01 5.01 5.39 5.76 2.15 16.84 6.27 25.11 * 0.012 1.48 2.00 5.45 5.45 5.87 6.27 2.21 17.54 6.82 25.66 * 0.012 1.51 2.00 5.91 5.91 6.38 6.82 2.28 18.25 7.38 26.22 * 0.012 1.54 2.00 6.39 6.39 6.91 7.38 2.37 18.95 7.97 26.81 * 0.012 1.57 2.00 6.89 6.89 7.45 7.97 2.45 19.65 8.58 27.42 * 0.012 1.60 2.00 7.40 7.40 8.02 8.58 2.54 20.35 9.21 28.05 * 0.012 1.62 2.00 7.94 7.94 8.62 9.21 2.62 21.05 9.88 28.72 * 0.012 1.65 2.00 8.52 8.52 9.25 9.88 2.71 PIPE NO. 9: 61 LF - 24"CP @ 3.57% OUTLET: 18.90 INLET: 21.08 INTYP: 5 JUNC NO. 9: OVERFLOW -EL: 30.78 BEND: 0 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.00 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 13.20 3.35 24.43 * 0.012 1.31 0.74 5.21 5.21 3.21 3.35 1.75 13.80 3.87 24.95 * 0.012 1.34 0.75 5.70 5.70 3.72 3.87 1.79 14.39 4.41 25.49 * 0.012 1.37 0.77 6.21 6.21 4.24 4.41 1.83 14.99 4.99 26.07 * 0.012 1.40 0.79 6.76 6.76 4.81 4.99 1.87 15.59 5.59 26.67 * 0.012 1.43 0.80 7.32 7.32 5.39 5.59 1.91 16.19 6.21 27.29 * 0.012 1.46 0.82 7.91 7.91 5.99 6.21 1.96 16.79 6.85 27.93 * 0.012 1.48 0.84 8.52 8.52 6.62 6.85 2.00 17.39 7.52 28.60 * 0.012 1.51 0.85 9.15 9.15 7.28 7.52 2.05 17.99 8.23 29.31 * 0.012 1.53 0.87 9.82 9.82 7.97 8.23 2.11 ExBW-2.doc Page 4 of 8 PIPE NO.10: 80 LF - 24"CP @ 0.03% OUTLET: 21.09 INLET: 21.11 INTYP: 5 JUNC NO.10: OVERFLOW -EL: 28.83 BEND: 30 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.15 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 13.20 3.83 24.94 * 0.012 1.31 2.00 3.34 3.34 3.55 3.83 1.91 13.80 4.39 25.50 * 0.012 1.34 2.00 3.86 3.86 4.10 4.39 1.97 14.39 4.98 26.09 * 0.012 1.37 2.00 4.40 4.40 4.66 4.98 2.02 14.99 5.61 26.72 * 0.012 1.40 2.00 4.98 4.98 5.26 5.61 2.08 15.59 6.26 27.37 * 0.012 1.43 2.00 5.58 5.58 5.88 6.26 2.13 16.19 6.94 28.05 * 0.012 1.46 2.00 6.20 6.20 6.53 6.94 2.19 16.79 7.64 28.75 * 0.012 1.48 2.00 6.84 6.84 7.20 7.64 2.25 **************** OVERFLOW ENCOUNTERED AT 17.39 CFS DISCHARGE ***************** ******** OVERFLOW CONDITIONS CALCULATED ASSUMING SURCHARGE CONDITIONS ********* 17.39 8.37 29.48 * 0.012 1.51 2.00 7.51 7.51 7.90 8.37 2.31 17.99 9.14 30.25 * 0.012 1.53 2.00 8.22 8.22 8.63 9.14 2.39 PIPE NO.11: 27 LF - 24"CP @ 0.26% OUTLET: 21.11 INLET: 21.18 INTYP: 5 JUNC NO.11: OVERFLOW -EL: 29.19 BEND: 30 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.00 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 11.47 3.97 25.15 * 0.012 1.22 1.52 3.83 3.83 3.82 3.97 1.69 12.00 4.55 25.73 * 0.012 1.25 1.58 4.39 4.39 4.39 4.55 1.74 12.52 5.16 26.34 * 0.012 1.28 1.65 4.98 4.98 4.98 5.16 1.78 13.04 5.81 26.99 * 0.012 1.30 1.74 5.61 5.61 5.62 5.81 1.82 13.56 6.48 27.66 * 0.012 1.33 2.00 6.26 6.26 6.27 6.48 1.86 14.08 7.18 28.36 * 0.012 1.36 2.00 6.94 6.94 6.96 7.18 1.90 14.60 7.90 29.08 * 0.012 1.38 2.00 7.64 7.64 7.67 7.90 1.94 **************** OVERFLOW ENCOUNTERED AT 15.13 CFS DISCHARGE ***************** ******** OVERFLOW CONDITIONS CALCULATED ASSUMING SURCHARGE CONDITIONS ********* 15.13 8.66 29.84 * 0.012 1.41 2.00 8.37 8.37 8.40 8.66 1.98 15.65 9.45 30.63 * 0.012 1.43 2.00 9.14 9.14 9.18 9.45 2.02 PIPE NO.12: 110 LF - 24"CP @ 0.42% OUTLET: 21.18 INLET: 21.64 INTYP: 5 JUNC NO.12: OVERFLOW -EL: 27.97 BEND: 0 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.00 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 11.47 3.86 25.50 * 0.012 1.22 1.27 3.97 3.97 3.75 3.86 1.65 12.00 4.47 26.11 * 0.012 1.25 1.31 4.55 4.55 4.35 4.47 1.69 12.52 5.12 26.76 * 0.012 1.28 1.35 5.16 5.16 4.99 5.12 1.73 13.04 5.80 27.44 * 0.012 1.30 1.39 5.81 5.81 5.66 5.80 1.77 **************** OVERFLOW ENCOUNTERED AT 13.56 CFS DISCHARGE ***************** ******** OVERFLOW CONDITIONS CALCULATED ASSUMING SURCHARGE CONDITIONS ********* 13.56 6.51 28.15 * 0.012 1.33 1.43 6.48 6.48 6.36 6.51 1.81 14.08 7.24 28.88 * 0.012 1.36 1.47 7.18 7.18 7.08 7.24 1.84 14.60 8.01 29.65 * 0.012 1.38 1.52 7.90 7.90 7.83 8.01 1.88 15.13 8.81 30.45 * 0.012 1.41 1.57 8.66 8.66 8.62 8.81 1.91 15.65 9.64 31.28 * 0.012 1.43 1.62 9.45 9.45 9.44 9.64 1.95 ExBW-2.doc Page 5 of 8 PIPE NO.13: 178 LF - 24"CP @ 0.15% OUTLET: 21.64 INLET: 21.90 INTYP: 5 JUNC NO.13: OVERFLOW -EL: 26.76 BEND: 0 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.15 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 11.47 4.16 26.06 * 0.012 1.22 2.00 3.86 3.86 3.99 4.16 1.72 12.00 4.83 26.73 * 0.012 1.25 2.00 4.47 4.47 4.64 4.83 1.77 **************** OVERFLOW ENCOUNTERED AT 12.52 CFS DISCHARGE ***************** ******** OVERFLOW CONDITIONS CALCULATED ASSUMING SURCHARGE CONDITIONS ********* 12.52 5.53 27.43 * 0.012 1.28 2.00 5.12 5.12 5.32 5.53 1.81 13.04 6.27 28.17 * 0.012 1.30 2.00 5.80 5.80 6.04 6.27 1.86 13.56 7.04 28.94 * 0.012 1.33 2.00 6.51 6.51 6.79 7.04 1.90 14.08 7.84 29.74 * 0.012 1.36 2.00 7.24 7.24 7.57 7.84 1.95 14.60 8.67 30.57 * 0.012 1.38 2.00 8.01 8.01 8.38 8.67 1.99 15.13 9.53 31.43 * 0.012 1.41 2.00 8.81 8.81 9.22 9.53 2.04 15.65 10.43 32.33 * 0.012 1.43 2.00 9.64 9.64 10.11 10.43 2.08 PIPE NO.14: 78 LF - 24"CP @ 0.06% OUTLET: 21.90 INLET: 21.95 INTYP: 5 JUNC NO.14: OVERFLOW -EL: 26.62 BEND: 0 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.00 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 9.98 4.32 26.27 * 0.012 1.14 2.00 4.16 4.16 4.24 4.32 1.54 **************** OVERFLOW ENCOUNTERED AT 10.43 CFS DISCHARGE ***************** ******** OVERFLOW CONDITIONS CALCULATED ASSUMING SURCHARGE CONDITIONS ********* 10.43 5.01 26.96 * 0.012 1.16 2.00 4.83 4.83 4.92 5.01 1.57 10.88 5.73 27.68 * 0.012 1.19 2.00 5.53 5.53 5.63 5.73 1.61 11.34 6.49 28.44 * 0.012 1.21 2.00 6.27 6.27 6.39 6.49 1.64 11.79 7.28 29.23 * 0.012 1.24 2.00 7.04 7.04 7.17 7.28 1.68 12.25 8.10 30.05 * 0.012 1.26 2.00 7.84 7.84 7.98 8.10 1.71 12.70 8.96 30.91 * 0.012 1.29 2.00 8.67 8.67 8.83 8.96 1.75 13.15 9.85 31.80 * 0.012 1.31 2.00 9.53 9.53 9.70 9.85 1.78 13.61 10.78 32.73 * 0.012 1.33 2.00 10.43 10.43 10.63 10.78 1.81 PIPE NO.15: 77 LF - 24"CP @ 0.25% OUTLET: 21.95 INLET: 22.14 INTYP: 5 JUNC NO.15: OVERFLOW -EL: 27.29 BEND: 0 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.00 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 9.98 4.35 26.49 * 0.012 1.14 1.38 4.32 4.32 4.27 4.35 1.53 10.43 5.05 27.19 * 0.012 1.16 1.43 5.01 5.01 4.96 5.05 1.57 **************** OVERFLOW ENCOUNTERED AT 10.88 CFS DISCHARGE ***************** ******** OVERFLOW CONDITIONS CALCULATED ASSUMING SURCHARGE CONDITIONS ********* 10.88 5.79 27.93 * 0.012 1.19 1.48 5.73 5.73 5.69 5.79 1.61 11.34 6.57 28.71 * 0.012 1.21 1.53 6.49 6.49 6.47 6.57 1.64 11.79 7.38 29.52 * 0.012 1.24 1.59 7.28 7.28 7.27 7.38 1.68 12.25 8.23 30.37 * 0.012 1.26 1.66 8.10 8.10 8.11 8.23 1.71 12.70 9.11 31.25 * 0.012 1.29 1.73 8.96 8.96 8.97 9.11 1.74 13.15 10.02 32.16 * 0.012 1.31 2.00 9.85 9.85 9.88 10.02 1.78 13.61 10.98 33.12 * 0.012 1.33 2.00 10.78 10.78 10.82 10.98 1.81 EXBW-2.dOc Page 6 of 8 PIPE NO.16: 75 LF - 24"CP @ 0.00% OUTLET: 22.14 INLET: 22.14 INTYP: 5 JUNC NO.16: OVERFLOW -EL: 27.87 BEND: 0 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.00 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 9.98 4.56 26.70 * 0.012 1.14 0.00 4.35 4.35 4.48 4.56 1.54 10.43 5.27 27.41 * 0.012 1.16 0.00 5.05 5.05 5.18 5.27 1.57 **************** OVERFLOW ENCOUNTERED AT 10.88 CFS DISCHARGE ***************** ******** OVERFLOW CONDITIONS CALCULATED ASSUMING SURCHARGE CONDITIONS ********* 10.88 6.03 28.17 * 0.012 1.19 0.00 5.79 5.79 5.94 6.03 1.61 11.34 6.84 28.98 * 0.012 1.21 0.00 6.57 6'.57 6.73 6.84 1.65 11.79 7.67 29.81 * 0.012 1.24 0.00 7.38 7.38 7.56 7.67 1.68 12.25 8.54 30.68 * 0.012 1.26 0.00 8.23 8.23 8.42 8.54 1.71 12.70 9.44 31.58 * 0.012 1.29 0.00 9.11 9.11 9.31 9.44 1.75 13.15 10.38 32.52 * 0.012 1.31 0.00 10.02 10.02 10.24 10.38 1.78 13.61 11.36 33.50 * 0.012 1.33 0.00 10.98 10.98 11.21 11.36 1.81 PIPE NO.17: 86 LF - 24"CP @ 0.23% OUTLET: 22.14 INLET: 22.34 INTYP: 5 JUNC NO.17: OVERFLOW -EL: 27.51 BEND: 5 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.51 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 9.98 4.69 27.03 * 0.012 1.14 1.41 4.56 4.56 4.50 4.69 1.65 **************** OVERFLOW ENCOUNTERED AT 10.43 CFS DISCHARGE ***************** ******** OVERFLOW CONDITIONS CALCULATED ASSUMING SURCHARGE CONDITIONS ********* 10.43 5.44 27.78 * 0.012 1.16 1.46 5.27 5.27 5.23 5.44 1.69 10.88 6.23 28.57 * 0.012 1.19 1.52 6.03 6.03 6.00 6.23 1.74 11.34 7.07 29.41 * 0.012 1.21 1.58 6.84 6.84 6.82 7.07 1.79 11.79 7.94 30.28 * 0.012 1.24 1.64 7.67 7.67 7.67 7.94 1.83 12.25 8.84 31.18 * 0.012 1.26 1.72 8.54 8.54 8.55 8.84 1.88 12.70 9.78 32.12 * 0.012 1.29 1.86 9.44 9.44 9.47 9.78 1.92 13.15 10.76 33.10 * 0.012 1.31 2.00 10.38 10.38 10.42 10.76 1.97 13.61 11.78 34.12 * 0.012 1.33 2.00 11.36 11.36 11.42 11.78 2.02 PIPE NO.18: 145 LF - 24"CP @ 0.21% OUTLET: 22.34 INLET: 22.64 INTYP: 5 JUNC NO.18: OVERFLOW -EL: 28.16 BEND: 0 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.00 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 6.61 4.54 27.18 * 0.012 0.92 1.11 4.69 4.69 4.50 4.54 1.23 6.91 5.29 27.93 * 0.012 0.94 1.14 5.44 5.44 5.25 5.29 1.26 **************** OVERFLOW ENCOUNTERED AT 7.21 CFS DISCHARGE ***************** ******** OVERFLOW CONDITIONS CALCULATED ASSUMING SURCHARGE CONDITIONS ********* 7.21 6.10 28.74 * 0.012 0.96 1.18 6.23 6.23 6.06 6.10 1.29 7.51 6.95 29.59 * 0.012 0.98 1.21 7.07 7.07 6.91 6.95 1.32 7.81 7.84 30.48 * 0.012 1.00 1.24 7.94 7.94 7.79 7.84 1.35 8.11 8.76 31.40 * 0.012 1.02 1.27 8.84 8.84 8.70 8.76 1.38 8.41 9.71 32.35 * 0.012 1.04 1.30 9.78 9.78 9.65 9.71 1.40 8.71 10.70 33.34 * 0.012 1.06 1.34 10.76 10.76 10.64 10.70 1.43 9.01 11.74 34.38 * 0.012 1.08 1.37 11.78 11.78 11.68 11.74 1.45 ExBW-2.doc Page 7 of 8 0 PIPE NO.19: 123 LF - 24"CP @ 0.33% OUTLET: 22.64 INLET: 23.05 INTYP: 5 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 6.61 4.32 27.37 * 0.012 0.92 0.97 4.54 4.54 4.22 4.32 1.30 6.91 5.09 28.14 * 0.012 0.94 0.99 5.29 5.29 4.98 5.09 1.34 **************** OVERFLOW ENCOUNTERED AT 7.21 CFS DISCHARGE ***************** 7.21 5.92 28.97 * 0.012 0.96 1.02 6.10 6.10 5.80 5.92 1.37 7.51 6.79 29.84 * 0.012 0.98 1.04 6.95 6.95 6.66 6.79 1.41 7.81 7.70 30.75 * 0.012 1.00 1.07 7.84 7.84 7.55 7.70 1.44 8.11 8.63 31.68 * 0.012 1.02 1.09 8.76 8.76 8.48 8.63 1.48 8.41 9.61 32.66 * 0.012 1.04 1.12 9.71 9.71 9.45 9.61 1.51 8.71 10.63 33.68 * 0.012 1.06 1.14 10.70 10.70 10.45 10.63 1.54 9.01 11.69 34.74 * 0.012 1.08 1.16 11.74 11.74 11.50 11.69 1.58 Exit KCBW Program .:Vlk•l r' KING COUNTY DEPARTMENT OF NATURAL RESOURCES Water and Land Resources Division BACKWATER ANALYSIS PROGRAM Version 6.00 Page 8 of 8 Ex. �IM EIe�r%JnS Ga or r-r,o;.,2 13 2 4jr3, 1+ (S.7ob : CH��Avx � 2 V. C� ( (C6�7 J`D �GSyJ 150AAIAJAK �� � wtr z 145A 140A , 10 1.38A wCSf� IN 136A 135A_AH — 2(T7P{ �, eG✓ 13 130A 2 . 9 T//" f 2q,1� n 125A i OA 2 0.83 115A_AF, V 6 10A 3 Lo-+-, N w 105A /1 fo N w w a l y �r p ra,'"47 5A_Z,AA,Y 78A 79A 95A_AE', 100A Qo� 3 0. 2 -� > . 30A_ABACAP 3 o I (���c (a 3o.q 3ro-1.LI NcL, 36". KuP e",. S, nr SWP-27-3529 Lake Ave S / Rainier Ave S Storm Project 5/20/10 Prelim Future Storm System Backwater Analysis D.Carey KING COUNTY DEPARTMENT OF NATURAL RESOURCES 411 P�nCJ o " Water and Land Resources Division BACKWATER ANALYSIS PROGRAM Version 6.00 �k z 5-1, �. File Opened for Reading:Fut-30pipel.bwp New 36-inch pipes from Rainier Ave to SPU Crossing: Crossing stays as 24-inch. 36-INCH REVIEW OF THE PIPE -DATA G&O PI OUTLET INLET IN Node # LENGTH DI TY ELEV ELEV TY KE K M C Y 79 1 154.00 36 4 17.26 17.47 8 .50 .0083 2.0 .0496 .57 80 2 38.00 36 4 17.37 17.09 8 .50 .0083 2.0 .0496 .57 95 3 200.00120 1 17.50 18.19 5 .50 .0098 2.0 .0398 .67 �i 100 4 42.00 36 1 18.19 18.47 5 .50 .0098 2.0 .0398 .67 0,11J3611 ,� 3 6 105 5 215.00 36 1 18.47 19.00 5 .50 .0098 2.0 .0398 .67 106 6 97.00 36 1 19.00 18.64 5 .50 .0098 2.0 .0398 .67 107 7 106.00 36 1 18.64 18.72 5 .50 .0098 2.0 .0398 .67 5Pu 110 8 115.00 36 1 18.72 18.84 5 .50 .0098 2.0 .0398 .67 115 9 61.00 24 1 18.90 21.08 5 .50 .0098 2.0 .0398 .67 Slcilsn 120 10 80.00 24 1 21.09 21.11 5 .50 .0098 2.0 .0398 .67 125 11 27.00 24 1 21.11 21.18 5 .50 .0098 2.0 .0398 .67 130 12 110.00 24 1 21.18 21.64 5 .50 .0098 2.0 .0398 .67 135 13 178.00 24 1 21.64 21.90 5 .50 .0098 2.0 .0398 .67 136 14 78.00 24 1 21.90 21.95 5 .50 .0098 2.0 .0398 .67 137 15 77.00 24 1 21.95 22.14 5 .50 .0098 2.0 .0398 .67 138 16 7.5.00 24 1 22.14 22.14 5 .50 .0098 2.0 .0398 .67 140 17 86.00 24 1 22.14 22.34 5 .50 .0098 2.0 .0398 .67 145 18 145.00 24 1 22.34 22.64 5 .50 .0098 2.0 .0398 .67 150 19 123.00 24 1 22.64 23.05 5 .50 .0098 2.0 .0398 .67 File Opened for Reading:Alt2-36-SPU24.bwp File Opened for Reading:ExTW1.bwt HW/TW Data File:ExTW1.bwt Stage(ft) Discharge(cfs) 1.1 10.00 1.4 15.00 1.7 20.00 2.6 35.00 Zero Stage Elevation:17.09 feet BACKWATER COMPUTER PROGRAM FOR PIPES Pipe data from file:Alt2-36-SPU24.bwp Surcharge condition at intermediate junctions Tailwater from HW/TW File:EXTW1.bwt Discharge Range:24. to 34. Step of 1. [cfs] Overflow Elevation:28.81 feet Weir:NONE Upstream Velocity:0.1 feet/sec O v(rJ10W, OVERFLO BND STRU Q ELEV ANG WIDE RAT 30.17 0 5.0 0.00 30.57 45 5.0 0.25 30.25 10 10.0 0.14 30.27 0 4.0 0.00 27.56 40 4.0 0.00 29.39 0 4.0 0.00 30.97 0 4.0 0.00 31.48 11 4.0 0.17 30.78 0 4.0 0.00 28.83 30 4.0 0.15 29.19 30 4.0 0.00 27.97 0 4.0 0.00 - ° k 26.76 0 4.0 0.15 -- 6vt/ 7 257t 26.62 0 4.0 0.00 - Ovtr 14.1 725 27.29 0 4.0 0.00 - 1q.I :, 27.87 0 4.0 0.00 - 1Li.1 it 27.51 5 4.0 0.51 - 13,1 tit-r 25yr 28.16 0 4.0 0.00 _ cl o 7 25y, 1, 3 )-25 Alt2-36-SPU24.doc Page 1 of 8 l Prelim Future Conditions Analysis - New pipes from box culvert to south edge of SPU lines to 36". Storm line crossing SPU stays at 24-inch. Design flow for Existing Conditions: from G&O Feb. 2003 Pre -Design Analysis Report At Node 79A: Q 2 year = 19.6 cfs, Q 10 yr = 23.5 cfs, Q 25yr = 27.8 cfs ( 1,,, -- 3 o, 6 C�f 1st iteration, 5th iteration ti Fp�i 2 s (i 4' 7 %f ✓A �0 a PIPE NO. 1: 154 LF-43"X27"CMAP @ 0.14% OUTLET: 17.26 INLET: 17.47 INTYP: 8 JUNC NO. 1: OVERFLOW -EL: 30.17 BEND: 0 DEG DIA/WIDTH: 5.0 Q-RATIO: 0.00 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 24.00 2.89 20.36 * 0.024 1.47 2.25 1.77 1.77 2.60 2.89 1.95 25.00 3.03 20.50 * 0.024 1.51 2.25 1.83 1.83 2.71 3.03 2.02 26.00 3.17 20.64 * 0.024 1.55 2.25 1.89 1.89 2.82 3.17 2.08 27.00 3.32 20.79 * 0.024 1.59 2.25 1.95 1.95 2.94 3.32 2.14 28.00 3.47 20.94 * 0.024 1.63 2.25 2.01 2.01 3.06 3.47 2.21 29.00 3.64 21.11 * 0.024 1.68 2.25 2.07 2.07 3.19 3.64 2.28 30.00 3.82 21.29 * 0.024 1.72 2.25 2.13 2.13 3.34 3.82 2.34 31..00 4.03 21.50 * 0.024 1.76 2.25 2.19 2.19 3.51 4.03 2.41 32.00 4.32 21.79 * 0.024 1.80 2.25 2.25 2.25 3.76 4.32 2.48 33.00 4.52 21.99 * 0.024 1.84 2.25 2.31 2.31 3.93 4.52 2.55 34.00 4.73 22.20 * 0.024 1.89 2.25 2.37 2.37 4.10 4.73 2.64 PIPE NO. 2: 38 LF-43"X27"CMAP @-0.74% OUTLET: 17.37 INLET: 17.09 INTYP: 8 JUNC NO. 2: OVERFLOW -EL: 30.57 BEND: 45 DEG DIA/WIDTH: 5.0 Q-RATIO: 0.25 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 24.00 3.84 20.93 * 0.024 1.47 0.00 2.99 2.99 3.51 3.84 2.00 25.00 4.03 21.12 * 0.024 1.51 0.00 3.13 3.13 3.67 4.03 2.07 26.00 4.22 21.31 * 0.024 1.55 0.00 3.27 3.27 3.83 4.22 2.13 27.00 4.42 21.51 * 0.024 1.59 0.00 3.42 3.42 4.00 4.42 2.19 28.00 4.63 21.72 * 0.024 1.63 0.00 3.57 3.57 4.18 4.63 2.26 29.00 4.85 21.94 * 0.024 1.68 0.00 3.74 3.74 4.36 4.85 2.33 30.00 5.09 22.18 * 0.024 1.72 0.00 3.92 3.92 4.57 5.09 2.39 31.00 5.36 22.45 * 0.024 1.76 0.00 4.13 4.13 4.80 5.36 2.46 32.00 5.71 22.80 * 0.024 1.80 0.00 4.42 4.42 5.12 5.71 2.52 33.00 5.98 23.07 * 0.024 1.84 0.00 4.62 4.62 5.35 5.98 2.59 34.00 6.25 23.34 * 0.024 1.89 0.00 4.83 4.83 5.59 6.25 2.69 AIt2-36-SPU24.doc Page 2 of 8 PIPE NO. 3: 200 LF - **"CP @ 0.35% OUTLET: 17.50 INLET: 18.19 INTYP: 5 JUNC NO. 3: OVERFLOW -EL: 30.25 BEND: 10 DEG DIA/WIDTH:10.0 Q-RATIO: 0.14 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 19.20 2.74 20.93 * 0.012 1.01 0.94 3.43 3.43 2.74 2.69 1.25 20.00 2.93 21.12 * 0.012 1.03 0.96 3.62 3.62 2.93 2.87 1.27 20.80 3.12 21.31 * 0.012 1.05 0.98 3.81 3.81 3.12 3.06 1.30 21.60 3.32 21.51 * 0.012 1.07 1.00 4.01 4.01 3.32 3.25 1.32 22.40 3.53 21.72 * 0.012 1.09 1.01 4.22 4.22 3.53 3.45 1.34 23.20 3.75 21.94 * 0.012 1.11 1.03 4.44 4.44 3.75 3.66 1.35 24.00 3.99 22.18 * 0.012 1.13 1.05 4.68 4.68 3.99 3.89 1.37 24.80 4.26 22.45 * 0.012 1.15 1.06 4.95 4.95 4.26 4.15 1.39 25.60 4.61 22.80 * 0.012 1.16 1.08 5.30 5.30 4.61 4.49 1.41 26.40 4.88 23.07 * 0.012 1.18 1.10 5.57 5.57 4.88 4.75 1.42 27.20 5.16 23.35 * 0.012 1.20 1.11 5.84 5.84 5.16 5.02 1.44 PIPE NO. 4: 42 LF - 36"CP @ 0.67% OUTLET: 18.19 INLET: 18.47 INTYP: 5 JUNC NO. 4: OVERFLOW -EL: 30.27 BEND: 0 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.00 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 16.84 2.55 21.02 * 0.012 1.32 1.10 2.74 2.74 2.47 2.55 1.77 17.54 2.74 21.21 * 0.012 1.35 1.13 2.93 2.93 2.67 2.74 1.81 18.25 2.93 21.40 * 0.012 1.37 1.15 3.12 3.12 2.87 2.93 1.85 18.95 3.13 21.60 * 0.012 1.40 1.17 3.32 3.32 3.07 3.13 1.88 19.65 3.34 21.81 * 0.012 1.43 1.20 3.53 3.53 3.28 3.34 1.92 20.35 3.57 22.04 * 0.012 1.45 1.22 3.75 3.75 3.50 3.57 1.96 21.05 3.82 22.29 * 0.012 1.48 1.24 3.99 3.99 3.75 3.82 1.99 21.75 4.09 22.56 * 0.012 1.50 1.27 4.26 4.26 4.02 4.09 2.03 22.46 4.45 22.92 * 0.012 1.53 1.29 4.61 4.61 4.37 4.45 2.06 23.16 4.73 23.20 * 0.012 1.55 1.31 4.88 4.88 4.64 4.73 2.10 23.86 5.02 23.49 * 0.012 1.58 1.33 5.16 5.16 4.93 5.02 2.13 PIPE NO. 5: 215 LF - 36"CP @ 0.25% OUTLET: 18.47 INLET: 19.00 INTYP: 5 JUNC NO. 5: OVERFLOW -EL: 27.56 BEND: 40 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.00 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 16.84 2.29 21.29 * 0.012 1.32 1.45 2.55 2.55 2.12 2.29 1.80 17.54 2.45 21.45 * 0.012 1.35 1.49 2.74 2.74 2.30 2.45 1.84 18.25 2.63 21.63 * 0.012 1.37 1.52 2.93 2.93 2.51 2.63 1.88 18.95 2.84 21.84 * 0.012 1.40 1.55 3.13 3.13 2.73 2.84 1.92 19.65 3.07 22.07 * 0.012 1.43 1.59 3.34 3.34 2.97 3.07 1.96 20.35 3.33 22.33 * 0.012 1.45 1.62 3.57 3.57 3.22 3.33 2.00 21.05 3.58 22.58 * 0.012 1.48 1.66 3.82 3.82 3.47 3.58 2.04 21.75 3.88 22.88 * 0.012 1.50 1.69 4.09 4.09 3.76 3.88 2.08 22.46 4.26 23.26 * 0.012 1.53 1.72 4.45 4.45 4.13 4.26 2.12 23.16 4.56 23.56 * 0.012 1.55 1.76 4.73 4.73 4.42 4.56 2.15 23.86 4.87 23.87 * 0.012 1.58 1.79 5.02 5.02 4.72 4.87 2.19 AIt2-36-SPU24.doc Page 3 of 8 PIPE NO. 6: 97 LF - 36"CP @ -0.37% OUTLET: 19.00 INLET: 18.64 INTYP: 5 JUNC NO. 6: OVERFLOW -EL: 29.39 BEND: 0 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.00 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 16.84 2.80 21.44 * 0.012 1.32 0.00 2.29 2.29 2.74 2.80 1.79 17.54 2.95 21.59 * 0.012 1.35 0.00 2.45 2.45 2.90 2.95 1.82 18.25 3.13 21.77 * 0.012 1.37 0.00 2.63 2.63 3.07 3.13 1.86 18.95 3.33 21.97 * 0.012 1.40 0.00 2.84 2.84 3.27 3.33 1.90 19.65 3.56 22.20 * 0.012 1.43 0.00 3.07 3.07 3.50 3.56 1.94 20.35 3.83 22.47 * 0.012 1.45 0.00 3.33 3.33 3.76 3.83 1.97 21.05 4.10 22.74 * 0.012 1.48 0.00 3.58 3.58 4.03 4.10 2.01 21.75 4.40 23.04 * 0.012 1.50 0.00 3.88 3.88 4.33 4.40 2.04 22.46 4.79 23.43 * 0.012 1.53 0.00 4.26 4.26 4.71 4.79 2.08 23.16 5.10 23.74 * 0.012 1.55 0.00 4.56 4.56 5.02 5.10 2.11 23.86 5.43 24.07 * 0.012 1.58 0.00 4.87 4.87 5.33 5.43 2.14 PIPE NO. 7: 106 LF - 36"CP @ 0.08% OUTLET: 18.64 INLET: 18.72 INTYP: 5 JUNC NO. 7: OVERFLOW -EL: 30.97 BEND: 0 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.00 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 16.84 2.83 21.55 * 0.012 1.32 2.13 2.80 2.80 2.77 2.83 1.78 17.54 2.98 21.70 * 0.012 1.35 2.20 2.95 2.95 2.93 2.98 1.82 18.25 3.17 21.89 * 0.012 1.37 2.27 3.13 3.13 3.12 3.17 1.86 18.95 3.38 22.10 * 0.012 1.40 2.35 3.33 3.33 3.32 3.38 1.89 19.65 3.62 22.34 * 0.012 1.43 2.44 3.56 3.56 3.56 3.62 1.93 20.35 3.90 22.62 * 0.012 1.45 2.54 3.83 3.83 3.83 3.90 1.97 21.05 4.18 22.90 * 0.012 1.48 2.68 4.10 4.10 4.11 4.18 2.00 21.75 4.50 23.22 * 0.012 1.50 3.00 4.40 4.40 4.42 4.50 2.04 22.46 4.90 23.62 * 0.012 1.53 3.00 4.79 4.79 4.82 4.90 2.07 23.16 5.22 23.94 * 0.012 1.55 3.00 5.10 5.10 5.13 5.22 2.10 23.86 5.55 24.27 * 0.012. 1.58 3.00 5.43 5.43 5.46 5.55 2.14 PIPE NO. 8: 115 LF - 36"CP @ 0.10% OUTLET: 18.72 INLET: 18.84 INTYP: 5 JUNC NO. 8: OVERFLOW -EL: 31.48 BEND: 11 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.17 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 16.84 2.76 21.60 * 0.012 1.32 1.89 2.83 2.83 2.76 2.64 1.60 17.54 2.93 21.77 * 0.012 1.35 1.95 2.98 2.98 2.93 2.79 1.62 18.25 3.13 21.97 * 0.012 1.37 2.00 3.17 3.17 3.13 2.97 1.65 18.95 3.34 22.18 * 0.012 1.40 2.06 3.38 3.38 3.34 3.17 1.67 19.65 3.59 22.43 * 0.012 1.43 2.11 3.62 3.62 3.59 3.41 1.69 20.35 3.87 22.71 * 0.012 1.45 2.17 3.90 3.90 3.87 3.68 1.70 21.05 4.16 23.00 * 0.012 1.48 2.23 4.18 4.18 4.16 3.95 1.72 21.75 4.48 23.32 * 0.012 1.50 2.30 4.50 4.50 4.48 4.26 1.74 22.46 4.89 23.73 * 0.012 1.53 2.37 4.90 4.90 4.89 4.65 1.75 23.16 5.22 24.06 * 0.012 1.55 2.44 5.22 5.22 5.22 4.97 1.77 23.86 5.56 24.40 * 0.012 1.58 2.53 5.55 5.55 5.56 5.29 1.78 AIt2-36-SPU24.doc Page 4 of 8 �0* N ) G� a��c ;�� ?iOt Sl 16 PIPE NO. 9: 61 LF - 24"CP @ 3.57% OUTLET: 18.90 INLET: 21.08 INTYP: 5 JUNC NO. 9: OVERFLOW -EL: 30.78 BEND: 0 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.00 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI 14.39 1.83 22.91 * 0.012 1.37 0.77 2.70 2.70 1.37 ***** 1.83 14.99 1.87 22.95 * 0.012 1.40 0.79 2.87 2.87 1.40 ***** 1.87 15.59 1.91 22.99 * 0.012 1.43 0.80 3.07 3.07 1.43 ***** 1.91 16.19 1.96 23.04 * 0.012 1.46 0.82 3.28 3.28 1.46 ***** 1.96 16.79 2.00 23.08 * 0.012 1.48 0.84 3.53 3.53 1.48 ***** 2.00 17.39 2.05 23.13 * 0.012 1.51 0.85 3.81 3.81 1.51 ***** 2.05 17.99 2.11 23.19 * 0.012 1.53 0.87 4.10 4.10 1.53 ***** 2.11 18.59 2.88 23.96 * 0.012 1.56 0.89 4.42 4.42 2.60 2.88 2.16 19.19 3.32 24.40 * 0.012 1.58 0.90 4.83 4.83 3.02 3.32 2.22 19.79 3.70 24.78 * 0.012 1.60 0.92 5.16 5.16 3.38 3.70 2.28 20.39 4.08 25.16 * 0.012 1.63 0.93 5.50 5.50 3.74 4.08 2.34 PIPE NO.10: 80 LF - 24"CP @ 0.03% OUTLET: 21.09 INLET: 21.11 INTYP: 5 JUNC NO.10: OVERFLOW -EL: 28.83 BEND: 30 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.15 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 14.39 2.42 23.53 * 0.012 1.37 2.00 1.82 1.82 2.10 2.42 2.02 14.99 2.50 23.61 * 0.012 1.40 2.00 1.86 1.86 2.15 2.50 2.08 15.59 2.58 23.69 * 0.012 1.43 2.00 1.90 1.90 2.20 2.58 2.13 16.19 2.68 23.79 * 0.012 1.46 2.00 1.95 1.95 2.27 2.68 2.19 16.79 2.78 23.89 * 0.012 1.48 2.00 1.99 1.99 2.34 2.78 2.25 17.39 2.89 24.00 * 0.012 1.51 2.00 2.04 2.04 2.42 2.89 2.31 17.99 3.02 24.13 * 0.012 1.53 2.00 2.10 2.10 2.51 3.02 2.39 18.59 3.85 24.96 * 0.012 1.56 2.00 2.87 2.87 3.31 3.85 2.46 19.19 4.36 25.47 * 0.012 1.58 2.00 3.31 3.31 3.79 4.36 2.53 19.79 4.80 25.91 * 0.012 1.60 2.00 3.69 3.69 4.19 4.80 2.61 20.39 5.26 26.37 * 0.012 1.63 2.00 4.07 4.07 4.61 5.26 2.68 PIPE NO.11: 27 LF - 24"CP @ 0.26% OUTLET: 21.11 INLET: 21.18 INTYP: 5 JUNC NO.11: OVERFLOW -EL: 29.19 BEND: 30 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.00 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 12.52 2.60 23.78 * 0.012 1.28 1.65 2.42 2.42 2.42 2.60 1.78 13.04 2.70 23.88 * 0.012 1.30 1.74 2.50 2.50 2.51 2.70 1.82 13.56 2.80 23.98 * 0.012 1.33 2.00 2.58 2.58 2.59 2.80 1.86 14.08 2.92 24.10 * 0.012 1.36 2.00 2.68 2.68 2.70 2.92 1.90 14.60 3.04 24.22 * 0.012 1.38 2.00 2.78 2.78 2.81 3.04 1.94 15.13 3.18 24.36 * 0.012 1.41 2.00 2.89 2.89 2.92 3.18 1.98 15.65 3.33 24.51 * 0.012 1.43 2.00 3.02 3.02 3.06 3.33 2.02 16.17 4.19 25.37 * 0.012 1.46 2.00 3.85 3.85 3.90 4.19 2.07 16.69 4.73 25.91 * 0.012 1.48 2.00 4.36 4.36 4.42 4.73 2.11 17.21 5.20 26.38 * 0.012 1.50 2.00 4.80 4.80 4.86 5.20 2.15 17.73 5.68 26.86 * 0.012 1.52 2.00 5.26 5.26 5.33 5.68 2.20 AIt2-36-SPU24.doc Page 5 of 8 PIPE NO.12: 110 LF - 24"CP @ 0.42% OUTLET: 21.18 INLET: 21.64 INTYP: 5 JUNC NO.12: OVERFLOW -EL: 27.97 BEND: 0 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.00 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 12.52 2.56 24.20 * 0.012 1.28 1.35 2.60 2.60 2.43 2.56 1.73 13.04 2.69 24.33 * 0.012 1.30 1.39 2.70 2.70 2.55 2.69 1.77 13.56 2.83 24.47 * 0.012 1.33 1.43 2.80 2.80 2.68 2.83 1.81 14.08 2.99 24.63 * 0.012 1.36 1.47 2.92 2.92 2.82 2.99 1.84 14.60 3.15 24.79 * 0.012 1.38 1.52 3.04 3.04 2.98 3.15 1.88 15.13 3.33 24.97 * 0.012 1.41 1.57 3.18 3.18 3.14 3.33 1.91 15.65 3.52 25.16 * 0.012 1.43 1.62 3.33 3.33 3.32 3.52 1.95 16.17 4.43 26.07 * 0.012 1.46 1.68 4.19 4.19 4.21 4.43 1.99 16.69 5.01 26.65 * 0.012 1.48 1.76 4.73 4.73 4.78 5.01 2.02 17.21 5.52 27.16 * 0.012 1.50 2.00 5.20 5.20 5.28 5.52 2.06 17.73 6.05 27.69 * 0.012 1.52 2.00 5.68 5.68 5.79 6.05 2.10 PIPE NO.13: 178 LF - 24"CP @ 0.15% OUTLET: 21.64 INLET: 21.90 INTYP: 5 JUNC NO.13: OVERFLOW -EL: 26.76 BEND: 0 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.15 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 12.52 2.97 24.87 * 0.012 1.28 2.00 2.56 2.56 2.76 2.97 1.81 13.04 3.16 25.06 * 0.012 1.30 2.00 2.69 2.69 2.93 3.16 1.86 13.56 3.36 25.26 * 0.012 1.33 2.00 2.83 2.83 3.11 3.36 1.90 14.08 3.58 25.48 * 0.012 1.36 2.00 2.99 2.99 3.31 3.58 1.95 14.60 3.81 25.71 * 0.012 1.38 2.00 3.15 3.15 3.52 3.81 1.99 15.13 4.05 25.95 * 0.012 1.41 2.00 3.33 3.33 3.74 4.05 2.04 15.65 4.31 26.21 * 0.012 1.43 2.00 3.52 3.52 3.99 4.31 2.08 **************** OVERFLOW ENCOUNTERED AT 16.17 CFS DISCHARGE ***************** ******** OVERFLOW CONDITIONS CALCULATED ASSUMING SURCHARGE CONDITIONS ********* 16.17 5.29 27.19 * 0.012 1.46 2.00 4.43 4.43 4.94 5.29 2.12 16.69 5.94 27.84 * 0.012 1.48 2.00 5.01 5.01 5.57 5.94 2.17 17.21 6.53 28.43 * 0.012 1.50 2.00 5.52 5.52 6.14 6.53 2.22 17.73 7.14 29.04 * 0.012 1.52 2.00 6.05 6.05 6.72 7.14 2.27 PIPE NO.14: 78 LF - 24"CP @ 0.06% OUTLET: 21.90 INLET: 21.95 INTYP: 5 JUNC NO.14: OVERFLOW -EL: 26.62 BEND: 0 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.00 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 10.88 3.17 25.12 * 0.012 1.19 2.00 2.97 2.97 3.08 3.17 1.61 11.34 3.38 25.33 * 0.012 1.21 2.00 3.16 3.16 3.28 3.38 1.64 11.79 3.60 25.55 * 0.012 1.24 2.00 3.36 3.36 3.49 3.60 1.68 12.25 3.85 25.80 * 0.012 1.26 2.00 3.58 3.58 3.72 3.85 1.71 12.70 4.10 26.05 * 0.012 1.29 2.00 3.81 3.81 3.97 4.10 1.75 13.15 4.37 26.32 * 0.012 1.31 2.00 4.05 4.05 4.22 4.37 1.78 13.61 4.65 26.60 * 0.012 1.33 2.00 4.31 4.31 4.50 4.65 1.81 **************** OVERFLOW ENCOUNTERED AT 14.06 CFS DISCHARGE ***************** ******** OVERFLOW CONDITIONS CALCULATED ASSUMING SURCHARGE CONDITIONS ********* 14.06 5.66 27.61 * 0.012 1:36 2.00 5.29 5.29 5.50 5.66 1.84 14.51 6.34 28.29 * 0.012 1.38 2.00 5.94 5.94 6.17 6.34 1.88 14.97 6.96 28.91 * 0.012 1.40 2.00 6.53 6.53 6.77 6.96 1.91 15.42 7.60 29.55 * 0.012 1.42 2.00 7.14 7.14 7.40 7.60 1.94 AIt2-36-SPU24.doc Page 6 of 8 PIPE NO.15: 77 LF - 24"CP @ 0.25% OUTLET: 21.95 INLET: 22.14 INTYP: 5 JUNC NO.15: OVERFLOW -EL: 27.29 BEND: 0 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.00 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 10.88 3.24 25.38 * 0.012 1.19 1.48 3.17 3.17 3.14 3.24 1.61 11.34 3.46 25.60 * 0.012 1.21 1.53 3.38 3.38 3.36 3.46 1.64 11.79 3.70 25.84 * 0.012 1.24 1.59 3.60 3.60 3.59 3.70 1.68 12.25 3.97 26.11 * 0.012 1.26 1.66 3.85 3.85 3.85 3.97 1.71 12.70 4.25 26.39 * 0.012 1.29 1.73 4.10 4.10 4.12 4.25 1.74 13.15 4.54 26.68 * 0.012 1.31 2.00 4.37 4.37 4.40 4.54 1.78 13.61 4.85 26.99 * 0.012 1.33 2.00 4.65 4.65 4.70 4.85 1.81 **************** OVERFLOW ENCOUNTERED AT 14.06 CFS DISCHARGE ***************** ******** OVERFLOW CONDITIONS CALCULATED ASSUMING SURCHARGE CONDITIONS ********* 14.06 5.88 28.02 * 0.012 1.36 2.00 5.66 5.66 5.72 5.88 1.84 14.51 6.59 28.73 * 0.012 1.38 2.00 6.34 6.34 6.42 6.59 1.87 14.97 7.24 29.38 * 0.012 1.40 2.00 6.96 6.96 7.06 7.24 1.91 15.42 7.91 30.05 * 0.012 1.42 2.00 7.60 7.60 7.71 7.91 1.94 PIPE NO.16: 75 LF - 24"CP @ 0.00% OUTLET: 22.14 INLET: 22.14 INTYP: 5 JUNC NO.16: OVERFLOW -EL: 27.87 BEND: 0 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.00 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 10.88 3.48 25.62 * 0.012 1.19 0.00 3.24 3.24 3.38 3.48 1.61 11.34 3.73 25.87 * 0.012 1.21 0.00 3.46 3.46 3.62 3.73 1.65 11.79 3.99 26.13 * 0.012 1.24 0.00 3.70 3.70 3.88 3.99 1.68 12.25 4.28 26.42 * 0.012 1.26 0.00 3.97 3.97 4.16 4.28 1.71 12.70 4.58 26.72 * 0.012 1.29 0.00 4.25 4.25 4.45 4.58 1.75 13.15 4.90 27.04 * 0.012 1.31 0.00 4.54 4.54 4.76 4.90 1.78 13.61 5.24 27.38 * 0.012 1.33 0.00 4.85 4.85 5.08 5.24 1.81 **************** OVERFLOW ENCOUNTERED AT 14.06 CFS DISCHARGE ***************** ******** OVERFLOW CONDITIONS CALCULATED ASSUMING SURCHARGE CONDITIONS ********* 14.06 6.29 28.43 * 0.012 1.36 0.00 5.88 5.88 6.13 6.29 1.84 14.51 7.03 29.17 * 0.012 1.38 0.00 6.59 6.59 6.86 7.03 1.88 14.97 7.70 29.84 * 0.012 1.40 0.00 7.24 7.24 7.52 7.70 1.91 15.42 8.40 30.54 * 0.012 1.42 0.00 7.91 7.91 8.20 8.40 1.94 PIPE NO.17: 86 LF - 24"CP @ 0.23% OUTLET: 22.14 INLET: 22.34 INTYP: 5 JUNC NO.17: OVERFLOW -EL: 27.51 BEND: 5 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.51 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 10.88 3.69 26.03 * 0.012 1.19 1.52 3.48 3.48 3.46 3.69 1.74 11.34 3.96 26.30 * 0.012 1.21 1.58 3.73 3.73 3.71 3.96 1.79 11.79 4.26 26.60 * 0.012 1.24 1.64 3.99 3.99 3.99 4.26 1.83 12.25 4.59 26.93 * 0.012 1.26 1.72 4.28 4.28 4.30 4.59 1.88 12.70 4.92 27.26 * 0.012 1.29 1.86 4.58 4.58 4.61 4.92 1.92 **************** OVERFLOW ENCOUNTERED AT 13.15 CFS DISCHARGE ***************** ******** OVERFLOW CONDITIONS CALCULATED ASSUMING SURCHARGE CONDITIONS ********* 13.15 5.28 27.62 * 0.012 1.31 2.00 4.90 4.90 4.95 5.28 1.97 13.61 5.66 28.00 * 0.012 1.33 2.00 5.24 5.24 5.30 5.66 2.02 14.06 6.76 29.10 * 0.012 1.36 2.00 6.29 6.29 6.38 6.76 2.06 14.51 7.54 29.88 * 0.012 1.38 2.00 7.03 7.03 7.13 7.54 2.11 14.97 8.26 30.60 * 0.012 1.40 2.00 7.70 7.70 7.82 8.26 2.15 15.42 9.00 31.34 * 0.012 1.42 2.00 8.40 8.40 8.54 9.00 2.20 AIt2-36-SPU24.doc Page 7 of 8 r PIPE NO.18: 145 LF - 24"CP @ 0.21% OUTLET: 22.34 INLET: 22.64 INTYP: 5 JUNC NO.18: OVERFLOW -EL: 28.16 BEND: 0 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.00 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 7.21 3.56 26.20 * 0.012 0.96 1.18 3.69 3.69 3.52 3.56 1.29 7.51 3.84 26.48 * 0.012 0.98 1.21 3.96 3.96 3.80 3.84 1.32 7.81 4.16 26.80 * 0.012 1.00 1.24 4.26 4.26 4.11 4.16 1.35 8.11 4.50 27.14 * 0.012 1.02 1.27 4.59 4.59 4.44 4.50 1.38 8.41 4.85 27.49 * 0.012 1.04 1.30 4.92 4.92 4.79 4.85 1.40 8.71 5.22 27.86 * 0.012 1.06 1.34 5.28 5.28 5.16 5.22 1.43 **************** OVERFLOW ENCOUNTERED AT 9.01 CFS DISCHARGE ***************** ******** OVERFLOW CONDITIONS CALCULATED ASSUMING SURCHARGE CONDITIONS ********* 9.01 5.62 28.26 * 0.012 1.08 1.37 5.66 5.66 5.56 5.62 1.45 9.31 6.74 29.38 * 0.012 1.10 1.40 6.76 6.76 6.67 6.74 1.48 9.61 7.53 30.17 * 0.012 1.11 1.44 7.54 7.54 7.46 7.53 1.51 9.91 8.27 30.91 * 0.012 1.13 1.47 8.26 8.26 8.19 8.27 1.53 10.21 9.04 31.68 * 0.012 1.15 1.51 9.00 9.00 8.95 9.04 1.55 PIPE NO.19: 123 LF - 24"CP @ 0.33% OUTLET: 22.64 INLET: 23.05 INTYP: 5 Q(CFS) HW (FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 7.21 3.38 7.51 3.68 7.81 4.01 8.11 4.38 8.41 4.75 8.71 5.15 9.01 5.57 **************** 9.31 6.71 9.61 7.53 9.91 8.30 10.21 9.09 Exit KCBW Program 26.43 * 0.012 0.96 1.02 3.56 3.56 3.26 3.38 1.37 26.73 * 0.012 0.98 1.04 3.84 3.84 3.55 3.68 1.41 27.06 * 0.012 1.00 1.07 4.16 4.16 3.87 4.01 1.44 27.43 * 0.012 1.02 1.09 4.50 4.50 4.22 4.38 1.48 27.80 * 0.012 1.04 1.12 4.85 4.85 4.59 4.75 1.51 28.20 * 0.012 1.06 1.14 5.22 5.22 4.97 5.15 1.54 28.62 * 0.012 1.08 1.16 5.62 5.62 5.38 5.57 1.58 OVERFLOW ENCOUNTERED AT 9.31 CFS DISCHARGE ***************** 29.76 * 0.012 1.10 1.19 6.74 6.74 6.51 6.71 1.61 30.58 * 0.012 1.11 1.21 7.53 7.53 7.31 7.53 1.65 31.35 * 0.012 1.13 1.24 8.27 8.27 8.06 8.30 1.68 32.14 * 0.012 1.15 1.26 9.04 9.04 8.84 9.09 1.71 KING COUNTY DEPARTMENT OF NATURAL RESOURCES Water and Land Resources Division BACKWATER ANALYSIS PROGRAM Version 6.00 AIt2-36-SPU24.doc Page 8 of 8 c ' EX. Rim GS L C �-ro,,� p - z132 AJ9I+ (S.%bar,-1 -- r co � 0 150AAIAJAK 145A �r 140A 8 138A 137A �N 135A_AH — 2 6. 13 ri 125A' 115A_AF,9 C 6 I n TA-c O 1 rr C) '� 3 D. 1 _"—_ 1 0 3 A — 3 ( 2�. 130A 20A 1�1 OA 3 I,4 a PMx � S� � Csoss ins r L0.. �-- r 4-o N w 10 5 A 9 G6, -fb N w ,;, w� ly-r 00roA1,47� 5A_Z,AA,Y )" z 78A 79A / I/ i 3o,I 95A—AEJ 100A eon 3 30A'_ABACAP 3'0, 2S (/ypC6 -L, tiw 160A 1 6.76 W � o l 146A 1 5.52 C 7 G JC O N 140A 6.17 o w 138A 4.95 � C U F o A 137A 4.58 ti o 136A + 4.39 1 C eD � o z. o � i 136A 4.05 c � o � 130A 2.89 C o � o °D 126A 2.33 1� o c 116A A 0.66 110A j 1.90 U j {Uj N r PMX107A T 1.94 o -UJ W PMX106A t 1.91 c o j o D 106A 1.42 +l � A 100A 1.17 W 95A 1.24 w � 0 o as 79A 2.06 P S T-M > �— f"` P 1 N N N N N N N N N N W W W W W W W W W W N W A U ti W m O N W A U p M 9D p O -4 QD OJ G O G O C O G G G G G G G O G G G O G O G G G G G G O G G Ste' I D D D D D D tuo — e c, i mmax _ + + a >J C. DDDDD� e 6 N � W — .�► N :44 m c _ e rn 6 6� no yy- to a I -A W N N r- N W .0 1" 0 _ H 1 w 0 v ce c 36,2Li� 3 v C-v 06„ r, 2-14 5 P+1 N'cw 30",7 )_4f.. SWP-27-3529 Lake Ave S / Rainier Ave S Storm Project 11/05/10 Prelim Future Storm System Backwater Analysis D.Carey KING COUNTY DEPARTMENT OF NATURAL RESOURCES Water and Land Resources Division /VO ov[rA, BACKWATER ANALYSIS PROGRAM Version 6.00 File Opened for Reading:Fut-6 36-24-30.bwp Changed pipes from Rainier Ave to SPU Water Mains to 36-inch. Ex. SPU crossing at 24-inch. S 2nd St thru Lake Ex. 30-inch. REVIEW OF THE PIPE -DATA PI OUTLET INLET IN # LENGTH DI TY ELEV ELEV TY KE K M C Y 1 154.00 36 4 17.26 17.47 8 .50 .0083 2.0 .0496 .57 2 38.00 36 4 17.37 17.09 8 .50 .0083 2.0 .0496 .57 3 200.00120 1 17.50 18.19 5 .50 .0098 2.0 .0398 .67 4 42.00 36 1 18.19 18.47 5 .50 .0098 2.0 .0398 .67 5 215.00 36 1 18.47 19.00 5 .50 .0098 2.0 .0398 .67 6 97.00 36 1 19.00 18.64 5 .50 .0098 2.0 .0398 .67 7 106.00 36 1 18.64 18.72 5 .50 .0098 2.0 .0398 .67 8 115.00 36 1 18.72 18.84 5 .50 .0098 2.0 .0398 .67 9 61.00 24 1 18.90 21.08 5 .50 .0098 2.0 .0398 .67 10 80.00 30 1 21.09 21.11 5 .50 .0098 2.0 .0398 .67 11 27.00 30 1 21.11 21.18 5 .50 .0098 2.0 .0398 .67 12 110.00 30 1 21.18 21.64 5 .50 .0098 2.0 .0398 .67 13 178.00 30 1 21.64 21.90 5 .50 .0098 2.0 .0398 .67 14 78.00 30 1 21.90 21.95 5 .50 .0098 2.0 .0398 .67 15 77.00 30 1 21.95 22.14 5 .50 .0098 2.0 .0398 .67 16 75.00 30 1 22.14 22.14 5 .50 .0098 2.0 .0398 .67 17 86.00 30 1 22.14 22.34 5 .50 .0098 2.0 .0398 .67 18 145.00 30 1 22.34 22.64 5 .50 .0098 2.0 .0398 .67 19 123.00 30 1 22.64 23.05 5 .50 .0098 2.0 .0398 .67 File Opened for Reading:Fut-6 36-24-30.bwp File Opened for Reading:ExTW1.bwt HW/TW Data File:ExTW1.bwt Stage(ft) Discharge(cfs) 1.1 10.00 1.4 15.00 1.7 20.00 2.6 35.00 Zero Stage Elevation:17.09 feet BACKWATER COMPUTER PROGRAM FOR PIPES Pipe data from file:Fut-6 36-24-30.bwp Surcharge condition at intermediate junctions Tailwater from HW/TW File: ExTW1.bwt Discharge Range: 24. to 33. Step of 1. (cfs] Overflow Elevation: 28.81 feet Weir: NONE Upstream Velocity: 0.1 feet/sec OVERFLO BND STRU Q ELEV ANG WIDE RAT 30.17 0 5.0 0.00 30.57 45 5.0 0.25 30.25 10 10.0 0.14 30.27 0 4.0 0.00 27.56 40 4.0 0.00 29.39 0 4.0 0.00 30.97 0 4.0 0.00 31.48 11 4.0 0.17 30.78 0 4.0 0.00 28.83 30 4.0 0.15 29.19 30 4.0 0.00 27.97 0 4.0 0.00 26.76 0 4.0 0.15 26.62 0 4.0 0.00 27.29 0 4.0 0.00 27.87 0 4.0 0.00 27.51 5 4.0 0.51 28.16 0 4.0 0.00 S"Yr Plus, Fut-6 36-24-30.doc Page 1 of 8 Prelim Future Conditions Analysis - Change new pipes to 36", SPU crossing 24", Lake Ave to 30" Design flow for Existing Conditions: from G&O Feb. 2003 Pre -Design Analysis Report At Node 79A: Q 2 year = 19.6 cfs, Q 10 yr = 23.5 cfs, Q 25yr = 27.8 cfs Q100yr-Fut 25yr = 30.6cfs 1st iteration, 5th iteration -8th iteration PIPE NO. 1: 154 LF-43"X27"CMAP @ 0.14% OUTLET: 17.26 INLET: 17.47 INTYP: 8 JUNC NO. 1: OVERFLOW -EL: 30.17 BEND: 0 DEG DIA/WIDTH: 5.0 Q-RATIO: 0.00 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 24.00 2.89 20.36 * 0.024 1.47 2.25 1.77 1.77 2.60 2.89 1.95 25.00 3.03 20.50 * 0.024 1.51 2.25 1.83 1.83 2.71 3.03 2.02 26.00 3.17 20.64 * 0.024 1.55 2.25 1.89 1.89 2.82 3.17 2.08 27.00 3.32 .20.79 * 0.024 1.59 2.25 1.95 1.95 2.94 3.32 2.14 28.00 3.47 20.94 * 0.024 1.63 2.25 2.01 2.01 3.06 3.47 2.21 29.00 3.64 21.11 * 0.024 1.68 2.25 2.07 2.07 3.19 3.64 2.28 30.00 3.82 21.29 * 0.024 1.72 2.25 2.13 2.13 3.34 3.82 2.34 31.00 4.03 21.50 * 0.024 1.76 2.25 2.19 2.19 3.51 4.03 2.41 32.00 4.32 21.79 * 0.024 1.80 2.25 2.25 2.25 3.76 4.32 2.48 33.00 4.52 21.99 * 0.024 1.84 2.25 2.31 2.31 3.93 4.52 2.55 PIPE NO. 2: 38 LF-43"X27"CMAP @-0.74% OUTLET: 17.37 INLET: 17.09 INTYP: 8 JUNC NO. 2: OVERFLOW -EL: 30.57 BEND: 45 DEG DIA/WIDTH: 5.0 Q-RATIO: 0.25 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 24.00 3.84 20.93 * 0.024 1.47 0.00 2.99 2.99 3.51 3.84 2.00 25.00 4.03 21.12 * 0.024 1.51 0.00 3.13 3.13 3.67 4.03 2.07 26.00 4.22 21.31 * 0.024 1.55 0.00 3.27 3.27 3.83 4.22 2.13 27.00 4.42 21.51 * 0.024 1.59 0.00 3.42 3.42 4.00 4.42 2.19 28.00 4.63 21.72 * 0.024 1.63 0.00 3.57 3.57 4.18 4.63 2.26 29.00 4.85 21.94 * 0.024 1.68 0.00 3.74 3.74 4.36 4.85 2.33 30.00 5.09 22.18 * 0.024 1.72 0.00 3.92 3.92 4.57 5.09 2.39 31.00 5.36 22.45 * 0.024 1.76 0.00 4.13 4.13 4.80 5.36 2.46 32.00 5.71 22.80 * 0.024 1.80 0.00 4.42 4.42 5.12 5.71 2.52 33.00 5.98 23.07 * 0.024 1.84 0.00 4.62 4.62 5.35 5.98 2.59 Fut-6 36-24-30.doc Page 2 of 8 PIPE NO. 3: 200 LF - **"CP @ 0.35% OUTLET: 17.50 INLET: 18.19 INTYP: 5 JUNC NO. 3: OVERFLOW -EL: 30.25 BEND: 10 DEG DIA/WIDTH:10.0 Q-RATIO: 0.14 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 19.20 2.74 20.93 * 0.012 1.01 0.94 3.43 3.43 2.74 2.69 1.25 20.00 2.93 21.12 * 0.012 1.03 0.96 3.62 3.62 2.93 2.87 1.27 20.80 3.12 21.31 * 0.012 1.05 0.98 3.81 3.81 3.12 3.06 1.30 21.60 3.32 21.51 * 0.012 1.07 1.00 4.01 4.01 3.32 3.25 1.32 22.40 3.53 21.72 * 0.012 1.09 1.01 4.22 4.22 3.53 3.45 1.34 23.20 3.75 21.94 * 0.012 1.11 1.03 4.44 4.44 3.75 3.66 1.35 24.00 3.99 22.18 * 0.012 1.13 1.05 4.68 4.68 3.99 3.89 1.37 24.80 4.26 22.45 * 0.012 1.15 1.06 4.95 4.95 4.26 4.15 1.39 25.60 4.61 22.80 * 0.012 1.16 1.08 5.30 5.30 4.61 4.49 1.41 26.40 4.88 23.07 * 0.012 1.18 1.10 5.57 5.57 4.88 4.75 1.42 PIPE NO. 4: 42 LF - 36"CP @ 0.67% OUTLET: 18.19 INLET: 18.47 INTYP: 5 JUNC NO. 4: OVERFLOW -EL: 30.27 BEND: 0 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.00 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 16.84 2.55 21.02 * 0.012 1.32 1.10 2.74 2.74 2.47 2.55 1.77 17.54 2.74 21.21 * 0.012 1.35 1.13 2.93 2.93 2.67 2.74 1.81 18.25 2.93 21.40 * 0.012 1.37 1.15 3.12 3.12 2.87 2.93 1.85 18.95 3.13 21.60 * 0.012 1.40 1.17 3.32 3.32 3.07 3.13 1.88 19.65 3.34 21.81 * 0.012 1.43 1.20 3.53 3.53 3.28 3.34 1.92 20.35 3.57 22.04 * 0.012 1.45 1.22 3.75 3.75 3.50 3.57 1.96 21.05 3.82 22.29 * 0.012 1.48 1.24 3.99 3.99 3.75 3.82 1.99 21.75 4.09 22.56 * 0.012 1.50 1.27 4.26 4.26 4.02 4.09 2.03 22.46 4.45 22.92 * 0.012 1.53 1.29 4.61 4.61 4.37 4.45 2.06 23.16 4.73 23.20 * 0.012 1.55 1.31 4.88 4.88 4.64 4.73 2.10 PIPE NO. 5: 215 LF - 36"CP @ 0.25% OUTLET: 18.47 INLET: 19.00 INTYP: 5 JUNC NO. 5: OVERFLOW -EL: 27.56 BEND: 40 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.00 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 16.84 2.29 21.29 * 0.012 1.32 1.45 2.55 2.55 2.12 2.29 1.80 17.54 2.45 21.45 * 0.012 1.35 1.49 2.74 2.74 2.30 2.45 1.84 18.25 2.63 21.63 * 0.012 1.37 1.52 2.93 2.93 2.51 2.63 1.88 18.95 2.84 21.84 * 0.012 1.40 1.55 3.13 3.13 2.73 2.84 1.92 19.65 3.07 22.07 * 0.012 1.43 1.59 3.34 3.34 2.97 3.07 1.96 20.35 3.33 22.33 * 0.012 1.45 1.62 3.57 3.57 3.22 3.33 2.00 21.05 3.58 22.58 * 0.012 1.48 1.66 3.82 3.82 3.47 3.58 2.04 21.75 3.88 22.88 * 0.012 1.50 1.69 4.09 4.09 3.76 3.88 2.08 22.46 4.26 23.26 * 0.012 1.53 1.72 4.45 4.45 4.13 4.26 2.12 23.16 4.56 23.56 * 0.012 1.55 1.76 4.73 4.73 4.42 4.56 2.15 Fut-6 36-24-30.doc Page 3 of 8 PIPE NO. 6: 97 LF - 36"CP @ -0.37% OUTLET: 19.00 INLET: 18.64 INTYP: 5 JUNC NO. 6: OVERFLOW -EL: 29.39 BEND: 0 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.00 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 16.84 2.80 21.44 * 0.012 1.32 0.00 2.29 2.29 2.74 2.80 1.79 17.54 2.95 21.59 * 0.012 1.35 0.00 2.45 2.45 2.90 2.95 1.82 18.25 3.13 21.77 * 0.012 1.37 0.00 2.63 2.63 3.07 3.13 1.86 18.95 3.33 21.97 * 0.012 1.40 0.00 2.84 2.84 3.27 3.33 1.90 19.65 3.56 22.20 * 0.012 1.43 0.00 3.07 3.07 3.50 3.56 1.94 20.35 3.83 22.47 * 0.012 1.45 0.00 3.33 3.33 3.76 3.83 1.97 21.05 4.10 22.74 * 0.012 1.48 0.00 3.58 3.58 4.03 4.10 2.01 21.75 4.40 23.04 * 0.012 1.50 0.00 3.88 3.88 4.33 4.40 2.04 22.46 4.79 23.43 * 0.012 1.53 0.00 4.26 4.26 4.71 4.79 2.08 23.16 5.10 23.74 * 0.012 1.55 0.00 4.56 4.56 5.02 5.10 2.11 PIPE NO. 7: 106 LF - 36"CP @ 0.08% OUTLET: 18.64 INLET: 18.72 INTYP: 5 JUNC NO. 7: OVERFLOW -EL: 30.97 BEND: 0 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.00 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 16.84 2.83 21.55 * 0.012 1.32 2.13 2.80 2.80 2.77 2.83 1.78 17.54 2.98 21.70 * 0.012 1.35 2.20 2.95 2.95 2.93 2.98 1.82 18.25 3.17 21.89 * 0.012 1.37 2.27 3.13 3.13 3.12 3.17 1.86 18.95 3.38 22.10 * 0.012 1.40 2.35 3.33 3.33 3.32 3.38 1.89 19.65 3.62 22.34 * 0.012 1.43 2.44 3.56 3.56 3.56 3.62 1.93 20.35 3.90 22.62 * 0.012 1.45 2.54 3.83 3.83 3.83 3.90 1.97 21.05 4.18 22.90 * 0.012 1.48 2.68 4.10 4.10 4.11 4.18 2.00 21.75 4.50 23.22 * 0.012 1.50 3.00 4.40 4.40 4.42 4.50 2.04 22.46 4.90 23.62 * 0.012 1.53 3.00 4.79 4.79 4.82 4.90 2.07 23.16 5.22 23.94 * 0.012 1.55 3.00 5.10 5.10 5.13 5.22 2.10 PIPE NO. 8: 115 LF - 36"CP @ 0.10% OUTLET: 18.72 INLET: 18.84 INTYP: 5 JUNC NO. 8: OVERFLOW -EL: 31.48 BEND: 11 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.17 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 16.84 2.76 21.60 * 0.012 1.32 1.89 2.83 2.83 2.76 2.64 1.60 17.54 2.93 21.77 * 0.012 1.35 1.95 2.98 2.98 2.93 2.79 1.62 18.25 3.13 21.97 * 0-012 1.37 2.00 3.17 3.17 3.13 2.97 1.65 18.95 3.34 22.18 * 0.012 1.40 2.06 3.38 3.38 3.34 3.17 1.67 19.65 3.59 22.43 * 0.012 1.43 2.11 3.62 3.62 3.59 3.41 1.69 20.35 3.87 22.71 * 0.012 1.45 2.17 3.90 3.90 3.87 3.68 1.70 21.05 4.16 23.00 * 0.012 1.48 2.23 4.18 4.18 4.16 3.95 1.72 21.75 4.48 23.32 * 0.012 1.50 2.30 4.50 4.50 4.48 4.26 1.74 22.46 4.89 23.73 * 0.012 1.53 2.37 4.90 4.90 4.89 4.65 1.75 23.16 5.22 24.06 * 0.012 1.55 2.44 5.22 5.22 5.22 4.97 1.77 Fut-6 36-24-30.doc Page 4 of 8 PIPE NO. 9: 61 LF - 24"CP @ 3.57% OUTLET: 18.90 INLET: 21.08 INTYP: 5 JUNC NO. 9: OVERFLOW -EL: 30.78 BEND: 0 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.00 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI 14.39 2.02 23.10 * 0.012 1.37 0.77 2.70 2.70 1.37 ***** 2.02 14.99 2.08 23.16 * 0.012 1.40 0.79 2.87 2.87 1.40 ***** 2.08 15.59 2.13 23.21 * 0.012 1.43 0.80 3.07 3.07 1.43 ***** 2.13 16.19 2.20 23.28 * 0.012 1.46 0.82 3.28 3.28 1.46 ***** 2.20 16.79 2.26 23.34 * 0.012 1.48 0.84 3.53 3.53 1.48 ***** 2.26 17.39 2.32 23.40 * 0.012 1.51 0.85 3.81 3.81 1.51 ***** 2.32 17.99 2.41 23.49 * 0.012 1.53 0.87 4.10 4.10 1.53 ***** 2.41 18.59 3.20 24.28 * 0.012 1.56 0.89 4.42 4.42 2.60 3.20 2.48 19.19 3.66 24.74 * 0.012 1.58 0.90 4.83 4.83 3.02 3.66 2.56 19.79 4.05 25.13 * 0.012 1.60 0.92 5.16 5.16 3.38 4.05 2.64 PIPE NO.10: 80 LF - 30"CP @ 0.03% OUTLET: 21.09 INLET: 21.11 INTYP: 5 JUNC NO.10: OVERFLOW -EL: 28.83 BEND: 30 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.15 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 14.39 2.27 23.38 * 0.012 1.28 2.50 2.01 2.01 2.08 2.27 1.80 14.99 2.33 23.44 * 0.012 1.31 2.50 2.07 2.07 2.14 2.33 1.84 15.59 2.39 23.50 * 0.012 1.34 2.50 2.12 2.12 2.20 2.39 1.89 16.19 2.46 23.57 * 0.012 1.36 2.50 2.19 2.19 2.27 2.46 1.93 16.79 2.53 23.64 * 0.012 1.39 2.50 2.25 2.25 2.33 2.53 1.97 17.39 2.60 23.71 * 0.012 1.42 2.50 2.31 2.31 2.40 2.60 2.01 17.99 2.72 23.83 * 0.012 1.44 2.50 2.40 2.40 2.51 2.72 2.05 18.59 3.53 24.64 * 0.012 1.47 2.50 3.19 3.19 3.31 3.53 2.09 19.19 4.02 25.13 * 0.012 1.49 2.50 3.65 3.65 3.78 4.02 2.13 19.79 4.43 25.54 * 0.012 1.52 2.50 4.04 4.04 4.18 4.43 2.17 PIPE NO.11: 27 LF - 30"CP @. 0.26% OUTLET: 21.11 INLET: 21.18 INTYP: 5 JUNC NO.11: OVERFLOW -EL: 29.19 BEND: 30 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.00 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 12.52 2.31 23.49 * 0.012 1.19 1.33 2.27 2.27 2.22 2.31 1.63 13.04 2.37 23.55 * 0.012 1.22 1.37 2.33 2.33 2.28 2.37 1.67 13.56 2.44 23.62 * 0.012 1.24 1.40 2.39 2.39 2.35 2.44 1.70 14.08 2.51 23.69 * 0.012 1.27 1.43 2.46 2.46 2.42 2.51 1.74 14.60 2.59 23.77 * 0.012 1.29 1.47 2.53 2.53 2.49 2.59 1.77 15.13 2.67 23.85 * 0.012 1.32 1.50 2.60 2.60 2.57 2.67 1.81 15.65 2.79 23.97 * 0.012 1.34 1.53 2.72 2.72 2.68 2.79 1.84 16.17 3.62 24.80 * 0.012 1.36 1.57 3.53 3.53 3.50 3.62 1.88 16.69 4.11 25.29 * 0.012 1.39 1.60 4.02 4.02 3.98 4.11 1.91 17.21 4.54 25.72 * 0.012 1.41 1.64 4.43 4.43 4.40 4.54 1.94 Fut-6 36-24-30.doc Page 5 of 8 PIPE NO.12: 110 LF - 30"CP @ 0.42% OUTLET: 21.18 INLET: 21.64 INTYP: 5 ' JUNC NO.12: OVERFLOW -EL: 27.97 BEND: 0 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.00 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI 12.52 2.03 23.67 * 0.012 1.19 1.16 2.31 2.31 1.90 2.03 1.61 13.04 2.09 23.73 * 0.012 1.22 1.19 2.37 2.37 1.97 2.09 1.64 13.56 2.16 23.80 * 0.012 1.24 1.21 2.44 2.44 2.05 2.16 1.68 14.08 2.25 23.89 * 0.012 1.27 1.24 2.51 2.51 2.14 2.25 1.71 14.60 2.33 23.97 * 0.012 1.29 1.27 2.59 2.59 2.23 2.33 1.74 15.13 2.42 24.06 * 0.012 1.32 1.29 2.67 2.67 2.33 2.42 1.78 15.65 2.55 24.19 * 0.012 1.34 1.32 2.79 2.79 2.47 2.55 1.81 16.17 3.40 25.04 * 0.012 1.36 1.35 3.62 3.62 3.31 3.40 1.84 16.69 3.90 25.54 * 0.012 1.39 1.37 4.11 4.11 3.81 3.90 1.87 17.21 4.34 25.98 * 0.012 1.41 1.40 4.54 4.54 4.24 4.34 1.90 PIPE NO.13: 178 LF - 30"CP @ 0.15% OUTLET: 21.64 INLET: 21.90 INTYP: 5 JUNC NO.13: OVERFLOW -EL: 26.76 BEND: 0 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.15 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 12.52 2.07 23.97 * 0.012 1.19 1.60 2.03 2.03 1.91 2.07 1.64 13.04 2.14 24.04 * 0.012 1.22 1.65 2.09 2.09 1.98 2.14 1.68 13.56 2.20 24.10 * 0.012 1.24 1.69 2.16 2.16 2.05 2.20 1.72 14.08 2.29 24.19 * 0.012 1.27 1.74 2.25 2.25 2.14 2.29 1.76 14.60 2.37 24.27 * 0.012 1.29 1.79 2.33 2.33 2.23 2.37 1.79 15.13 2.48 24.38 * 0.012 1.32 1.84 2.42 2.42 2.34 2.48 1.83 15.65 2.65 24.55 * 0.012 1.34 1.90 2.55 2.55 2.52 2.65 1.87 16.17 3.52 25.42 * 0.012 1.36 1.95 3.40 3.40 3.37 3.52 1.90 16.69 4.04 25.94 * 0.012 1.39 2.02 3.90 3.90 3.89 4.04 1.94 17.21 4.51 26.41 * 0.012 1.41 2.09 4.34 4.34 4.35 4.51 1.97 PIPE NO.14: 78 LF - 30"CP @ 0.06% OUTLET: 21.90 INLET: 21.95 INTYP: 5 JUNC NO.14: OVERFLOW -EL: 26.62 BEND: 0 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.00 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 10.88 2.14 24.09 * 0.012 1.11 1.98 2.07 2.07 2.07 2.14 1.50 11.34 2.21 24.16 * 0.012 1.13 2.07 2.14 2.14 2.14 2.21 1.53 11.79 2.28 24.23 * 0.012 1.16 2.18 2.20 2.20 2.21 2.28 1.56 12.25 2.34 24.29 * 0.012 1.18 2.50 2.29 2.29 2.28 2.34 1.59 12.70 2.43 24.38 * 0.012 1.20 2.50 2.37 2.37 2.37 2.43 1.62 13.15 2.55 24.50 * 0.012 1.22 2.50 2.48 2.48 2.49 2.55 1.66 13.61 2.74 24.69 * 0.012 1.25 2.50 2.65 2.65 2.68 2.74 1.69 14.06 3.61 25.56 * 0.012 1.27 2.50 3.52 3.52 3.54 3.61 1.71 14.51 4.15 26.10 * 0.012 1.29 2.50 4.04 4.04 4.08 4.15 1.74 14.97 4.63 26.58 * 0.012 1.31 2.50 4.51 4.51 4.55 4.63 1.77 Fut-6 36-24-30.doc Page 6 of 8 PIPE NO.15: 77 LF - 30"CP @ 0.25% OUTLET: 21.95 INLET: 22.14 INTYP: 5 ' JUNC NO.15: OVERFLOW -EL: 27.29 BEND: 0 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.00 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI 10.88 2.07 24.21 * 0.012 1.11 1.24 2.14 2.14 1.99 2.07 1.50 11.34 2.14 24.28 * 0.012 1.13 1.28 2.21 2.21 2.06 2.14 1.53 11.79 2.21 24.35 * 0.012 1.16 1.31 2.28 2.28 2.13 2.21 1.56 12.25 2.27 24.41 * 0.012 1.18 1.34 2.34 2.34 2.20 2.27 1.59 12.70 2.36 24.50 * 0.012 1.20 1.36 2.43 2:43 2.29 2.36 1.62 13.15 2.48 24.62 * 0.012 1.22 1.39 2.55 2.55 2.42 2.48 1.65 13.61 2.69 24.83 * 0.012 1.25 1.42 2.74 2.74 2.63 2.69 1.68 14.06 3.56 25.70 * 0.012 1.27 1..45 3.61 3.61 3.50 3.56 1.71 14.51 4.11 26.25 * 0.012 1.29 1.48 4.15 4.15 4.04 4.11 1.74 14.97 4.60 26.74 * 0.012 1.31 1.51 4.63 4.63 4.52 4.60 1.77 PIPE NO.16: 75 LF - 30"CP @ 0.00% OUTLET: 22.14 INLET: 22.14 INTYP: 5 JUNC NO.16: OVERFLOW -EL: 27.87 BEND: 0 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.00 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 10.88 2.19 24.33 * 0.012 1.11 0.00 2.07 2.07 2.12 2.19 1.50 11.34 2.25 24.39 * 0.012 1.13 0.00 2.14 2.14 2.19 2.25 1.53 11.79 2.33 24.47 * 0.012 1.16 0.00 2.21 2.21 2.27 2.33 1.56 12.25 2.39 24.53 * 0.012 1.18 0.00 2.27 2.27 2.33 2.39 1.59 12.70 2.47 24.61 * 0.012 1.20 0.00 2.36 2.36 2.42 2.47 1.63 13.15 2.61 24.75 * 0.012 1.22 0.00 2.48 2.48 2.55 2.61 1.66 13.61 2.82 24.96 * 0.012 1.25 0.00 2.69 2.69 2.76 2.82 1.69 14.06 3.71 25.85 * 0.012 1.27 0.00 3.56 3.56 3.64 3.71 1.72 14.51 4.26 26.40 * 0.012 1.29 0.00 4.11 4.11 4.19 4.26 1.74 14.97 4.76 26.90 * 0.012 1.31 0.00 4.60 4.60 4.68 4.76 1.77 PIPE NO.17: 86 LF - 30"CP @ 0.23% OUTLET: 22.14 INLET: 22.34 INTYP: 5 JUNC NO.17: OVERFLOW -EL: 27.51 BEND: 5 DEG DIA/WIDTH: 4.0 Q-RATIO: 0..51 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 10.88 2.16 24.50 * 0.012 1.11 1.27 2.19 2.19 2.03 2.16 1.55 11.34 2.23 24.57 * 0.012 1.13 1.30 2.25 2.25 2.10 2.23 1.59 11.79 2.30 24.64 * 0.012 1.16 1.33 2.33 2.33 2.17 2.30 1.62 12.25 2.38 24.72 * 0.012 1.18 1.36 2.39 2.39 2.24 2.38 1.66 12.70 2.48 24.82 * 0.012 1.20 1.39 2.47 2.47 2.34 2.48 1.70 13.15 2.63 24.97 * 0.012 1.22 1.42 2.61 2.61 2.49 2.63 1.73 13.61 2.86 25.20 * 0.012 1.25 1.45 2.82 2.82 2.71 2.86 1.77 14.06 3.75 26.09 * 0.012 1.27 1.48 3.71 3.71 3.59 3.75 1.80 14.51 4.32 26.66 * 0.012 1.29 1.51 4.26 4.26 4.15 4.32 1.84 14.97 4.83 27.17 * 0.012 1.31 1.54 4.76 4.76 4.66 4.83 1.87 Fut-6 36-24-30.doc Page 7 of 8 b t PIPE NO.18: 145 LF - 30"CP @ 0.21% OUTLET: 22.34 INLET: 22.64 INTYP: 5 ' JUNC NO.18: OVERFLOW -EL: 28.16 BEND: 0 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.00 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI 7.21 1.93 24.57 * 0.012 0.90 1.04 2.16 2.16 1.89 1.93 1.20 7.51 2.01 24.65 * 0.012 0.92 1.06 2.23 2.23 1.97 2.01 1.23 7.81 2.08 24.72 * 0.012 0.93 1.08 2.30 2.30 2.04 2.08 1.26 8.11 2.16 24.80 * 0.012 0.95 1.11 2.38 2.38 2.12 2.16 1.28 8.41 2.25 24.89 * 0.012 0.97 1.13 2.48 2.48 2.22 2.25 1.31 8.71 2.41 25.05 * 0.012 0.99 1.15 2.63 2.63 2.38 2.41 1.33 9.01 2.65 25.29 * 0.012 1.01 1.17 2.86 2.86 2.62 2.65 1.35 9.31 3.54 26.18 * 0.012 1.02 1.20 3.75 3.75 3.51 3.54 1.38 9.61 4.12 26.76 * 0.012 1.04 1.22 4.32 4.32 4.09 4.12 1.40 9.91 .4.64 27.28 * 0.012 1.06 1.24 4.83 4.83 4.61 4.64 1.42 PIPE NO.19: 123 LF - 30"CP @ 0.33% OUTLET: 22.64 INLET: 23.05 INTYP: 5 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 7.21 1.67 24.72 * 0.012 0.90 0.91 1.93 1.93 1.55 1.67 1.24 7.51 1.74 24.79 * 0.012 0.92 0.93 2.01 2.01 1.63 1.74 1.26 7.81 1.81 24.86 * 0.012 0.93 0.95 2.08 2.08 1.70 1.81 1.29 8.11 1.88 24.93 * 0.012 0.95 0.97 2.16 2.16 1.77 1.88 1.32 8.41 1.98 25.03 * 0.012 0.97 0.99 2.25 2.25 1.87 1.98 1.35 8.71 2.13 25.18 * 0.012 0.99 1.01 2.41 2.41 2.03 2.13 1.38 9.01 2.37 25.42 * 0.012 1.01 1.03 2.65 2.65 2.28 2.37 1.40 9.31 3.27 26.32 * 0.012 1.02 1.05 3.54 3.54 3.19 3.27 1.43 9.61 3.85 26.90 * 0.012 1.04 1.07 4.12 4.12 3.77 3.85 1.46 9.91 4.39 27.44 * 0.012 1.06 1.08 4.64 4.64 4.29 4.39 1.48 Exit KCBW Program KING COUNTY DEPARTMENT OF NATURAL RESOURCES Water and Land Resources Division BACKWATER ANALYSIS PROGRAM Version 6.00 Fut-6 36-24-30.doc Page 8 of 8 L X 7c' Daniel W Carey From: Julie Brandt [JBrandt@parametrix.com] Sent: Tuesday, May 04, 2010 3:28 PM To: Daniel W Carey Cc: Jeffrey Coop; Stuart Currie; Jamee Tate Subject: RE: Lake Ave: Results for 36-inch Pipe, KCBWM Attachments: LakeAveFloodProfile-XPSWMM.pdf Hi Dan, We've reviewed the KCBW results that you sent against the results in SWMM, and we're still seeing differences. However, we believe these differences are reasonable and are inherent in the models' calculation methodologies. Specifically, SWMM is a volume -based analysis tool that can account for uneven volume distribution throughout the system, and KCBW is not. SWMM calculates flow rates in the pipe based on the actual volume that is routed through the system at a specific time interval and at a specific location (using the Saint-Venant equations and dynamic wave routing). If there is insufficient storage volume available at the given time and location, the system will overtop. KCBW uses the energy equation to balance upstream elevations with downstream elevations based strictly on physical geometry and assumes more even volume distribution. KCBW cannot account for uneven volume distribution through the system or wave -like differentials in the incoming runoff. Therefore, SWMM may show a steeper water surface profile and associated flooding in instances when KCBW potentially would not. As part of our check, our modeling team verified consistency between the Lake Ave SWMM model and the KCBW model for the following: • 42"x24" CMPA in the downstream system; • A lower tailwater based on the 42"x24" CMPA; • Rim and invert elevations consistent with City data; • A 36" SD from Node 115A to the node upstream of the box culvert; • Insertion of flows from Basin Al into Node 140A; • Insertion of flows from Basin AD into Node 120A; and, • Insertion of flows from Basin AF into Node 110A. Attached is a plot summarizing the model profile and the simulated flooding at the time -step corresponding to hydrologic peak inflow. This version incorporates an upgrade to a 36" pipe through the project area and, as you can see, still shows flooding in the upstream portion. Please review this information and let us know if you would like us to proceed with our design analysis using SWMM or if you would like to discuss a scope change. We'll hold off on any further modeling effort until we hear back from you. Of course, feel free to contact Jeff (253-501-5154) or me (425-458-6274) if you should have any questions about the above. Regards, Julie Parametrix inspired people. inspired solutions. making a difference Julie G. Brandt, P.E. Water Resources Engineer 411 108th Ave NE, Suite 1800 Bellevue, WA 98004-5571 phone:425-458-6274 fax:425-458-6363 cell: 425-417-9058 jbrandt(o)parametrix.com (�,p,� Before printing, please think green. From: Daniel W Carey [mailto:Dcarey@Rentonwa.gov] Sent: Monday, April 26, 2010 4:54 PM To: Jeffrey Coop Cc: Julie Brandt; Stuart Currie; Jamee Tate Subject: Lake Ave: Results for 36-inch Pipe, KCBWM Hi Jeff, Julie, Attached is a pdf copy of my KCBW model results using a 36-inch pipe through the section under the SPU pipes. See how that compares with your results. Daniel From: Daniel W Carey Sent: Thursday, April 22, 2010 2:48 PM To: 'Jeffrey Coop' Cc: Julie Brandt; Stuart Currie; Jamee Tate Subject: RE: Lake Ave: Revised CB and Model Info Hi Jeff, I just ran a couple of pipe size alternatives for existing conditions. To reduce the backwater in Lake Ave it looks like the new storm pipe from the box culvert through the SPU water lines needs to be replaced. A new 30-inch pipe had about 3 pipes in Lake Ave overflowing before reaching the existing 25-year flow, and about 3 or 4 a couple of cfs away from overflow. A new 36-inch contained the existing 25-year flow in all pipes. Based on my model results it look like we need at least a new 36-inch pipe, and will need to replace the section through the SPU water mains. Try that as one of your model runs for existing conditions. Given the complications around the SPU pipes we may need to open trench that section. Thanks, Daniel From: Jeffrey Coop [mailto:JCoop@parametrix.com] Sent: Thursday, April 22, 2010 2:35 PM To: Daniel W Carey Cc: Julie Brandt; Stuart Currie; Jamee Tate Subject: RE: Lake Ave: Revised CB and Model Info Daniel We'll review the information regarding Items 1 and 2 and incorporate accordingly. In terms of Item 4, we think the pipe should be lined, such as with Insituform, due to the condition of the pipe. This would avoid replacing the pipe. This would increase the Manning's "n" coefficient but reduce the diameter by 1-inch. We will incorporate this into the other model changes to determine impacts to the upstream system. Jeff From: Daniel W Carey [mailto:Dcarey@Rentonwa.gov] Sent: Thursday, April 22, 2010 9:46 AM To: Jeffrey Coop Cc: Julie Brandt; Stuart Currie; Jamee Tate Subject: Lake Ave: Revised CB and Model Info Hi Jeff, Attached is a pdf with my info. Check, and revise your existing conditions model accordingly. 1— The City crew measured the CMPA in Node 79A, 80A as 42"x26". There is probably some distortion in the pipe so I assume the CMPA's are the standard 43"x27" size. Attached is a Headwater Depth nomograph for the CMPA. 2 — I checked the rim info using the existing information, Parametrix survey, and the as -built from D-2172. The attached figure shows what I think are the lowest CB rim elevations for each node. Check and confirm. Since many of the lowest rim elevations are from adjacent CB's be sure to note the CB used in your report/tables. I used the KCBW model for the existing system and conditions (output attached). I assume your results look similar. 3 — I'll check/revise the basin assumptions for the future conditions in the next couple days. 4 — Have you evaluated the condition of the existing pipe that crosses the SPU water mains, does it need to be replaced? Thanks, Daniel From: Jeffrey Coop [mailto:JCoop@parametrix.com] Sent: Monday, April 19, 2010 3:01 PM To: Daniel W Carey Cc: Julie Brandt; Stuart Currie; Jamee Tate Subject: RE: Lake Avenue: preliminary hydraulics results Thanks, Daniel. In terms of #2 below, we did lower the rims to reflect overflow elevations at the structures along the curb line since the catch basins are lower than the mainline rims. The catch basins would likely overtop before water would reach the mainline structure rim elevations. Our objective was to set the model to reflect when problems would be encountered rather than introducing another step of checking model results against elevations of catch basins. In terms of #3 and future pipe connection sizes per the future roadway plans, could you clarify the future pipe sizes? The only thing that seems like a change is the 72-inch CMP stub at the end of the box culvert. The final model can reflect this but it is not anticipated to reduce the upstream flooding. The thing that will help the most is likely changing the future land cover to existing conditions or a reduced impervious cover. Keep us posted! Jeff From: Daniel W Carey [mailto:Dcarey@Rentonwa.gov] Sent: Monday, April 19, 2010 2:35 PM To: Jeffrey Coop Cc: Julie Brandt; Stuart Currie; Jamee Tate Subject: RE: Lake Avenue: preliminary hydraulics results Hi Jeff, Hold off on any further analysis. I think I found where some of the model problem may be. 1— The ex. Downstream pipe from node 80A south is a 24x42 CMPA. The G&O report seems to have shortened the description to just a 24". See the RW Beck Nov. 1998 report and appendices (bound separately, see attachment). Also see the draft 2009 Transportation Plans for Rainier Ave by KPG (handed out at our kickoff meeting). I'm going to get the City maintenance crew to check nodes 80A, 79A to confirm the existing pipe size (probably on Weds). ( table for 27x43 CMPA says Area=6.4 sf, equivalent to 36" circular pipe. A 34" circular pipe is 6.3 sf) 2 — Some of the overflow elevations PMX used in the backwater seem incorrect. They appear to be 12 to 6 inches below the actual rim elevations. We need to review the inputs, determine the lowest CB rim at a node (either the type 2 MH or the type 1 CB in the curb). The model should use actual rim values. The we can evaluate if a water level get close to the rim. City code allows the backwater elevations in an existing system to reach the rim. 3 — I need to review and adjust the basin characteristics, if needed. For the existing conditions I think we can continue to use the G&O basin data. The future conditions the impervious areas seem too high. I may advise revising the percent impervious downward. Also, we probably should use the draft Transportation plans for the future pipe connection size. I'm a bit busy so I may not have all the answers to you this week. I'll be gone at 3 today, and all day Friday. Thanks, Daniel From: Jeffrey Coop [mailto:JCoop@parametrix.com] Sent: Monday, April 19, 2010 6:59 AM To: Daniel W Carey Cc: Julie Brandt; Stuart Currie; Jamee Tate Subject: RE: Lake Avenue: preliminary hydraulics results Daniel: The 24-inch diameter parallel pipe crossing the Seattle water lines has been added to the model. This parallel pipe and using 36-inch diameter pipes in the project area did not make much difference in flooding in upstream Nodes 145A and 140A for the 25-year storm frequency event with future land use. Please give us a call to discuss after you've had a chance to review this info. Thanks! Jeff Jeffrey L. 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Ol A / s N o 0 0 0 0 0 0 O o o 0 0 0 0 o Min Velocity ft/s A iD W A A W Ul N V In W W 00 W W W W o o W W W Max Velocity ft/s imD N W rj w� Ln�� W W a 0.m w 00 0A0 o m rNJ W �'' N V � �D o �D 00 o Design Full Flow 00 W M L, A In 00 lW in V �, W m N 00) O1 0 M W Cf5 00 0) A l0 00 lO N N F-' W N N W N N N N N UU O O UU O O O O �II v A A A N N N N m N F' A W W N N N N lD lO lD lD lD lD lD cO 00 Max Flow cfs lD W A --A00 ! W O W W W W 00 00 Ln In M V N N FZ W W w V1 ZI A V M M J A N o !- o o P o o to �' N N N Max Flow/Design Ln 0 OW � A ^ A A lND : °N' w W o W Flow (fraction) l00 Ln �J-' lO O w lO iD lO o �-' E-' N W W A N to N lj, Ln 01 o V Maximum Water W o v��- Ln 00 v r(.i 0000 rn N 00 N N o Elevation (DS) ft 00 rn 00 00 00 W -4 W Ln N 00 u, Un u, 00 o 0 0 0 0 o W O O o 0 0 o O O O O W O N M N O N In O N A N O N O N N Lu Conduit Slope Ol CO W I--' A -I W A W 0) N (n 0) In W I--' W 0 0 0 0 0 o N o o �-' �' �-' P- '- Max d/D r0 0) 0) A (depth/diameter) 0) N U1 x a N (D N_ O 7 W A ------ ---_- ,1 Y� V ---------- ----- ----- ------------ ------------------ ----------------------- y�� U � �(D o. <;3 3 A I I Wm j C U'I v v W X J 1D 00 0 O U, N N N N F N F N N N N N N N Node Name CO F- (Dp D D D CD D Ln D N of C) D Ln D 0 D vM D 0 D cn D M D V D DO D 0 D Ln D 0 D D D v V W DO W O Ql J N W A 00 0 0 0 DO 0 0 0 0 `J° O Ul o o go o 0 0 c o w Node Inflow ft^3 N D N In N O Ln W M 01 M lD 00 l0 l0 J W W O fV lD W O W O U7 O W O N J W O W F-` W o N PO IV lD fV -I IV a) N Ql N V N V N V N 90 N 00 Ground Elevation � � Ln rj M `JD 00 M oWo 0 `JD M N � 00 --J es- F M F- (Spill Crest) ft N NN O N O N O N N N N N ( 0 W N A N U'7 N Ol N J N J N J N W r,j 0 rj N A -t� 00 W in in M 60 m iD W v vP EGL Elevation ft N In 00 In A M A M N N A In A A lD (n 00 A W W N N O N W (n N M N M F� F� In (n 00 N O W O CD lD '0 t0 O� tD DJ Oo (n W O o O O O O EGL Relative to U"i Q1 W A J 00 J 00 J W M F-� lD W N N F- 00 W Q1 W A 00 In N 10 (n W J O On fJ A M In Ground ft J Ln J M 00 m M �, �, V W k.D 00 00 v, N F' 00 iu 0 0 0 0 P o 00 a Sri W in W in O i0 O O M O 00 O CD O O Freeboard ft co In V V A N W l0 J N N lD rJ J A F-� W In N N N N N F, N N N W A A A vn vn Ln Max Water Depth A V W (n A A N J l0 M N M N A W A W N O W In A W Oo O 0o V N In A Co 0o lD 1-� M N F-' F-� O ft N J W F-� In A F� W C-) In J 00 W N A In A 00 00 lD o lD lD 0 O N I--� N 1-' N N N Uu N W N A N In N P N of N V N V N V N W M a X Water lD J lD lD A l0 NJ lD 00 O lD 00 N F-` LM W" O lD A 01 M 01 A A J J N o . M N O W In O DO In F, In Elevation ft N V O W F-` In A F, W F, In J 00 W N A In A 00 O0 W N W O W W F-' N W fV F-' N W W F-' W N F, U"I W O W N W Q� In O Ul In In 00 W Ql J M J ai an in iQ in uw IV N 'F� 00 A Max Volume ft^3 A W A M rJ F' lD W Ln A W F� W lD lD N (D J J 00 F� A In N J F� LD A W 0 0 0 0 0 0 0 0 O 0 0 0 0 0 0 0 0 0 O 0 Flood Loss ft^3 Duration of 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 o O o 0 0 Flooding (min) sec Q') A N W N (n N In N M N M N In N A Duration of O O o - o 0 0 0 0 0 0 o N �' o - rn �' 00 W Surchar e min g (min) rn W " W w O . w . v . w W �l w sec Max Surface Area W W W W W W W W W W W W W W W W W W W W ft^ 2 J V A 00 a M O CD A Ol N r1jW W A � Volume of User O O O ccW N co 0 o O 0 O O W 0 o O A O O 0 J `DM CDDo Ln Inflow ft^3 W D Ln n In Ql N N N N N co LD 00 W N Volume of Outflow 0 0 00 0 0 0 0 0 0 0 0 0 0 0 o CD 0 0 0 ft^3 N W V (D O 3 W A O m' D rD v IN rn V) v C (-i 0 Ln Uq N r CD D rD w O T C C rD n O C 0- 0 D N I-� O 0 m m (D CD Z O Q ro rD c r+ v, X N rD V) O 75 w 0 r r r r r r r r r r M3 'c r; r- ' r ' r r r r r r Link Name V rn � w N o �D oo J rn A w N N D D Ln Nei N N N N N N N N N N r,, N Diameter (Height) W oo w w w w N it Ln in u, it in in in in in ft N1 N N N I-� F--� N N N N N NI W A A A In In In °N° °J° tj rj Max Depth ft 00 N � � w w w Ln 00 o Ln 00 � m N W A In W F- A 1--' W W (n 00 lD W N A In In W 00 O In A lD P, A N W N, I j O !--' N N O N O N N N Design Velocity 1� N A J 00 W W N M lD (n A lD kD 00 J N A W A lD Ql W LD M 00 lD 00 N 00 00 W N J M A ft/s 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Min Velocity ft/s Ln N 00 A W l!7 N J In W W 00 A W W W N N N NJ F. oo iD o i,, F, m m iD f- w N w w m bo bo iD io Max Velocity ft/s 00 In N W 00 A W 00 UI 00 A In 00 J J J N NJ o rn o J 00 00 o rn N W . lD N" A � O �D 90 o Design Full Flow 00 00 W 00 W A W W In W J J W NI 00 00 N A Ol 00 00 M� 01 00 O1 A W00 00 lD N N cfs N J N N W A N P N N N N N N N 1--� 00 W I--� On F-� 01 01 A F-' A I--' A w N O W A N N N oo 00 in in v, ,-, ,--� =' J 1' 00 Max Flow cfs W F-+ A 00 Cn N lD N LO lD I--� W N N In In F-� Ln 0. 00 Ln I-+ Ol A J J 00 W 00 Q, 00 M W W O O O O N O O F-+ h+ N N N N W N F-+ O Max Flow/Design M !-° O A J w lD A u, J W N A (n O M o00 4ub � W M m J o, o L rn Ln W Flow (fraction) N N N N N N N N N N N N N PO P W. O O N I --I N W W A In P P J J J Maximum Water lD N 00 N W J W W O W lD W I--� to W O IV W A M M M A A J J N O M N O W In O W W Elevation ft In A W J J I--' W Ln W W W N A In W W (DS) p N O O O O O W O O O O O O O O O O w O NJ m N O In O N A O N O N N w Conduit Slope p� 00 lD F- A J W A W M N (n 01 In W I. W N O N O O O o O N O O N N N N N N N N Max d/D O �! O w to Oi Oo N tD tD N to J J lD O O O N N O O W O F� F. A lD N A O lD VI D1 00 00 (depth/diameter) W W W lD J 00 H+ J NJ W A lD F- A Do M IliJ M G 3 W A 0 rD' D rD rD v W Ql Ln v C n O 0 3' oa N .P r d rD D m U.) O T C C rD ri O C Q rr O 7 O O rD v rD G rD 7 I-+ n O O 4 O c 0 X N C rD O w r ai rD D rD N O 3 0 v 0) 0'0 rD Lake Ave S / Rainier Ave S Storm System SWP-27-3529 Potential Replacement of Box Culvert at Rainier Ave with HDPE Pipe inside Box Culvert Backwater Analysis and Comparison October 1, 2012 D. Carey, Surface Water Utility Lake Ave S / Rainier Ave S Storm Project Potential Box Culvert Replacement Alternatives - Using King County Backwater Model New System as Analyzed Run 30 Design Flows per KCBW iteration 36-24-24 Design Flow New 36" to SPU Existing Design Flow Ex. 100 yr New City Location Size Ex. 25-yr _ Fut. 25-yr Pipes Ex. 25-yr Ex. 100-yr Pina tt (in _) (cfsl (cfsl tin.) (cfsl -Fit2s-vr 10/1/12 D. Carey Run Box01-38 Run Box01-33 Replace Box Culvert Replace Box Culvert w/ 38" ID HDPE w/ 33" ID HDPE New in Lake Ave. New Pipes Ex.25-yr Ex.100-yr Pipes Ex.25-yr Ex.100-yr (in.) (cfs) -Fit 2s-vr (in.) (cfs) -Fut.25-vr 1 43x27 28.00 30.00 ok ok ok ok ok ok 2 43x27 28.00 30.00 ok ok ok ok ok ok 3 Box Culv.* 120 22.40 24.00 ok ok 38 ok ok 33 ok ok 4 24 19.65 21.05 36 ok ok 36 ok ok 36 ok ok 5 24 19.65 21.05 36 ok ok 36 ok ok 36 ok ok 6 24 19.6S 21.05 36 ok ok 36 ok ok 36 ok ok 7 24 19.65 21.05 36 ok ok 36 ok ok 36 ok ok 8 24 19.65 21.05 36 ok ok 36 ok ok 36 ok ok 9 SPU Cross 24 16.79 17.99 ex. 24 ok ok ex. 24 ok ok ex. 24 ok ok 10 S 2nd St 24 16.79 17.99 ok ok 24 ok ok 24 ok ok 11 24 14.60 15.65 ok ok 24 ok ok 24 ok ok 12 Lake Ave 24 14.60 15.65 ok ok 24 ok ok 24 ok ok 13 24 14.60 15.65 ok 16.17 24 ok 15.65 24 ok 15.65 14 24 12.70 13.61 ok 14.06 24 ok 13.61 24 ok 13.15 15 24 12.70 13.61 ok 14.06 24 ok 13.61 24 ok 13.15 16 24 12.70 13.61 ok 14.06 24 ok 13.61 24 ok 13.61 17 24 12.70 13.61 ok 13.15 24 ok 13.15 24 ok 13.15 18 24 8.41 9.01 ok 9.01 24 ok 9.01 24 ok 8.71 19 24 8.41 9.01 ok 9.31 24 ok 9.01 24 ok 8.71 * 8' x 10' box culvert modeled as 120-inch pipe (10') ok = No overflow at design event flow rate. *1 Value equals overflow at or above existing 100-year Design Flow. *2 Bold Value equals overflow between ex. 25- and 100-year Design flow. Lake Ave - CITY KCBW Results-02.x1s 150A 100A 95A 79A 0 125 120A 10 South 2nd St 115A SPU Water Mains OA PMX 107A PMX 106A jSouth 3rd St B6x C1,1 Y,LYt- R&ORICr Aye. 3 6-1.4-21 NLL, 3 6 ". M Kccp e�_ ZLi �r s�L� st SWP-27-3529 Lake Ave S / Rainier Ave S Storm Project 5/20/10 lI fl # 1 Prelim Future Storm System Backwater Analysis D.Carey KING COUNTY DEPARTMENT OF NATURAL RESOURCES A 0 Water and Land Resources Division BACKWATER ANALYSIS PROGRAM Version 6.00r Z 57r �. File Opened for Reading:Fut-30pipel.bwp I�pc 13 New 36-inch pipes from Rainier Ave to SPU Crossing: Crossing stays as 24-inch. 36-INCH ., 4ra+t a 0rLt REVIEW OF THE PIPE -DATA film G&O PI OUTLET INLET IN OVERFLO BND STRU Q Node # LENGTH DI TY ELEV ELEV TY KE K M C Y ELEV ANG WIDE RAT 79 1 154.00 36 4 17.26 17.47 8 .50 .0083 2.0 .0496 .57 30.17 0 5.0 0.00 80 2 38.00 36 4 17.37 17.09 8 .50 .0083 2.0 .0496 .57 30.57 45 5.0 0.25 _ 95 3 200.00120 1 17.50 18.19 5 .50 .0098 2.0 .0398 .67 30.25 10 10.0 0.14 �i 100 4 42.00 36 1 18.19 18.47 5 .50 .0098.2.0 .0398 .67 30.27 0 4.0 0.00 105 5 215.00 36 1 18.47 19.00 5 .50 .0098 2.0 .0398 .67 27.56 40 4.0 0.00 106 6 97.00 36 1 19.00 18.64 5 .50 .0098 2.0 .0398 .67 29.39 0 4.0 0.00 107 7 106.00 36 1 18.64 18.72 5 .50 .0098 2.0 .0398 .67 30.97 0 4.0 0.00 Se 110 8 115.00 36 1 18.72 18.84 5 .50 .0098 2.0 .0398 .67 31.48 11 4.0 0.17 115 9 61.00 24 1 18.90 21.08 5 .50 .0098 2.0 .0398 .67 30.78 0 4.0 0.00 Stc41on 120 10 80.00 24 1 21.09 21.11 5 .50 .0098 2.0 .0398 .67 28.83 30 4.0 0.15 125 11 27.00 24 1 21.11 21.18 5 .50 .0098 2.0 .0398 .67 29.19 30 4.0 0.00 130 12 110.00 24 1 21.18 21.64 5 .50 .0098 2.0 .0398 .67 27.97 0 4.0 0.00 - ° k 135 13 178.00 24 1 21.64 21.90 5 .50 .0098 2.0 .0398 .67 26.76 0 4.0 0.15 - Ovc/ 257, 136 14 78.00 24 1 21.90 21.95 5 .50 .0098 2.0 .0398 .67 26.62 0 4.0 0.00 - 14,1 % ZS 137 15 77.00 24 1 21.95 22.14 5 .50 .0098 2.0 .0398 .67 27.29 0 4.0 0.00 138 16 75.00 24 1 22.14 22.14 5 .50 .0098 2.0 .0398 .67 27.87 0 4.0 0.00 140 17 86.00 24 1 22.14 22.34 5 .50 .0098 2.0 .0398 .67 27.51 5 4.0 0.51 - 13,1 worZsl 145 18 145.00 24 1 22.34 22.64 5 .50 .0098 2.0 .0398 .67 28.16 0 4.0 0.00 _ 9 p - 25yr 150 1.9 123.00 24 1 22.64 23.05 5 .50 .0098 2.0 .0398 .67 - 1.3 > 2 S File Opened for Reading:Alt2-36-SPU24.bwp File Opened for Reading:ExTW1.bwt HW/TW Data File:ExTW1.bwt Stage(ft) Discharge(cfs) 1.1 10.00 1.4 15.00 1.7 20.00 2.6 35.00 Zero Stage Elevation:17.09 feet BACKWATER COMPUTER PROGRAM FOR PIPES Pipe data from file:Alt2-36-SPU24.bwp Surcharge condition at intermediate junctions Tailwater from HW/TW File:EXTW1.bwt Discharge Range:24. to 34. Step of 1. [cfs] Overflow Elevation:28.81 feet Weir:NONE Upstream Velocity:0.1 feet/sec Alt2-36-SPU24.doc Page 1 of 8 Prelim Future Conditions Analysis - New pipes from box culvert to south edge of SPU lines to 36". Storm line crossing SPU stays at 24-inch. Design flow for Existing Conditions: from G&O Feb. 2003 Pre -Design Analysis Report At Node 79A: Q 2 year = 19.6 cfs, Q 10 yr = 23.5 cfs, Q 25yr = 27.8 cfs (,2 N 3 01 r 1st iteration, 5th iteration v F�1 2 s O /A jrr��nti PIPE NO. 1: 154 LF-43"X27"CMAP @ 0.14% OUTLET: 17.26 INLET: 17.47 INTYP: 8 JUNC NO. 1: OVERFLOW -EL: 30.17 BEND: 0 DEG DIA/WIDTH: 5.0 Q-RATIO: 0.00 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 24.00 2.89 20.36 * 0.024 1.47 2.25 1.77 1.77 2.60 2.89 1.95 25.00 3.03 20.50 * 0.024 1.51 2.25 1.83 1.83 2.71 3.03 2.02 26.00 3.17 20.64 * 0.024 1.55 2.25 1.89 1.89 2.82 3.17 2.08 27.00 3.32 20.79 * 0.024 1.59 2.25 1.95 1.95 2.94 3.32 2.14 28.00 3.47 20.94 * 0.024 1.63 2.25 2.01 2.01 3.06 3.47 2.21 29.00 3.64 21.11 * 0.024 1.68 2.25 2.07 2.07 3.19 3.64 2.28 30.00 3.82 21.29 * 0.024 1.72 2.25 2.13 2.13 3.34 3.82 2.34 31•.00 4.03 21.50 * 0.024 1.76 2.25 2.19 2.19 3.51 4.03 2.41 32.00 4.32 21.79 * 0.024 1.80 2.25 2.25 2.25 3.76 4.32 2.48 33.00 4.52 21.99 * 0.024 1.84 2.25 2.31 2.31 3.93 4.52 2.55 34.00 4.73 22.20 * 0.024 1.89 2.25 2.37 2.37 4.10 4.73 2.64 PIPE NO. 2: 38 LF-43"X27"CMAP @-0.74% OUTLET: 17.37 INLET: 17.09 INTYP: 8 JUNC NO. 2: OVERFLOW -EL: 30.57 BEND: 45 DEG DIA/WIDTH: 5.0 Q-RATIO: 0.25 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI 24.00 3.84 20.93 * 0.024 1.47 0.00 2.99 2.99 3.51 3.84 2.00 25.00 4.03 21.12 * 0.024 1.51 0.00 3.13 3.13 3.67 4.03 2.07 26.00 4.22 21.31 * 0.024 1.55 0.00 3.27 3.27 3.83 4.22 2.13 27.00 4.42 21.51 * 0.024 1.59 0.00 3.42 3.42 4.00 4.42 2.19 28.00 4.63 21.72 * 0.024 1.63 0.00 3.57 3.57 4.18 4.63 2.26 29.00 4.85 21.94 * 0.024 1.68 0.00 3.74 3.74 4.36 4.85 2.33 30.00 5.09 22.18 * 0.024 1.72 0.00 3.92 3.92 4.57 5.09 2.39 31.00 5.36 22.45 * 0.024 1.76 0.00 4.13 4.13 4.80 5.36 2.46 32.00 5.71 22.80 * 0.024 1.80 0.00 4.42 4.42 5.12 5.71 2.52 33.00 5.98 23.07 * 0.024 1.84 0.00 4.62 4.62 5.35 5.98 2.59 34.00 6.25 23.34 * 0.024 1.89 0.00 4.83 4.83 5.59 6.25 2.69 AIt2-36-SPU24.doc Page 2 of 8 PIPE NO. 3: 200 LF - **"CP @ 0.35% OUTLET: 17.50 INLET: 18.19 INTYP: 5 JUNC NO. 3: OVERFLOW -EL: 30.25 BEND: 10 DEG DIA/WIDTH:10.0 Q-RATIO: 0.14 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 19.20 2.74 20.93 * 0.012 1.01 0.94 3.43 3.43 2.74 2.69 1.25 20.00 2.93 21.12 * 0.012 1.03 0.96 3.62 3.62 2.93 2.87 1.27 20.80 3.12 21.31 * 0.012 1.05 0.98 3.81 3.81 3.12 3.06 1.30 21.60 3.32 21.51 * 0.012 1.07 1.00 4.01 4.01 3.32 3.25 1.32 22.40 3.53 21.72 * 0.012 1.09 1.01 4.22 4.22 3.53 3.45 1.34 23.20 3.75 21.94 * 0.012 1.11 1.03 4.44 4.44 3.75 3.66 1.35 24.00 3.99 22.18 * 0.012 1.13 1.05 4.68 4.68 3.99 3.89 1.37 24.80 4.26 22.45 * 0.012 1.15 1.06 4.95 4.95 4.26 4.15 1.39 25.60 4.61 22.80 * 0.012 1.16 1.08 5.30 5.30 4.61 4.49 1.41 26.40 4.88 23.07 * 0.012 1.18 1.10 5.57 5.57 4.88 4.75 1.42 27.20 5.16 23.35 * 0.012 1.20 1.11 5.84 5.84 5.16 5.02 1.44 PIPE NO. 4: 42 LF - 36"CP @ 0.67% OUTLET: 18.19 INLET: 18.47 INTYP: 5 JUNC NO. 4: OVERFLOW -EL: 30.27 BEND: 0 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.00 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 16.84 2.55 21.02 * 0.012 1.32 1.10 2.74 2.74 2.47 2.55 1.77 17.54 2.74 21.21 * 0.012 1.35 1.13 2.93 2.93 2.67 2.74 1.81 18.25 2.93 21.40 * 0.012 1.37 1.15 3.12 3.12 2.87 2.93 1.85 18.95 3.13 21.60 * 0.012 1.40 1.17 3.32 3.32 3.07 3.13 1.88 19.65 3.34 21.81 * 0.012 1.43 1.20 3.53 3.53 3.28 3.34 1.92 20.35 3.57 22.04 * 0.012 1.45 1.22 3.75 3.75 3.50 3.57 1.96 21.05 3.82 22.29 * 0.012 1.48 1.24 3.99 3.99 3.75 3.82 1.99 21.75 4.09 22.56 * 0.012 1.50 1.27 4.26 4.26 4.02 4.09 2.03 22.46 4.45 22.92 * 0.012 1.53 1.29 4.61 4.61 4.37 4.45 2.06 23.16 4.73 23.20 * 0.012 1.55 1.31 4.88 4.88 4.64 4.73 2.10 23.86 5.02 23.49 * 0.012 1.58 1.33 5.16 5.16 4.93 5.02 2.13 PIPE NO. 5: 215 LF - 36"CP @ 0.25% OUTLET: 18.47 INLET: 19.00 INTYP: 5 JUNC NO. 5: OVERFLOW -EL: 27.56 BEND: 40 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.00 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 16.84 2.29 21.29 * 0.012 1.32 1.45 2.55 2.55 2.12 2.29 1.80 17.54 2.45 21.45 * 0.012 1.35 1.49 2.74 2.74 2.30 2.45 1.84 18.25 2.63 21.63 * 0.012 1.37 1.52 2.93 2.93 2.51 2.63 1.88 18.95 2.84 21.84 * 0.012 1.40 1.55 3.13 3.13 2.73 2.84 1.92 19.65 3.07 22.07 * 0.012 1.43 1.59 3.34 3.34 2.97 3.07 1.96 20.35 3.33 22.33 * 0.012 1.45 1.62 3.57 3.57 3.22 3.33 2.00 21.05 3.58 22.58 * 0.012 1.48 1.66 3.82 3.82 3.47 3.58 2.04 21.75 3.88 22.88 * 0.012 1.50 1.69 4.09 4.09 3.76 3.88 2.08 22.46 4.26 23.26 * 0.012 1.53 1.72 4.45 4.45 4.13 4.26 2.12 23.16 4.56 23.56 * 0.012 1.55 1.76 4.73 4.73 4.42 4.56 2.15 23.86 4.87 23.87 * 0.012 1.58 1.79 5.02 5.02 4.72 4.87 2.19 AIt2-36-SPU24.doc Page 3 of 8 PIPE NO. 6: 97 LF - 36"CP @ -0.37% OUTLET: 19.00 INLET: 18.64 INTYP: 5 JUNC NO. 6: OVERFLOW -EL: 29.39 BEND: 0 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.00 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 16.84 2.80 21.44 * 0.012 1.32 0.00 2.29 2.29 2.74 2.80 1.79 17.54 2.95 21.59 * 0.012 1.35 0.00 2.45 2.45 2.90 2.95 1.82 18.25 3.13 21.77 * 0.012 1.37 0.00 2.63 2.63 3.07 3.13 1.86 18.95 3.33 21.97 * 0.012 1.40 0.00 2.84 2.84 3.27 3.33 1.90 19.65 3.56 22.20 * 0.012 1.43 0.00 3.07 3.07 3.50 3.56 1.94 20.35 3.83 22.47 * 0.012 1.45 0.00 3.33 3.33 3.76 3.83 1.97 21.05 4.10 22.74 * 0.012 1.48 0.00 3.58 3.58 4.03 4.10 2.01 21.75 4.40 23.04 * 0.012 1.50 0.00 3.88 3.88 4.33 4.40 2.04 22.46 4.79 23.43 * 0.012 1.53 0.00 4.26 4.26 4.71 4.79 2.08 23.16 5.10 23.74 * 0.012 1.55 0.00 4.56 4.56 5.02 5.10 2.11 23.86 5.43 24.07 * 0.012 1.58 0.00 4.87 4.87 5.33 5.43 2.14 PIPE NO. 7: 106 LF - 36"CP @ 0.08% OUTLET: 18.64 INLET: 18.72 INTYP: 5 JUNC NO. 7: OVERFLOW -EL: 30.97 BEND: 0 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.00 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 16.84 2.83 21.55 * 0.012 1.32 2.13 2.80 2.80 2.77 2.83 1.78 17.54 2.98 21.70 * 0.012 1.35 2.20 2.95 2.95 2.93 2.98 1.82 18.25 3.17 21.89 * 0.012 1.37 2.27 3.13 3.13 3.12 3.17 1.86 18.95 3.38 22.10 * 0.012 1.40 2.35 3.33 3.33 3.32 3.38 1.89 19.65 3.62 22.34 * 0.012 1.43 2.44 3.56 3.56 3.56 3.62 1.93 20.35 3.90 22.62 * 0.012 1.45 2.54 3.83 3.83 3.83 3.90 1.97 21.05 4.18 22.90 * 0.012 1.48 2.68 4.10 4.10 4.11 4.18 2.00 21.75 4.50 23.22 * 0.012 1.50 3.00 4.40 4.40 4.42 4.50 2.04 22.46 4.90 23.62 * 0.012 1.53 3.00 4.79 4.79 4.82 4.90 2.07 23.16 5.22 23.94 * 0.012 1.55 3.00 5.10 5.10 5.13 5.22 2.10 23.86 5.55 24.27 * 0.012 1.58 3.00 5.43 5.43 5.46 5.55 2.14 PIPE NO. 8: 115 LF - 36"CP @ 0.10% OUTLET: 18.72 INLET: 18.84 INTYP: 5 JUNC NO. 8: OVERFLOW -EL: 31.48 BEND: 11 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.17 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 16.84 2.76 21.60 * 0.012 1.32 1.89 2.83 2.83 2.76 2.64 1.60 17.54 2.93 21.77 * 0.012 1.35 1.95 2.98 2.98 2.93 2.79 1.62 18.25 3.13 21.97 * 0.012 1.37 2.00 3.17 3.17 3.13 2.97 1.65 18.95 3.34 22.18 * 0.012 1.40 2.06 3.38 3.38 3.34 3.17 1.67 19.65 3.59 22.43 * 0.012 1.43 2.11 3.62 3.62 3.59 3.41 1.69 20.35 3.87 22.71 * 0.012 1.45 2.17 3.90 3.90 3.87 3.68 1.70 21.05 4.16 23.00 * 0.012 1.48 2.23 4.18 4.18 4.16 3.95 1.72 21.75 4.48 23.32 * 0.012 1.50 2.30 4.50 4.50 4.48 4.26 1.74 22.46 4.89 23.73 * 0.012 1.53 2.37 4.90 4.90 4.89 4.65 1.75 23.16 5.22 24.06 * 0.012 1.55 2.44 5.22 5.22 5.22 4.97 1.77 23.86 5.56 24.40 * 0.012 1.58 2.53 5.55 5.55 5.56 5.29 1.78 AIt2-36-SPU24.doc Page 4 of 8 r f , PIPE NO. 9: 61 LF - 24"CP @ 3.57% OUTLET: 18.90 INLET: 21.08 INTYP: 5 JUNC NO. 9: OVERFLOW -EL: 30.78 BEND: 0 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.00 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI 14.39 1.83 22.91 * 0.012 1.37 0.77 2.70 2.70 1.37 ***** 1.83 14.99 1.87 22.95 * 0.012 1.40 0.79 2.87 2.87 1.40 ***** 1.87 15.59 1.91 22.99 * 0.012 1.43 0.80 3.07 3.07 1.43 ***** 1.91 16.19 1.96 23.04 * 0.012 1.46 0.82 3.28 3.28 1.46 ***** 1.96 16.79 2.00 23.08 * 0.012 1.48 0.84 3.53 3.53 1.48 ***** 2.00 17.39 2.05 23.13 * 0.012 1.51 0.85 3.81 3.81 1.51 ***** 2.05 17.99 2.11 23.19 * 0.012 1.53 0.87 4.10 4.10 1.53 ***** 2.11 18.59 2.88 23.96 * 0.012 1.56 0.89 4.42 4.42 2.60 2.88 2.16 19.19 3.32 24.40 * 0.012 1.58 0.90 4.83 4.83 3.02 3.32 2.22 19.79 3.70 24.78 * 0.012 1.60 0.92 5.16 5.16 3.38 3.70 2.28 20.39 4.08 25.16 * 0.012 1.63 0.93 5.50 5.50 3.74 4.08 2.34 PIPE NO.10: 80 LF - 24"CP @ 0.03% OUTLET: 21.09 INLET: 21.11 INTYP: 5 JUNC NO.10: OVERFLOW -EL: 28.83 BEND: 30 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.15 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 14.39 2.42 23.53 * 0.012 1.37 2.00 1.82 1.82 2.10 2.42 2.02 14.99 2.50 23.61 * 0.012 1.40 2.00 1.86 1.86 2.15 2.50 2.08 15.59 2.58 23.69 * 0.012 1.43 2.00 1.90 1.90 2.20 2.58 2.13 16.19 2.68 23.79 * 0.012 1.46 2.00 1.95 1.95 2.27 2.68 2.19 16.79 2.78 23.89 * 0.012 1.48 2.00 1.99 1.99 2.34 2.78 2.25 17.39 2.89 24.00 * 0.012 1.51 2.00 2.04 2.04 2.42 2.89 2.31 17.99 3.02 24.13 * 0.012 1.53 2.00 2.10 2.10 2.51 3.02 2.39 18.59 3.85 24.96 * 0.012 1.56 2.00 2.87 2.87 3.31 3.85 2.46 19.19 4.36 25.47 * 0.012 1.58 2.00 3.31 3.31 3.79 4.36 2.53 19.79 4.80 25.91 * 0.012 1.60 2.00 3.69 3.69 4.19 4.80 2.61 20.39 5.26 26.37 * 0.012 1.63 2.00 4.07 4.07 4.61 5.26 2.68 PIPE NO.11: 27 LF - 24"CP @ 0.26% OUTLET: 21.11 INLET: 21.18 INTYP: 5 JUNC NO.11: OVERFLOW -EL: 29.19 BEND: 30 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.00 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 12.52 2.60 23.78 * 0.012 1.28 1.65 2.42 2.42 2.42 2.60 1.78 13.04 2.70 23.88 * 0.012 1.30 1.74 2.50 2.50 2.51 2.70 1.82 13.56 2.80 23.98 * 0.012 1.33 2.00 2.58 2.58 2.59 2.80 1.86 14.08 2.92 24.10 * 0.012 1.36 2.00 2.68 2.68 2.70 2.92 1.90 14.60 3.04 24.22 * 0.012 1.38 2.00 2.78 2.78 2.81 3.04 1.94 15.13 3.18 24.36 * 0.012 1.41 2.00 2.89 2.89 2.92 3.18 1.98 15.65 3.33 24.51 * 0.012 1.43 2.00 3.02 3.02 3.06 3.33 2.02 16.17 4.19 25.37 * 0.012 1.46 2.00 3.85 3.85 3.90 4.19 2.07 16.69 4.73 25.91 * 0.012 1.48 2.00 4.36 4.36 4.42 4.73 2.11 17.21 5.20 26.38 * 0.012 1.50 2.00 4.80 4.80 4.86 5.20 2.15 17.73 5.68 26.86 * 0.012 1.52 2.00 5.26 5.26 5.33 5.68 2.20 AIt2-36-SPU24.doc Page 5 of 8 PIPE NO.12: 110 LF - 24"CP @ 0.42% OUTLET: 21.18 INLET: 21.64 INTYP: 5 JUNC NO.12: OVERFLOW -EL: 27.97 BEND: 0 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.00 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 12.52 2.56 24.20 * 0.012 1.28 1.35 2.60 2.60 2.43 2.56 1.73 13.04 2.69 24.33 * 0.012 1.30 1.39 2.70 2.70 2.55 2.69 1.77 13.56 2.83 24.47 * 0.012 1.33 1.43 2.80 2.80 2.68 2.83 1.81 14.08 2.99 24.63 * 0.012 1.36 1.47 2.92 2.92 2.82 2.99 1.84 14.60 3.15 24.79 * 0.012 1.38 1.52 3.04 3.04 2.98 3.15 1.88 15.13 3.33 24.97 * 0.012 1.41 1.57 3.18 3.18 3.14 3.33 1.91 15.65 3.52 25.16 * 0.012 1.43 1.62 3.33 3.33 3.32 3.52 1.95 16.17 4.43 26.07 * 0.012 1.46 1.68 4.19 4.19 4.21 4.43 1.99 16.69 5.01 26.65 * 0.012 1.48 1.76 4.73 4.73 4.78 5.01 2.02 17.21 5.52 27.16 * 0.012 1.50 2.00 5.20 5.20 5.28 5.52 2.06 17.73 6.05 27.69 * 0.012 1.52 2.00 5.68 5.68 5.79 6.05 2.10 PIPE NO.13: 178 LF - 24"CP @ 0.15% OUTLET: 21.64 INLET: 21.90 INTYP: 5 JUNC NO.13: OVERFLOW -EL: 26.76 BEND: 0 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.15 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 12.52 2.97 24.87 * 0.012 1.28 2.00 2.56 2.56 2.76 2.97 1.81 13.04 3.16 25.06 * 0.012 1.30 2.00 2.69 2.69 2.93 3.16 1.86 13.56 3.36 25.26 * 0.012 1.33 2.00 2.83 2.83 3.11 3.36 1.90 14.08 3.58 25.48 * 0.012 1.36 2.00 2.99 2.99 3.31 3.58 1.95 14.60 3.81 25.71 * 0.012 1.38 2.00 3.15 3.15 3.52 3.81 1.99 15.13 4.05 25.95 * 0.012 1.41 2.00 3.33 3.33 3.74 4.05 2.04 15.65 4..31 26.21 * 0.012 1.43 2.00 3.52 3.52 3.99 4.31 2.08 **************** OVERFLOW ENCOUNTERED AT 16.17 CFS DISCHARGE ***************** ******** OVERFLOW CONDITIONS CALCULATED ASSUMING SURCHARGE CONDITIONS ********* 16.17 5.29 27.19 * 0.012 1.46 2.00 4.43 4.43 4.94 5.29 2.12 16.69 5.94 27.84 * 0.012 1.48 2.00 5.01 5.01 5.57 5.94 2.17 17.21 6.53 28.43 * 0.012 1.50 2.00 5.52 5.52 6.14 6.53 2.22 17.73 7.14 29.04 * 0.012 1.52 2.00 6.05 6.05 6.72 7.14 2.27 PIPE NO.14: 78 LF - 24"CP @ 0.06% OUTLET: 21.90 INLET: 21.95 INTYP: 5 JUNC NO.14: OVERFLOW -EL: 26.62 BEND: 0 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.00 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 10.88 3.17 25.12 * 0.012 1.19 2.00 2.97 2.97 3.08 3.17 1.61 11.34 3.38 25.33 * 0.012 1.21 2.00 3.16 3.16 3.28 3.38 1.64 11.79 3.60 25.55 * 0.012 1.24 2.00 3.36 3.36 3.49 3.60 1.68 12.25 3.85 25.80 * 0.012 1.26 2.00 3.58 3.58 3.72 3.85 1.71 12.70 4.10 26.05 * 0.012 1.29 2.00 3.81 3.81 3.97 4.10 1.75 13.15 4.37 26.32 * 0.012 1.31 2.00 4.05 4.05 4.22 4.37 1.78 13.61 4.65 26.60 * 0.012 1.33 2.00 4.31 4.31 4.50 4.65 1.81 **************** OVERFLOW ENCOUNTERED AT 14.06 CFS DISCHARGE ***************** ******** OVERFLOW CONDITIONS CALCULATED ASSUMING SURCHARGE CONDITIONS ********* 14.06 5.66 27.61 * 0.012 1:36 2.00 5.29 5.29 5.50 5.66 1.84 14.51 6.34 28.29 * 0.012 1.38 2.00 5.94 5.94 6.17 6.34 1.8E 14.97 6.96 28.91 * 0.012 1.40 2.00 6.53 6.53 6.77 6.96 1.91 15.42 7.60 29.55 * 0.012 1.42 2.00 7.14 7.14 7.40 7.60 1.94 AIt2-36-SPU24.doc Page 6 of 8 PIPE NO.15: 77 LF - 24"CP @ 0.25% OUTLET: 21.95 INLET: 22.14 INTYP: 5 JUNC NO.15: OVERFLOW -EL: 27.29 BEND: 0 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.00 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 10.88 3.24 25.38 * 0.012 1.19 1.48 3.17 3.17 3.14 3.24 1.61 11.34 3.46 25.60 * 0.012 1.21 1.53 3.38 3.38 3.36 3.46 1.64 11.79 3.70 25.84 * 0.012 1.24 1.59 3.60 3.60 3.59 3.70 1.68 12.25 3.97 26.11 * 0.012 1.26 1.66 3.85 3.85 3.85 3.97 1.71 12.70 4.25 26.39 * 0.012 1.29 1.73 4.10 4.10 4.12 4.25 1.74 13.15 4.54 26.68 * 0.012 1.31 2.00 4.37 4.37 4.40 4.54 1.78 13.61 4.85 26.99 * 0.012 1.33 2.00 4.65 4.65 4.70 4.85 1.81 **************** OVERFLOW ENCOUNTERED AT 14.06 CFS DISCHARGE ***************** ******** OVERFLOW CONDITIONS CALCULATED ASSUMING SURCHARGE CONDITIONS ********* 14.06 5.88 28.02 * 0.012 1.36 2.00 5.66 5.66 5.72 5.88 1.84 14.51 6.59 28.73 * 0.012 1.38 2.00 6.34 6.34 6.42 6.59 1.87 14.97 7.24 29.38 * 0.012 1.40 2.00 6.96 6.96 7.06 7.24 1.91 15.42 7.91 30.05 * 0.012 1.42 2.00 7.60 7.60 7.71 7.91 1.94 PIPE NO.16: 75 LF - 24"CP @ 0.00% OUTLET: 22.14 INLET: 22.14 INTYP: 5 JUNC NO.16: OVERFLOW -EL: 27.87 BEND: 0 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.00 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 10.88 3.48 25.62 * 0.012 1.19 0.00 3.24 3.24 3.38 3.48 1.61 11.34 3.73 25.87 * 0.012 1.21 0.00 3.46 3.46 3.62 3.73 1.65 11.79 3.99 26.13 * 0.012 1.24 0.00 3.70 3.70 3.88 3.99 1.68 12.25 4.28 26.42 * 0.012 1.26 0.00 3.97 3.97 4.16 4.28 1.71 12.70 4.58 26.72 * 0.012 1.29 0.00 4.25 4.25 4.45 4.58 1.75 13.15 4.90 27.04 * 0.012 1.31 0.00 4.54 4.54 4.76 4.90 1.78 13.61 5.24 27.38 * 0.012 1.33 0.00 4.85 4.85 5.08 5.24 1.81 **************** OVERFLOW ENCOUNTERED AT 14.06 CFS DISCHARGE ***************** ******** OVERFLOW CONDITIONS CALCULATED ASSUMING SURCHARGE CONDITIONS ********* 14.06 6.29 28.43 * 0.012 1.36 0.00 5.88 5.88 6.13 6.29 1.84 14.51 7.03 29.17 * 0.012 1.38 0.00 6.59 6.59 6.86 7.03 1.88 14.97 7.70 29.84 * 0.012 1.40 0.00 7.24 7.24 7.52 7.70 1.91 15.42 8.40 30.54 * 0.012 1.42 0.00 7.91 7.91 8.20 8.40 1.94 PIPE NO.17: 86 LF - 24"CP @ 0.23% OUTLET: 22.14 INLET: 22.34 INTYP: 5 JUNC NO.17: OVERFLOW -EL: 27.51 BEND: 5 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.51 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 10.88 3.69 26.03 * 0.012 1.19 1.52 3.48 3.48 3.46 3.69 1.74 11.34 3.96 26.30 * 0.012 1.21 1.58 3.73 3.73 3.71 3.96 1.79 11.79 4.26 26.60 * 0.012 1.24 1.64 3.99 3.99 3.99 4.26 1.83 12.25 4.59 26.93 * 0.012 1.26 1.72 4.28 4.28 4.30 4.59 1.88 12.70 4.92 27.26 * 0.012 1.29 1.86 4.58 4.58 4.61 4.92 1.92 **************** OVERFLOW ENCOUNTERED AT 13.15 CFS DISCHARGE ***************** ******** OVERFLOW CONDITIONS CALCULATED ASSUMING SURCHARGE CONDITIONS ********* 13.15 5.28 27.62 * 0.012 1.31 2.00 4.90 4.90 4.95 5.28 1.97 13.61 5.66 28.00 * 0.012 1.33 2.00 5.24 5.24 5.30 5.66 2.02 14.06 6.76 29.10 * 0.012 1.36 2.00 6.29 6.29 6.38 6.76 2.06 14.51 7.54 29.88 * 0.012 1.38 2.00 7.03 7.03 7.13 7.54 2.11 14.97 8.26 30.60 * 0.012 1.40 2.00 7.70 7.70 7.82 8.26 2.15 15.42 9.00 31.34 * 0.012 1.42 2.00 8.40 8.40 8.54 9.00 2.20 AIt2-36-SPU24.doc Page 7 of 8 PIPE NO.18: 145 LF - 24"CP @ 0.21% OUTLET: 22.34 INLET: 22.64 INTYP: 5 JUNC NO.18: OVERFLOW -EL: 28.16 BEND: 0 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.00 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 7.21 3.56 26.20 * 0.012 0.96 1.18 3.69 3.69 3.52 3.56 1.29 7.51 3.84 26.48 * 0.012 0.98 1.21 3.96 3.96 3.80 3.84 1.32 7.81 4.16 26.80 * 0.012 1.00 1.24 4.26 4.26 4.11 4.16 1.35 8.11 4.50 27.14 * 0.012 1.02 1.27 4.59 4.59 4.44 4.50 1.38 8.41 4.85 27.49 * 0.012 1.04 1.30 4.92 4.92 4.79 4.85 1.40 8.71 5.22 27.86 * 0.012 1.06 1.34 5.28 5.28 5.16 5.22 1.43 **************** OVERFLOW ENCOUNTERED AT 9.01 CFS DISCHARGE ***************** ******** OVERFLOW CONDITIONS CALCULATED ASSUMING SURCHARGE CONDITIONS ********* 9.01 5.62 28.26 * 0.012 1.08 1.37 5.66 5.66 5.56 5.62 1.45 9.31 6.74 29.38 * 0.012 1.10 1.40 6.76 6.76 6.67 6.74 1.48 9.61 7.53 30.17 * 0.012 1.11 1.44 7.54 7.54 7.46 7.53 1.51 9.91 8.27 30.91 * 0.012 1.13 1.47 8.26 8.26 8.19 8.27 1.53 10.21 9.04 31.68 * 0.012 1.15 1.51 9.00 9.00 8.95 9.04 1.55 PIPE NO.19: 123 LF - 24"CP @ 0.33% OUTLET: 22.64 INLET: 23.05 INTYP: 5 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 7.21 3.38 26.43 * 0.012 0.96 1.02 3.56 3.56 3.26 3.38 1.37 7.51 3.68 26.73 * 0.012 0.98 1.04 3.84 3.84 3.55 3.68 1.41 7.81 4.01 27.06 * 0.012 1.00 1.07 4.16 4.16 3.87 4.01 1.44 8.11 4.38 27.43 * 0.012 1.02 1.09 4.50 4.50 4.22 4.38 1.48 8.41 4.75 27.80 * 0.012 1.04 1.12 4.85 4.85 4.59 4.75 1.51 8.71 5.15 28.20 * 0.012 1.06 1.14 5.22 5.22 4.97 5.15 1.54 9.01 5.57 28.62 * 0.012 1.08 1.16 5.62 5.62 5.38 5.57 1.58 **************** OVERFLOW ENCOUNTERED AT 9.31 CFS DISCHARGE ***************** 9.31 6.71 29.76 * 0.012 1.10 1.19 6.74 6.74 6.51 6.71 1.61 9.61 7.53 30.58 * 0.012 1.11 1.21 7.53 7.53 7.31 7.53 1.65 9.91 8.30 31.35 * 0.012 1.13 1.24 8.27 8.27 8.06 8.30 1.68 10.21 9.09 32.14 * 0.012 1.15 1.26 9.04 9.04 8.84 9.09 1.71 Exit KCBW Program KING COUNTY DEPARTMENT OF NATURAL RESOURCES Water and Land Resources Division BACKWATER ANALYSIS PROGRAM Version 6.00 AIt2-36-SPU24.doc Page 8 of 8 EX. RIM - 2132 Arr31+ 0 150AAIAJAK 00 140A 1.38A 7- y(, 1, west) i� 136A 135A_AH — 2 6. 6 (%fir �s 130A 2 , 9 T j`e - ri 125A OA 115A_AF,- V 3 o. C7yPL 1 C 8 i, T�c — 3 0.9 ? J oJ A 10A 3 1,4 pax S� C6oSS in.1 c>j,;,,c) � 3 C � I � �n ,�,wa�•1 J / Lo-t, �� Nw 105A n I, A_Z,AA,Y 78A 79A 95A_AE J 100A .. 30A _AB ACAP 3 o , 2 S �T��,� (6 -1 I\j w } 30,5� 3o,iZ SWP-27-3529 Lake Ave S / Rainier Ave S Storm Project 9-28-12 Potential Box Culvert Replacement with Pipe - Backwater Analysis D.Carey KING COUNTY DEPARTMENT OF NATURAL RESOURCES Water and Land Resources Division BACKWATER ANALYSIS PROGRAM Version 6.00 File Opened for Reading:Box01-38.bwp REVIEW OF THE PIPE -DATA Pipe# 3: 38-in ID HDPE Pipe #'s are City numbering, see figure. Pipe PI OUTLET INLET IN OVERFLO BND STRU Q # LENGTH DI TY ELEV ELEV TY KE K M C Y ELEV ANG WIDE RAT 1 154.00 36 4 17.26 17.47 8 .50 .0083 2.0 .0496 .57 30.17 0 5.0 0.00 2 38.00 36 4 17.37 17.09 8 .50 .0083 2.0 .0496 .57 30.57 45 5.0 0.25 3 200.00 38 1 17.50 18.19 5 .50 .0098 2.0 .0398 .67 30.25 10 6.0 0.14 4 42.00 36 1 18.19 18.47 5 .50 .0098 2.0 .0398 .67 30.27 0 4.0 0.00 5 215.00 36 1 18.47 19.00 5 .50 .0098 2.0 .0398 .67 27.56 40 4.0 0.00 6 97.00 36 1 19.00 18.64 5 .50 .0098 2.0 .0398 .67 29.39 0 4.0 0.00 7 106.00 36 1 18.64 18.72 5 .50 .0098 2.0 .0398 .67 30.97 0 4.0 0.00 8 115.00 36 1 18.72 18.84 5 .50 .0098 2.0 .0398 .67 31.48 11 4.0 0.17 9 61.00 24 1 18.90 21.08 5 .50 .0098 2.0 .0398 .67 30.78 0 4.0 0.00 10 80.00 24 1 21.09 21.11 5 .50 .0098 2.0 .0398 .67 28.83 30 4.0 0.15 11 27.00 24 1 21.11 21.18 5 .50 .0098 2.0 .0398 .67 29.19 30 4.0 0.00 12 110.00 24 1 21.18 21.64 5 .50 .0098 2.0 .0398 .67 27.97 0 4.0 0.00 13 178.00 24 1 21.64 21.90 5 .50 .0098 2.0 .0398 .67 26.76 0 4.0 0.15 14 78.00 24 1 21.90 21.95 5 .50 .0098 2.0 .0398 .67 26.62 0 4.0 0.00 15 77.00 24 1 21.95 22.14 5 .50 .0098 2.0 .0398 .67 27.29 0 4.0 0.00 16 75.00 24 1 22.14 22.14 5 .50 .0098 2.0 .0398 .67 27.87 0 4.0 0.00 17 86.00 24 1 22.14 22.34 5 .50 .0098 2.0 .0398 .67 27.51 5 4.0 0.51 18 145.00 24 1 22.34 22.64 5 .50 .0098 2.0 .0398 .67 28.16 0 4.0 0.00 19 123.00 24 1 22.64 23.05 5 .50 .0098 2.0 .0398 .67 File Opened for Reading:ExTW1.bwt HW/TW Data File:EXTW1.bwt Stage(ft) Discharge(cfs) 1.1 10.00 1.4 15.00 1.7 20.00 2.6 35.00 Zero Stage Elevation:17.09 feet BACKWATER COMPUTER PROGRAM FOR PIPES Pipe data from file: Box01-38.bwp Surcharge condition at intermediate junctions Tailwater from HW/TW File:EXTW1.bwt Discharge Range:24. to 34. Step of 1. [cfs] Overflow Elevation:28.81 feet Weir:NONE Upstream Velocity:0.1 feet/sec BoxO1-38.doc Page 1 of 8 Replace Box Culvert with new 38" dia HDPE pipe (Pipe No.3) Analysis from west side of Rainier Ave, thru culvert, up Lake Ave S. Storm line crossing SPU stays at 24-inch. Design flow for Existing Conditions: from G&O Feb. 2003 Pre -Design Analysis Report At Node 79A (pipe no.1): Q 2 year = 19.6 cfs, Q 10 yr = 23.5 cfs, Q 25yr = 27.8 cfs Q100 = 30.6cfs 1st iteration, 5th iteration 8th iteration PIPE NO. 1: 154 LF-43"X27"CMAP @ 0.14% OUTLET: 17.26 INLET: 17.47 INTYP: 8 JUNC NO. 1: OVERFLOW -EL: 30.17 BEND: 0 DEG DIA/WIDTH: 5.0 Q-RATIO: 0.00 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* Q10 24.00 2.89 20.36 * 0.024 1.47 2.25 1.77 1.77 2.60 2.89 1.95 25.00 3.03 20.50 * 0.024 1.51 2.25 1.83 1.83 2.71 3.03 2.02 26.00 3.17 20.64 * 0.024 1.55 2.25 1.89 1.89 2.82 3.17 2.08 27.00 3.32 20.79 * 0.024 1.59 2.25 1.95 1.95 2.94 3.32 2.14 Q25 28.00 3.47 20.94 * 0.024 1.63 2.25 2.01 2.01 3.06 3.47 2.21 29.00 3.64 21.11 * 0.024 1.68 2.25 2.07 2.07 3.19 3.64 2.28 30.00 3.82 21.29 * 0.024 1.72 2.25 2.13 2.13 3.34 3.82 2.34 31.00 4.03 21.50 * 0.024 1.76 2.25 2.19 2.19 3.51 4.03 2.41 32.00 4.32 21.79 * 0.024 1.80 2.25 2.25 2.25 3.76 4.32 2.48 33.00 4.52 21.99 * 0.024 1.84 2.25 2.31 2.31 3.93 4.52 2.55 34.00 4.73 22.20 * 0.024 1.89 2.25 2.37 2.37 4.10 4.73 2.64 PIPE NO. 2: 38 LF-43"X27"CMAP @-0.74o OUTLET: 17.37 INLET: 17.09 INTYP: 8 JUNC NO. 2: OVERFLOW -EL: 30.57 BEND: 45 DEG DIA/WIDTH: 5.0 Q-RATIO: 0.25 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 24.00 3.80 20.89 * 0.024 1.47 0.00 2.99 2.99 3.51 3.80 1.96 25.00 3.99 21.08 * 0.024 1.51 0.00 3.13 3.13 3.67 3.99 2.02 26.00 4.17 21.26 * 0.024 1.55 0.00 3.27 3.27 3.83 4.17 2.08 27.00 4.37 21.46 * 0.024 1.59 0.00 3.42 3.42 4.00 4.37 2.14 28.00 4.57 21.66 * 0.024 1.63 0.00 3.57 3.57 4.18 4.57 2.20 29.00 4.79 21.88 * 0.024 1.68 0.00 3.74 3.74 4.36 4.79 2.27 30.00 5.03 22.12 * 0.024 1.72 0.00 3.92 3.92 4.57 5.03 2.33 31.00 5.29 22.38 * 0.024 1.76 0.00 4.13 4.13 4.80 5.29 2.39 32.00 5.64 22.73 * 0.024 1.80 0.00 4.42 4.42 5.12 5.64 2.46 33.00 5.90 22.99 * 0.024 1.84 0.00 4.62 4.62 5.35 5.90 2.52 34.00 6.18 23.27 * 0.024 1.89 0.00 4.83 4.83 5.59 6.18 2.61 Box01-38.doc Page 2 of 8 PIPE NO. 3: 200 LF - 38"CP @ 0.35% OUTLET: 17.50 INLET: 18.19 INTYP: 5 JUNC NO. 3: OVERFLOW -EL: 30.25 BEND: 10 DEG DIA/WIDTH: 6.0 Q-RATIO: 0.14 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 19.20 2.88 21.07 * 0.012 1.39 1.38 3.39 3.39 2.79 2.88 1.89 20.00 3.07 21.26 * 0.012 1.42 1.41 3.58 3.58 2.99 3.07 1.93 20.80 3.28 21.47 * 0.012 1.45 1.44 3.76 3.76 3.20 3.28 1.97 21.60 3.49 21.68 * 0.012 1.47 1.48 3.96 3.96 3.41 3.49 2.01 22.40 3.71 21.90 * 0.012 1.50 1.51 4.16 4.16 3.62 3.71 2.05 23.20 3.94 22.13 * 0.012 1.53 1.54 4.38 4.38 3.85 3.94 2.09 24.00 4.20 22.39 * 0.012 1.56 1.57 4.62 4.62 4.10 4.20 2.13 24.80 4.48 22.67 * 0.012 1.58 1.60 4.88 4.88 4.37 4.48 2.17 25.60 4.84 23.03 * 0.012 1.61 1.63 5.23 5.23 4.73 4.84 2.21 26.40 5.13 23.32 * 0.012 1.64 1.66 5.49 5.49 5.00 5.13 2.24 27.20 5.42 23.61 * 0.012 1.66 1.69 5.77 5.77 5.29 5.42 2.28 PIPE NO. 4: 42 LF - 36"CP @ 0.67% OUTLET: 18.19 INLET: 18.47 INTYP: 5 JUNC NO. 4: OVERFLOW -EL: 30.27 BEND: 0 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.00 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 16.84 2.68 21.15 * 0.012 1.32 1.10 2.88 2.88 2.61 2.68 1.77 17.54 2.87 21.34 * 0.012 1.35 1.13 3.07 3.07 2.81 2.87 1.81 18.25 3.08 21.55 * 0.012 1.37 1.15 3.28 3.28 3.03 3.08 1.85 18.95 3.29 21.76 * 0.012 1.40 1.17 3.49 3.49 3.24 3.29 1.88 19.65 3.52 21.99 * 0.012 1.43 1.20 3.71 3.71 3.46 3.52 1.92 20.35 3.76 22.23 * 0.012 1.45 1.22 3.94 3.94 3.69 3.76 1.96 21.05 4.02 22.49 * 0.012 1.48 1.24 4.20 4.20 3.95 4.02 1.99 21.75 4.31 22.78 * 0.012 1.50 1.27 4.48 4.48 4.24 4.31 2.03 22.46 4.68 23.15 * 0.012 1.53 1.29 4.84 4.84 4.60 4.68 2.06 23.16 4.98 23.45 * 0.012 1.55 1.31 5.13 5.13 4.89 4.98 2.10 23.86 5.28 23.75 * 0.012 1.58 1.33 5.42 5.42 5.18 5.28 2.13 PIPE NO. 5: 215 LF - 36"CP @ 0.25% OUTLET: 18.47 INLET: 19.00 INTYP: 5 JUNC NO. 5: OVERFLOW -EL: 27.56 BEND: 40 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.00 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 16.84 2.39 21.39 * 0.012 1.32 1.45 2.68 2.68 2.24 2.39 1.80 17.54 2.56 21.56 * 0.012 1.35 1.49 2.87 2.87 2.43 2.56 1.84 18.25 2.78 21.78 * 0.012 1.37 1.52 3.08 3.08 2.67 2.78 1.88 18.95 3.00 22.00 * 0.012 1.40 1.55 3.29 3.29 2.91 3.00 1.92 19.65 3.25 22.25 * 0.012 1.43 1.59 3.52 3.52 3.15 3.25 1.96 20.35 3.51 22.51 * 0.012 1.45 1.62 3.76 3.76 3.40 3.51 2.00 21.05 3.79 22.79 * 0.012 1.48 1.66 4.02 4.02 3.68 3.79 2.04 21.75 4.10 23.10 * 0.012 1.50 1.69 4.31 4.31 3.98 4.10 2.08 22.46 4.49 23.49 * 0.012 1.53 1.72 4.68 4.68 4.36 4.49 2.12 23.16 4.80 23.80 * 0.012 1.55 1.76 4.98 4.98 4.67 4.80 2.15 23.86 5.13 24.13 * 0.012 1.58 1.79 5.28 5.28 4.98 5.13 2.19 Box01-38.doc Page 3 of 8 PIPE NO. 6: 97 LF - 36"CP @ -0.37o OUTLET: 19.00 INLET: 18.64 INTYP: 5 JUNC NO. 6: OVERFLOW -EL: 29.39 BEND: 0 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.00 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 16.84 2.88 21.52 * 0.012 1.32 0.00 2.39 2.39 2.83 2.88 1.79 17.54 3.05 21.69 * 0.012 1.35 0.00 2.56 2.56 3.00 3.05 1.82 18.25 3.26 21.90 * 0.012 1.37 0.00 2.78 2.78 3.21 3.26 1.86 18.95 3.49 22.13 * 0.012 1.40 0.00 3.00 3.00 3.43 3.49 1.90 19.65 3.74 22.38 * 0.012 1.43 0.00 3.25 3.25 3.68 3.74 1.94 20.35 4.01 22.65 * 0.012 1.45 0.00 3.51 3.51 3.94 4.01 1.97 21.05 4.30 22.94 * 0.012 1.48 0.00 3.79 3.79 4.23 4.30 2.01 21.75 4.62 23.26 * 0.012 1.50 0.00 4.10 4.10 4.55 4.62 2.04 22.46 5.03 23.67 * 0.012 1.53 0.00 4.49 4.49 4.94 5.03 2.08 23.16 5.35 23.99 * 0.012 1.55 0.00 4.80 4.80 5.26 5.35 2.11 23.86 5.68 24.32 * 0.012 1.58 0.00 5.13 5.13 5.59 5.68 2.14 PIPE NO. 7: 106 LF - 36"CP @ 0.08% OUTLET: 18.64 INLET: 18.72 INTYP: 5 JUNC NO. 7: OVERFLOW -EL: 30.97 BEND: 0 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.00 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 16.84 2.90 21.62 * 0.012 1.32 2.13 2.88 2.88 2.85 2.90 1.78 17.54 3.08 21.80 * 0.012 1.35 2.20 3.05 3.05 3.03 3.08 1.82 18.25 3.30 22.02 * 0.012 1.37 2.27 3.26 3.26 3.25 3.30 1.86 18.95 3.54 22.26 * 0.012 1.40 2.35 3.49 3.49 3.48 3.54 1.89 19.65 3.80 22.52 * 0.012 1.43 2.44 3.74 3.74 3.74 3.80 1.93 20.35 4.08 22.80 * 0.012 1.45 2.54 4.01 4.01 4.01 4.08 1.97 21.05 4.39 23.11 * 0.012 1.48 2.68 4.30 4.30 4.31 4.39 2.00 21.75 4.71 23.43 * 0.012 1.50 3.00 4.62 4.62 4.64 4.71 2.04 22.46 5.13 23.85 * 0.012 1.53 3.00 5.03 5.03 5.05 5.13 2.07 23.16 5.47 24.19 * 0.012 1.55 3.00 5.35 5.35 5.38 5.47 2.10 23.86 5.81 24.53 * 0.012 1.58 3.00 5.68 5.68 5.72 5.81 2.14 PIPE NO. 8: 115 LF - 36"CP @ 0.10% OUTLET: 18.72 INLET: 18.84 INTYP: 5 JUNC NO. 8: OVERFLOW -EL: 31.48 BEND: 11 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.17 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 16.84 2.84 21.68 * 0.012 1.32 1.89 2.90 2.90 2.84 2.71 1.60 17.54 3.03 21.87 * 0.012 1.35 1.95 3.08 3.08 3.03 2.89 1.62 18.25 3.25 22.09 * 0.012 1.37 2.00 3.30 3.30 3.25 3.10 1.65 18.95 3.50 22.34 * 0.012 1.40 2.06 3.54 3.54 3.50 3.33 1.67 19.65 3.77 22.61 * 0.012 1.43 2.11 3.80 3.80 3.77 3.59 1.69 20.35 4.05 22.89 * 0.012 1.45 2.17 4.08 4.08 4.05 3.86 1.70 21.05 4.36 23.20 * 0.012 1.48 2.23 4.39 4.39 4.36 4.16 1.72 21.75 4.70 23.54 * 0.012 1.50 2.30 4.71 4.71 4.70 4.48 1.74 22.46 5.12 23.96 * 0.012 1.53 2.37 5.13 5.13 5.12 4.89 1.75 23.16 5.46 24.30 * 0.012 1.55 2.44 5.47 5.47 5.46 5.21 1.77 23.86 5.82 24.66 * 0.012 1.58 2.53 5.81 5.81 5.82 5.55 1.78 Box01-38.doc Page 4 of 8 PIPE NO. 9: 61 LF - 24"CP @ 3.57% OUTLET: 18.90 INLET: 21.08 INTYP: 5 JUNC NO. 9: OVERFLOW -EL: 30.78 BEND: 0 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.00 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 14.39 1.83 22.91 * 0.012 1.37 0.77 2.78 2.78 1.37 ***** 1.83 14.99 1.87 22.95 * 0.012 1.40 0.79 2.97 2.97 1.40 ***** 1.87 15.59 1.91 22.99 * 0.012 1.43 0.80 3.19 3.19 1.43 ***** 1.91 16.19 1.96 23.04 * 0.012 1.46 0.82 3.44 3.44 1.46 ***** 1.96 16.79 2.00 23.08 * 0.012 1.48 0.84 3.71 3.71 1.48 ***** 2.00 17.39 2.05 23.13 * 0.012 1.51 0.85 3.99 3.99 1.51 ***** 2.05 17.99 2.73 23.81 * 0.012 1.53 0.87 4.30 4.30 2.46 2.73 2.11 18.59 3.09 24.17 * 0.012 1.56 0.89 4.64 4.64 2.81 3.09 2.16 19.19 3.56 24.64 * 0.012 1.58 0.90 5.06 5.06 3.26 3.56 2.22 19.79 3.94 25.02 * 0.012 1.60 0.92 5.40 5.40 3.62 3.94 2.28 20.39 4.34 25.42 * 0.012 1.63 0.93 5.76 5.76 4.00 4.34 2.34 PIPE NO.10: 80 LF - 24"CP @ 0.03% OUTLET: 21.09 INLET: 21.11 INTYP: 5 JUNC NO.10: OVERFLOW -EL: 28.83 BEND: 30 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.15 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 14.39 2.42 23.53 * 0.012 1.37 2.00 1.82 1.82 2.10 2.42 2.02 14.99 2.50 23.61 * 0.012 1.40 2.00 1.86 1.86 2.15 2.50 2.08 15.59 2.58 23.69 * 0.012 1.43 2.00 1.90 1.90 2.20 2.58 2.13 16.19 2.68 23.79 * 0.012 1.46 2.00 1.95 1.95 2.27 2.68 2.19 16.79 2.78 23.89 * 0.012 1.48 2.00 1.99 1.99 2.34 2.78 2.25 17.39 2.89 24.00 * 0.012 1.51 2.00 2.04 2.04 2.42 2.89 2.31 17.99 3.63 24.74 * 0.012 1.53 2.00 2.72 2.72 3.13 3.63 2.39 18.59 4.06 25.17 * 0.012 1.56 2.00 3.08 3.08 3.52 4.06 2.46 19.19 4.59 25.70 * 0.012 1.58 2.00 3.55 3.55 4.02 4.59 2.53 19.79 5.05 26.16 * 0.012 1.60 2.00 3.93 3.93 4.43 5.05 2.61 20.39 5.51 26.62 * 0.012 1.63 2.00 4.33 4.33 4.86 5.51 2.68 PIPE NO.11: 27 LF - 24"CP @ 0.26% OUTLET: 21.11 INLET: 21.18 INTYP: 5 JUNC NO.11: OVERFLOW -EL: 29.19 BEND: 30 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.00 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 12.52 2.60 23.78 * 0.012 1.28 1.65 2.42 2.42 2.42 2.60 1.78 13.04 2.70 23.88 * 0.012 1.30 1.74 2.50 2.50 2.51 2.70 1.82 13.56 2.80 23.98 * 0.012 1.33 2.00 2.58 2.58 2.59 2.80 1.86 14.08 2.92 24.10 * 0.012 1.36 2.00 2.68 2.68 2.70 2.92 1.90 14.60 3.04 24.22 * 0.012 1.38 2.00 2.78 2.78 2.81 3.04 1.94 15.13 3.18 24.36 * 0.012 1.41 2.00 2.89 2.89 2.92 3.18 1.98 15.65 3.95 25.13 * 0.012 1.43 2.00 3.63 3.63 3.67 3.95 2.02 16.17 4.40 25.58 * 0.012 1.46 2.00 4.06 4.06 4.11 4.40 2.07 16.69 4.96 26.14 * 0.012 1.48 2.00 4.59 4.59 4.65 4.96 2.11 17.21 5.44 26.62 * 0.012 1.50 2.00 5.05 5.05 5.11 5.44 2.15 17.73 5.94 27.12 * 0.012 1.52 2.00 5.51 5.51 5.59 5.94 2.20 Box01-38.doc Page 5 of 8 PIPE NO.12: 110 LF - 24"CP @ 0.42% OUTLET: 21.18 INLET: 21.64 INTYP: 5 JUNC NO.12: OVERFLOW -EL: 27.97 BEND: 0 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.00 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI 12.52 2.56 24.20 * 0.012 1.28 1.35 2.60 2.60 2.43 2.56 1.73 13.04 2.69 24.33 * 0.012 1.30 1.39 2.70 2.70 2.55 2.69 1.77 13.56 2.83 24.47 * 0.012 1.33 1.43 2.80 2.80 2.68 2.83 1.81 14.08 2.99 24.63 * 0.012 1.36 1.47 2.92 2.92 2.82 2.99 1.84 14.60 3.15 24.79 * 0.012 1.38 1.52 3.04 3.04 2.98 3.15 1.88 15.13 3.33 24.97 * 0.012 1.41 1.57 3.18 3.18 3.14 3.33 1.91 15.65 4.14 25.78 * 0.012 1.43 1.62 3.95 3.95 3.93 4.14 1.95 16.17 4.64 26.28 * 0.012 1.46 1.68 4.40 4.40 4.42 4.64 1.99 16.69 5.24 26.88 * 0.012 1.48 1.76 4.96 4.96 5.01 5.24 2.02 17.21 5.77 27.41 * 0.012 1.50 2.00 5.44 5.44 5.52 5.77 2.06 17.73 6.31 27.95 * 0.012 1.52 2.00 5.94 5.94 6.05 6.31 2.10 PIPE NO.13: 178 LF - 24"CP @ 0.15% OUTLET: 21.64 INLET: 21.90 INTYP: 5 JUNC NO.13: OVERFLOW -EL: 26.76 BEND: 0 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.15 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 12.52 2.97 24.87 * 0.012 1.28 2.00 2.56 2.56 2.76 2.97 1.81 13.04 3.16 25.06 * 0.012 1.30 2.00 2.69 2.69 2.93 3.16 1.86 13.56 3.36 25.26 * 0.012 1.33 2.00 2.83 2.83 3.11 3.36 1.90 14.08 3.58 25.48 * 0.012 1.36 2.00 2.99 2.99 3.31 3.58 1.95 14.60 3.81 25.71 * 0.012 1.38 2.00 3.15 3.15 3.52 3.81 1.99 15.13 4.05 25.95 * 0.012 1.41 2.00 3.33 3.33 3.74 4.05 2.04 **************** OVERFLOW ENCOUNTERED AT 15.65 CFS DISCHARGE ***************** ******** OVERFLOW CONDITIONS CALCULATED ASSUMING SURCHARGE CONDITIONS ********* 15.65 4.93 26.83 * 0.012 1.43 2.00 4.14 4.14 4.60 4.93 2.08 16.17 5.50 27.40 * 0.012 1.46 2.00 4.64 4.64 5.15 5.50 2.12 16.69 6.18 28.08 * 0.012 1.48 2.00 5.24 5.24 5.80 6.18 2.17 17.21 6.78 28.68 * 0.012 1.50 2.00 5.77 5.77 6.38 6.78 2.22 17.73 7.40 29.30 * 0.012 1.52 2.00 6.31 6.31 6.98 7.40 2.27 PIPE NO.14: 78 LF - 24"CP @ 0.06% OUTLET: 21.90 INLET: 21.95 INTYP: 5 JUNC NO.14: OVERFLOW -EL: 26.62 BEND: 0 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.00 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 10.88 3.17 25.12 * 0.012 1.19 2.00 2.97 2.97 3.08 3.17 1.61 11.34 3.38 25.33 * 0.012 1.21 2.00 3.16 3.16 3.28 3.38 1.64 11.79 3.60 25.55 * 0.012 1.24 2.00 3.36 3.36 3.49 3.60 1.68 12.25 3.85 25.80 * 0.012 1.26 2.00 3.58 3.58 3.72 3.85 1.71 12.70 4.10 26.05 * 0.012 1.29 2.00 3.81 3.81 3.97 4.10 1.75 13.15 4.37 26.32 * 0.012 1.31 2.00 4.05 4.05 4.22 4.37 1.78 **************** OVERFLOW ENCOUNTERED AT 13.61 CFS DISCHARGE ***************** ******** OVERFLOW CONDITIONS CALCULATED ASSUMING SURCHARGE CONDITIONS ********* 13.61 5.27 27.22 * 0.012 1.33 2.00 4.93 4.93 5.12 5.27 1.81 14.06 5.87 27.82 * 0.012 1.36 2.00 5.50 5.50 5.71 5.87 1.84 14.51 6.57 28.52 * 0.012 1.38 2.00 6.18 6.18 6.40 6.57 1.88 14.97 7.20 29.15 * 0.012 1.40 2.00 6.78 6.78 7.02 7.20 1.91 15.42 7.86 29.81 * 0.012 1.42 2.00 7.40 7.40 7.66 7.86 1.94 Box01-38.doc Page 6 of 8 PIPE NO.15: 77 LF - 24"CP @ 0.25% OUTLET: 21.95 INLET: 22.14 INTYP: 5 JUNC NO.15: OVERFLOW -EL: 27.29 BEND: 0 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.00 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 10.88 3.24 25.38 * 0.012 1.19 1.48 3.17 •3.17 3.14 3.24 1.61 11.34 3.46 25.60 * 0.012 1.21 1.53 3.38 3.38 3.36 3.46 1.64 11.79 3.70 25.84 * 0.012 1.24 1.59 3.60 3.60 3.59 3.70 1.68 12.25 3.97 26.11 * 0.012 1.26 1.66 3.85 3.85 3.85 3.97 1.71 12.70 4.25 26.39 * 0.012 1.29 1.73 4.10 4.10 4.12 4.25 1.74 13.15 4.54 26.68 * 0.012 1.31 2.00 4.37 4.37 4.40 4.54 1.78 **************** OVERFLOW ENCOUNTERED AT 13.61 CFS DISCHARGE ***************** ******** OVERFLOW CONDITIONS CALCULATED ASSUMING SURCHARGE CONDITIONS ********* 13.61 5.47 27.61 * 0.012 1.33 2.00 5.27 5.27 5.32 5.47 1.81 14.06 6.09 28.23 * 0.012 1.36 2.00 5.87 5.87 5.93 6.09 1.84 14.51 6.82 28.96 * 0.012 1.38 2.00 6.57 6.57 6.65 6.82 1.87 14.97 7.48 29.62 * 0.012 1.40 2.00 7.20 7.20 7.30 7.48 1.91 15.42 8.17 30.31 * 0.012 1.42 2.00 7.86 7.86 7.97 8.17 1.94 PIPE NO.16: 75 LF - 24"CP @ 0.00% OUTLET: 22.14 INLET: 22.14 INTYP: 5 JUNC NO.16: OVERFLOW -EL: 27.87 BEND: 0 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.00 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 10.88 3.48 25.62 * 0.012 1.19 0.00 3.24 3.24 3.38 3.48 1.61 11.34 3.73 25.87 * 0.012 1.21 0.00 3.46 3.46 3.62 3.73 1.65 11.79 3.99 26.13 * 0.012 1.24 0.00 3.70 3.70 3.88 3.99 1.68 12.25 4.28 26.42 * 0.012 1.26 0.00 3.97 3.97 4.16 4.28 1.71 12.70 4.58 26.72 * 0.012 1.29 0.00 4.25 4.25 4.45 4.58 1.75 13.15 4.90 27.04 * 0.012 1.31 0.00 4.54 4.54 4.76 4.90 1.78 **************** OVERFLOW ENCOUNTERED AT 13.61 CFS DISCHARGE ***************** ******** OVERFLOW CONDITIONS CALCULATED ASSUMING SURCHARGE CONDITIONS ********* 13.61 5.85 27.99 * 0.012 1.33 0.00 5.47 5.47 5.70 5.85 1.81 14.06 6.50 28.64 * 0.012 1.36 0.00 6.09 6.09 6.34 6.50 1.84 14.51 7.26 29.40 * 0.012 1.38 0.00 6.82 6.82 7.09 7.26 1.88 14.97 7.95 30.09 * 0.012 1.40 0.00 7.48 7.48 7.76 7.95 1.91 15.42 8.66 30.80 * 0.012 1.42 0.00 8.17 8.17 8.46 8.66 1.94 PIPE NO.17: 86 LF - 24"CP @ 0.23% OUTLET: 22.14 INLET: 22.34 INTYP: 5 JUNC NO.17: OVERFLOW -EL: 27.51 BEND: 5 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.51 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 10.88 3.69 26.03 * 0.012 1.19 1.52 3.48 3.48 3.46 3.69 1.74 11.34 3.96 26.30 * 0.012 1.21 1.58 3.73 3.73 3.71 3.96 1.79 11.79 4.26 26.60 * 0.012 1.24 1.64 3.99 3.99 3.99 4.26 1.83 12.25 4.59 26.93 * 0.012 1.26 1.72 4.28 4.28 4.30 4.59 1.88 12.70 4.92 27.26 * 0.012 1.29 1.86 4.58 4.58 4.61 4.92 1.92 **************** OVERFLOW ENCOUNTERED AT 13.15 CFS DISCHARGE ***************** ******** OVERFLOW CONDITIONS CALCULATED ASSUMING SURCHARGE CONDITIONS ********* 13.15 5.28 27.62 * 0.012 1.31 2.00 4.90 4.90 4.95 5.28 1.97 13.61 6.27 28.61 * 0.012 1.33 2.00 5.85 5.85 5.92 6.27 2.02 14.06 6.97 29.31 * 0.012 1.36 2.00 6.50 6.50 6.59 6.97 2.06 14.51 7.77 30.11 * 0.012 1.38 2.00 7.26 7.26 7.36 7.77 2.11 14.97 8.50 30.84 * 0.012 1.40 2.00 7.95 7.95 8.07 8.50 2.15 15.42 9.26 31.60 * 0.012 1.42 2.00 8.66 8.66 8.80 9.26 2.20 Box01-38.doc Page 7 of 8 PIPE NO.18: 145 LF - 24"CP @ 0.21% OUTLET: 22.34 INLET: 22.64 INTYP: 5 JUNC NO.18: OVERFLOW -EL: 28.16 BEND: 0 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.00 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 7.21 3.56 26.20 * 0.012 0.96 1.18 3.69 3.69 3.52 3.56 1.29 7.51 3.84 26.48 * 0.012 0.98 1.21 3.96 3.96 3.80 3.84 1.32 7.81 4.16 26.80 * 0.012 1.00 1.24 4.26 4.26 4.11 4.16 1.35 8.11 4.50 27.14 * 0.012 1.02 1.27 4.59 4.59 4.44 4.50 1.38 8.41 4.85 27.49 * 0.012 1.04 1.30 4.92 4.92 4.79 4.85 1.40 8.71 5.22 27.86 * 0.012 1.06 1.34 5.28 5.28 5.16 5.22 1.43 **************** OVERFLOW ENCOUNTERED AT 9.01 CFS DISCHARGE ***************** ******** OVERFLOW CONDITIONS CALCULATED ASSUMING SURCHARGE CONDITIONS ********* 9.01 6.24 28.88 * 0.012 1.08 1.37 6.27 6.27 6.17 6.24 1.45 9.31 6.95 29.59 * 0.012 1.10 1.40 6.97 6.97 6.88 6.95 1.48 9.61 7.77 30.41 * 0.012 1.11 1.44 7.77 7.77 7.69 7.77 1.51 9.91 8.52 31.16 * 0.012 1.13 1.47 8.50 8.50 8.44 8.52 1.53 10.21 9.29 31.93 * 0.012 1.15 1.51 9.26 9.26 9.21 9.29 1.55 PIPE NO.19: 123 LF - 24"CP @ 0.33% OUTLET: 22.64 INLET: 23.05 INTYP: 5 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 7.21 3.38 26.43 * 0.012 0.96 1.02 3.56 3.56 3.26 3.38 1.37 7.51 3.68 26.73 * 0.012 0.98 1.04 3.84 3.84 3.55 3.68 1.41 7.81 4.01 27.06 * 0.012 1.00 1.07 4.16 4.16 3.87 4.01 1.44 8.11 4.38 27.43 * 0.012 1.02 1.09 4.50 4.50 4.22 4.38 1.48 8.41 4.75 27.80 * 0.012 1.04 1.12 4.85 4.85 4.59 4.75 1.51 8.71 5.15 28.20 * 0.012 1.06 1.14 5.22 5.22 4.97 5.15 1.54 **************** OVERFLOW ENCOUNTERED AT 9.01 CFS DISCHARGE ***************** 9.01 6.18 29.23 * 0.012 1.08 1.16 6.24 6.24 5.99 6.18 1.58 9.31 6.92 29.97 * 0.012 1.10 1.19 6.95 6.95 6.72 6.92 1.61 9.61 7.76 30.81 * 0.012 1.11 1.21 7.77 7.77 7.55 7.76 1.65 9.91 8.54 31.59 * 0.012 1.13 1.24 8.52 8.52 8.31 8.54 1.68 10.21 9.34 32.39 * 0.012 1.15 1.26 9.29 9.29 9.10 9.34 1.71 Exit KCBW Program KING COUNTY DEPARTMENT OF NATURAL RESOURCES Water and Land Resources Division BACKWATER ANALYSIS PROGRAM Version 6.00 Box01-38.doc Page 8 of 8 150A 79A L 100A 95A 125 it 120A 1 South end St 115A _r, SPU Water Mains PMX 107A PMX 106A CJ, KC�W PI Pe. #'s jSouth 3rd St BGX �kI V(�Y i- RG1'(� t, Ave- SWP-27-3529 Lake Ave S / Rainier Ave S Storm Project Potential Box Culvert Replacement with Pipe - Backwater Analysis KING COUNTY DEPARTMENT OF NATURAL RESOURCES Water and Land Resources Division BACKWATER ANALYSIS PROGRAM Version 6.00 File Opened for Reading: Box01-33.bwp REVIEW OF THE PIPE -DATA Pipe# 3: 33-in ID HDPE Pipe #'s are City numbering, see figure. Pipe PI OUTLET # LENGTH DI TY ELEV 1 154.00 36 4 17.26 2 38.00 36 4 17.37 3 200.00 33 1 17.50 4 42.00 36 1 18.19 5 215.00 36 1 18.47 6 97.00 36 1 19.00 7 106.00 36 1 18.64 8 115.00 36 1 18.72 9 61.00 24 1 18.90 10 80.00 24 1 21.09 11 27.00 24 1 21.11 12 110.00 24 1 21.18 13 178.00 24 1 21.64 14 78.00 24 1 21.90 15 77.00 24 1 21.95 16 75.00 24 1 22.14 17 86.00 24 1 22.14 18 145.00 24 1 22.34 19 123.00 24 1 22.64 INLET ELEV 17.47 17.09 18.19 18.47 19.00 18.64 18.72 18.84 21.08 21.11 21.18 21.64 21.90 21.95 22.14 22.14 22.34 22.64 23.05 IN TY KE K M C Y 8 .50 .0083 2.0 .0496 .57 8 .50 .0083 2.0 .0496 .57 5 .50 .0098 2.0 .0398 .67 5 .50 .0098 2.0 .0398 .67 5 .50 .0098 2.0 .0398 .67 5 .50 .0098 2.0 .0398 .67 5 .50 .0098 2.0 .0398 .67 5 .50 .0098 2.0 .0398 .67 5 .50 .0098 2.0 .0398 .67 5 .50 .0098 2.0 .0398 .67 5 .50 .0098 2.0 .0398 .67 5 .50 .0098 2.0 .0398 .67 5 .50 .0098 2.0 .0398 .67 5 .50 .0098 2.0 .0398 .67 5 .50 .0098 2.0 .0398 .67 5 .50 .0098 2.0 .0398 .67 5 .50 .0098 2.0 .0398 .67 5 .50 .0098 2.0 .0398 .67 5 .50 .0098 2.0 .0398 .67 File Opened for Reading:ExTW1.bwt HW/TW Data File:EXTW1.bwt Stage(ft) Discharge(cfs) 1.1 10.00 1.4 15.00 1.7 20.00 2.6 35.00 Zero Stage Elevation:17.09 feet BACKWATER COMPUTER PROGRAM FOR PIPES Pipe data from file: Box01-33.bwp Surcharge condition at intermediate junctions Tailwater from HW/TW File:EXTW1.bwt OVERFLO BND STRU Q ELEV ANG WIDE RAT 30.17 0 5.0 0.00 30.57 45 5.0 0.25 30.25 10 6.0 0.14 30.27 0 4.0 0.00 27.56 40 4.0 0.00 29.39 0 4.0 0.00 30.97 0 4.0 0.00 31.48 11 4.0 0.17 30.78 0 4.0 0.00 28.83 30 4.0 0.15 29.19 30 4.0 0.00 27.97 0 4.0 0.00 26.76 0 4.0 0.15 26.62 0 4.0 0.00 27.29 0 4.0 0.00 27.87 0 4.0 0.00 27.51 5 4.0 0.51 28.16 0 4.0 0.00 Discharge Range:24. to 34. Step of 1. [cfs] Overflow Elevation:28.81 feet Weir:NONE Upstream Velocity:0.1 feet/sec 9-28-12 D.Carey Box01-33.doc Page 1 of 8 Replace Box Culvert with new 33" dia HDPE pipe (Pipe No.3) Analysis from west side of Rainier Ave, thru culvert, up Lake Ave S. Storm line crossing SPU stays at 24-inch. Design flow for Existing Conditions: from G&O Feb. 2003 Pre -Design Analysis Report At Node 79A (pipe no.1): Q 2 year = 19.6 cfs, Q 10 yr = 23.5 cfs, Q 25yr = 27.8 cfs Q100 = 30.6cfs 1st iteration, 5th iteration 8th iteration PIPE NO. 1: 154 LF-43"X27"CMAP @ 0.14% OUTLET: 17.26 INLET: 17.47 INTYP: 8 JUNC NO. l: OVERFLOW -EL: 30.17 BEND: 0 DEG DIA/WIDTH: 5.0 Q-RATIO: 0.00 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* Q10 24.00 2.89 20.36 * 0.024 1.47 2.25 1.77 1.77 2.60 2.89 1.95 25.00 3.03 20.50 * 0.024 1.51 2.25 1.83 1.83 2.71 3.03 2.02 26.00 3.17 20.64 * 0.024 1.55 2.25 1.89 1.89 2.82 3.17 2.08 27.00 3.32 20.79 * 0.024 1.59 2.25 1.95 1.95 2.94 3.32 2.14 Q25 28.00 3.47 20.94 * 0.024 1.63 2.25 2.01 2.01 3.06 3.47 2.21 29.00 3.64 21.11 * 0.024 1.68 2.25 2.07 2.07 3.19 3.64 2.28 30.00 3.82 21.29 * 0.024 1.72 2.25 2.13 2.13 3.34 3.82 2.34 31.00 4.03 21.50 * 0.024 1.76 2.25 2.19 2.19 3.51 4.03 2.41 32.00 4.32 21.79 * 0.024 1.80 2.25 2.25 2.25 3.76 4.32 2.48 33.00 4.52 21.99 * 0.024 1.84 2.25 2.31 2.31 3.93 4.52 2.55 34.00 4.73 22.20 * 0.024 1.89 2.25 2.37 2.37 4.10 4.73 2.64 PIPE NO. 2: 38 LF-43"X27"CMAP @-0.74% OUTLET: 17.37 INLET: 17.09 INTYP: 8 JUNC NO. 2: OVERFLOW -EL: 30.57 BEND: 45 DEG DIA/WIDTH: 5.0 Q-RATIO: 0.25 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 24.00 3.77 20.86 * 0.024 1.47 0.00 2.99 2.99 3.51 3.77 1.93 25.00 3.95 21.04 * 0.024 1.51 0.00 3.13 3.13 3.67 3.95 1.99 26.00 4.14 21.23 * 0.024 1.55 0.00 3.27 3.27 3.83 4.14 2.05 27.00 4.33 21.42 * 0.024 1.59 0.00 3.42 3.42 4.00 4.33 2.11 28.00 4.53 21.62 * 0.024 1.63 0.00 3.57 3.57 4.18 4.53 2.16 29.00 4.75 21.84 * 0.024 1.68 0.00 3.74 3.74 4.36 4.75 2.23 30.00 4.98 22.07 * 0.024 1.72 0.00 3.92 3.92 4.57 4.98 2.28 31.00 5.24 22.33 * 0.024 1.76 0.00 4.13 4.13 4.80 5.24 2.34 32.00 5.59 22.68 * 0.024 1.80 0.00 4.42 4.42 5.12 5.59 2.40 33.00 5.85 22.94 * 0.024 1.84 0.00 4.62 4.62 5.35 5.85 2.46 34.00 6.12 23.21 * 0.024 1.89 0.00 4.83 4.83 5.59 6.12 2.55 Box01-33.doc Page 2 of 8 PIPE NO. 3: 200 LF - 33"CP @ 0.35% OUTLET: 17.50 INLET: 18.19 INTYP: 5 JUNC NO. 3: OVERFLOW -EL: 30.25 BEND: 10 DEG DIA/WIDTH: 6.0 Q-RATIO: 0.14 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 19.20 3.07 21.26 * 0.012 1.45 1.49 3.36 3.36 2.90 3.07 2.04 20.00 3.28 21.47 * 0.012 1.48 1.53 3.54 3.54 3.10 3.28 2.09 20.80 3.50 21.69 * 0.012 1.51 1.57 3.73 3.73 3.30 3.50 2.14 21.60 3.73 21.92 * 0.012 1.54 1.61 3.92 3.92 3.52 3.73 2.19 22.40 3.97 22.16 * 0.012 1.57 1.65 4.12 4.12 3.74 3.97 2.24 23.20 4.22 22.41 * 0.012 1.60 1.68 4.34 4.34 3.98 4.22 2.29 24.00 4.50 22.69 * 0.012 1.63 1.72 4.57 4.57 4.23 4.50 2.34 24.80 4.80 22.99 * 0.012 1.66 1.76 4.83 4.83 4.52 4.80 2.38 25.60 5.19 23.38 * 0.012 1.68 1.80 5.18 5.18 4.89 5.19 2.43 26.40 5.49 23.68 * 0.012 1.71 1.84 5.44 5.44 5.17 5.49 2.48 27.20 5.81 24.00 * 0.012 1.74 1.88 5.71 5.71 5.47 5.81 2.52 PIPE NO. 4: 42 LF - 36"CP @ 0.67% OUTLET: 18.19 INLET: 18.47 INTYP: 5 JUNC NO. 4: OVERFLOW -EL: 30.27 BEND: 0 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.00 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 16.84 2.86 21.33 * 0.012 1.32 1.10 3.07 3.07 2.81 2.86 1.77 17.54 3.08 21.55 * 0.012 1.35 1.13 3.28 3.28 3.03 3.08 1.81 18.25 3.30 21.77 * 0.012 1.37 1.15 3.50 3.50 3.25 3.30 1.85 18.95 3.54 22.01 * 0.012 1.40 1.17 3.73 3.73 3.48 3.54 1.88 19.65 3.78 22.25 * 0.012 1.43 1.20 3.97 3.97 3.72 3.78 1.92 20.35 4.04 22.51 * 0.012 1.45 1.22 4.22 4.22 3.98 4.04 1.96 21.05 4.33 22.80 * 0.012 1.48 1.24 4.50 4.50 4.26 4.33 1.99 21.75 4.64 23.11 * 0.012 1.50 1.27 4.80 4.80 4.56 4.64 2.03 22.46 5.03 23.50 * 0.012 1.53 1.29 5.19 5.19 4.95 5.03 2.06 23.16 5.34 23.81 * 0.012 1.55 1.31 5.49 5.49 5.26 5.34 2.10 23.86 5.67 24.14 * 0.012 1.58 1.33 5.81 5.81 5.57 5.67 2.13 PIPE NO. 5: 215 LF - 36"CP @ 0.25% OUTLET: 18.47 INLET: 19.00 INTYP: 5 JUNC NO. 5: OVERFLOW -EL: 27.56 BEND: 40 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.00 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 16.84 2.54 21.54 * 0.012 1.32 1.45 2.86 2.86 2.42 2.54 1.80 17.54 2.76 21.76 * 0.012 1.35 1.49 3.08 3.08 2.66 2.76 1.84 18.25 2.99 21.99 * 0.012 1.37 1.52 3.30 3.30 2.90 2.99 1.88 18.95 3.25 22.25 * 0.012 1.40 1.55 3.54 3.54 3.16 3.25 1.92 19.65 3.51 22.51 * 0.012 1.43 1.59 3.78 3.78 3.41 3.51 1.96 20.35 3.79 22.79 * 0.012 1.45 1.62 4.04 4.04 3.68 3.79 2.00 21.05 4.09 23.09 * 0.012 1.48 1.66 4.33 4.33 3.98 4.09 2.04 21.75 4.42 23.42 * 0.012 1.50 1.69 4.64 4.64 4.30 4.42 2.08 22.46 4.84 23.84 * 0.012 1.53 1.72 5.03 5.03 4.71 4.84 2.12 23.16 5.17 24.17 * 0.012 1.55 1.76 5.34 5.34 5.03 5.17 2.15 23.86 5.52 24.52 * 0.012 1.58 1.79 5.67 5.67 5.37 5.52 2.19 Box01-33.doc Page 3 of 8 PIPE NO. 6: 97 LF - 36"CP @ -0.37% OUTLET: 19.00 INLET: 18.64 INTYP: 5 JUNC NO. 6: OVERFLOW -EL: 29.39 BEND: 0 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.00 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 16.84 3.01 21.65 * 0.012 1.32 0.00 2.54 2.54 2.97 3.01 1.79 17.54 3.24 21.88 * 0.012 1.35 0.00 2.76 2.76 3.19 3.24 1.82 18.25 3.47 22.11 * 0.012 1.37 0.00 2.99 2.99 3.42 3.47 1.86 18.95 3.74 22.38 * 0.012 1.40 0.00 3.25 3.25 3.68 3.74 1.90 19.65 4.01 22.65 * 0.012 1.43 0.00 3.51 3.51 3.94 4.01 1.94 20.35 4.29 22.93 * 0.012 1.45 0.00 3.79 3.79 4.23 4.29 1.97 21.05 4.61 23.25 * 0.012 1.48 0.00 4.09 4.09 4.54 4.61 2.01 21.75 4.95 23.59 * 0.012 1.50 0.00 4.42 4.42 4.87 4.95 2.04 22.46 5.37 24.01 * 0.012 1.53 0.00 4.84 4.84 5.29 5.37 2.08 23.16 5.72 24.36 * 0.012 1.55 0.00 5.17 5.17 5.63 5.72 2.11 23.86 6.07 24.71 * 0.012 1.58 0.00 5.52 5.52 5.98 6.07 2.14 PIPE NO. 7: 106 LF - 36"CP @ 0.08% OUTLET: 18.64 INLET: 18.72 INTYP: 5 JUNC NO. 7: OVERFLOW -EL: 30.97 BEND: 0 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.00 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 16.84 3.04 21.76 * 0.012 1.32 2.13 3.01 3.01 2.99 3.04 1.78 17.54 3.28 22.00 * 0.012 1.35 2.20 3.24 3.24 3.23 3.28 1.82 18.25 3.51 22.23 * 0.012 1.37 2.27 3.47 3.47 3.46 3.51 1.86 18.95 3.79 22.51 * 0.012 1.40 2.35 3.74 3.74 3.73 3.79 1.89 19.65 4.07 22.79 * 0.012 1.43 2.44 4.01 4.01 4.00 4.07 1.93 20.35 4.36 23.08 * 0.012 1.45 2.54 4.29 4.29 4.30 4.36 1.97 21.05 4.69 23.41 * 0.012 1.48 2.68 4.61 4.61 4.62 4.69 2.00 21.75 5.04 23.76 * 0.012 1.50 3.00 4.95 4.95 4.96 5.04 2.04 22.46 5.48 24.20 * 0.012 1.53 3.00 5.37 5.37 5.39 5.48 2.07 23.16 5.83 24.55 * 0.012 1.55 3.00 5.72 5.72 5.75 5.83 2.10 23.86 6.20 24.92 * 0.012 1.58 3.00 6.07 6.07 6.11 6.20 2.14 PIPE NO. 8: 115 LF - 36"CP @ 0.10% OUTLET: 18.72 INLET: 18.84 INTYP: 5 JUNC NO. 8: OVERFLOW -EL: 31.48 BEND: 11 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.17 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 16.84 2.98 21.82 * 0.012 1.32 1.89 3.04 3.04 2.98 2.85 1.60 17.54 3.23 22.07 * 0.012 1.35 1.95 3.28 3.28 3.23 3.09 1.62 18.25 3.47 22.31 * 0.012 1.37 2.00 3.51 3.51 3.47 3.31 1.65 18.95 3.75 22.59 * 0.012 1.40 2.06 3.79 3.79 3.75 3.58 1.67 19.65 4.03 22.87 * 0.012 1.43 2.11 4.07 4.07 4.03 3.85 1.69 20.35 4.34 23.18 * 0.012 1.45 2.17 4.36 4.36 4.34 4.14 1.70 21.05 4.67 23.51 * 0.012 1.48 2.23 4.69 4.69 4.67 4.46 1.72 21.75 5.02 23.86 * 0.012 1.50 2.30 5.04 5.04 5.02 4.80 1.74 22.46 5.47 24.31 * 0.012 1.53 2.37 5.48 5.48 5.47 5.23 1.75 23.16 5.83 24.67 * 0.012 1.55 2.44 5.83 5.83 5.83 5.58 1.77 23.86 6.21 25.05 * 0.012 1.58 2.53 6.20 6.20 6.21 5.94 1.78 Box01-33.doc Page 4 of 8 PIPE NO. 9: 61 LF - 24"CP @ 3.57% OUTLET: 18.90 INLET: 21.08 INTYP: 5 JUNC NO. 9: OVERFLOW -EL: 30.78 BEND: 0 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.00 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 14.39 1.83 22.91 * 0.012 1.37 0.77 2.92 2.92 1.37 ***** 1.83 14.99 1.87 22.95 * 0.012 1.40 0.79 3.17 3.17 1.40 ***** 1.87 15.59 1.91 22.99 * 0.012 1.43 0.80 3.41 3.41 1.43 ***** 1.91 16.19 1.96 23.04 * 0.012 1.46 0.82 3.69 3.69 1.46 ***** 1.96 16.79 2.00 23.08 * 0.012 1.48 0.84 3.97 3.97 1.48 ***** 2.00 17.39 2.66 23.74 * 0.012 1.51 0.85 4.28 4.28 2.41 2.66 2.05 17.99 3.02 24.10 * 0.012 1.53 0.87 4.61 4.61 2.76 3.02 2.11 18.59 3.42 24.50 * 0.012 1.56 0.89 4.96 4.96 3.13 3.42 2.16 19.19 3.90 24.98 * 0.012 1.58 0.90 5.41 5.41 3.60 3.90 2.22 19.79 4.31 25.39 * 0.012 1.60 0.92 5.77 5.77 3.99 4.31 2.28 20.39 4.73 25.81 * 0.012 1.63 0.93 6.15 6.15 4.39 4.73 2.34 PIPE NO.10: 80 LF - 24"CP @ 0.03% OUTLET: 21.09 INLET: 21.11 INTYP: 5 JUNC NO.10: OVERFLOW -EL: 28.83 BEND: 30 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.15 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 14.39 2.42 23.53 * 0.012 1.37 2.00 1.82 1.82 2.10 2.42 2.02 14.99 2.50 23.61 * 0.012 1.40 2.00 1.86 1.86 2.15 2.50 2.08 15.59 2.58 23.69 * 0.012 1.43 2.00 1.90 1.90 2.20 2.58 2.13 16.19 2.68 23.79 * 0.012 1.46 2.00 1.95 1.95 2.27 2.68 2.19 16.79 2.78 23.89 * 0.012 1.48 2.00 1.99 1.99 2.34 2.78 2.25 17.39 3.50 24.61 * 0.012 1.51 2.00 2.65 2.65 3.03 3.50 2.31 17.99 3.93 25.04 * 0.012 1.53 2.00 3.01 3.01 3.42 3.93 2.39 18.59 4.39 25.50 * 0.012 1.56 2.00 3.41 3.41 3.85 4.39 2.46 19.19 4.94 26.05 * 0.012 1.58 2.00 3.89 3.89 4.36 4.94 2.53 19.79 5.41 26.52 * 0.012 1.60 2.00 4.30 4.30 4.80 5.41 2.61 20.39 5.90 27.01 * 0.012 1.63 2.00 4.72 4.72 5.25 5.90 2.68 PIPE NO.11: 27 LF - 24"CP @ 0.26% OUTLET: 21.11 INLET: 21.18 INTYP: 5 JUNC NO.11: OVERFLOW -EL: 29.19 BEND: 30 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.00 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 12.52 2.60 23.78 * 0.012 1.28 1.65 2.42 2.42 2.42 2.60 1.78 13.04 2.70 23.88 * 0.012 1.30 1.74 2.50 2.50 2.51 2.70 1.82 13.56 2.80 23.98 * 0.012 1.33 2.00 2.58 2.58 2.59 2.80 1.86 14.08 2.92 24.10 * 0.012 1.36 2.00 2.68 2.68 2.70 2.92 1.90 14.60 3.04 24.22 * 0.012 1.38 2.00 2.78 2.78 2.81 3.04 1.94 15.13 3.79 24.97 * 0.012 1.41 2.00 3.50 3.50 3.54 3.79 1.98 15.65 4.24 25.42 * 0.012 1.43 2.00 3.93 3.93 3.97 4.24 2.02 16.17 4.73 25.91 * 0.012 1.46 2.00 4.39 4.39 4.44 4.73 2.07 16.69 5.31 26.49 * 0.012 1.48 2.00 4.94 4.94 4.99 5.31 2.11 17.21 5.81 26.99 * 0.012 1.50 2.00 5.41 5.41 5.48 5.81 2.15 17.73 6.33 27.51 * 0.012 1.52 2.00 5.90 5.90 5.98 6.33 2.20 Box01-33.doc Page 5 of 8 PIPE NO.12: 110 LF - 24"CP @ 0.42% OUTLET: 21.18 INLET: 21.64 INTYP: 5 JUNC NO.12: OVERFLOW -EL: 27.97 BEND: 0 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.00 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 12.52 2.56 24.20 * 0.012 1.28 1.35 2.60 2.60 2.43 2.56 1.73 13.04 2.69 24.33 * 0.012 1.30 1.39 2.70 2.70 2.55 2.69 1.77 13.56 2.83 24.47 * 0.012 1.33 1.43 2.80 2.80 2.68 2.83 1.81 14.08 2.99 24.63 * 0.012 1.36 1.47 2.92 2.92 2.82 2.99 1.84 14.60 3.15 24.79 * 0.012 1.38 1.52 3.04 3.04 2.98 3.15 1.88 15.13 3.94 25.58 * 0.012 1.41 1.57 3.79 3.79 3.75 3.94 1.91 15.65 4.43 26.07 * 0.012 1.43 1.62 4.24 4.24 4.23 4.43 1.95 16.17 4.96 26.60 * 0.012 1.46 1.68 4.73 4.73 4.75 4.96 1.99 16.69 5.58 27.22 * 0.012 1.48 1.76 5.31 5.31 5.36 5.58 2.02 17.21 6.13 27.77 * 0.012 1.50 2.00 5.81 5.81 5.89 6.13 2.06 **************** OVERFLOW ENCOUNTERED AT 17.73 CFS DISCHARGE ***************** ******** OVERFLOW CONDITIONS CALCULATED ASSUMING SURCHARGE CONDITIONS ********* 17.73 6.70 28.34 * 0.012 1.52 2.00 6.33 6.33 6.44 6.70 2.10 PIPE NO.13: 178 LF - 24"CP @ 0.15% OUTLET: 21.64 INLET: 21.90 INTYP: 5 JUNC NO.13: OVERFLOW -EL: 26.76 BEND: 0 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.15 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 12.52 2.97 24.87 * 0.012 1.28 2.00 2.56 2.56 2.76 2.97 1.81 13.04 3.16 25.06 * 0.012 1.30 2.00 2.69 2.69 2.93 3.16 1.86 13.56 3.36 25.26 * 0.012 1.33 2.00 2.83 2.83 3.11 3.36 1.90 14.08 3.58 25.48 * 0.012 1.36 2.00 2.99 2.99 3.31 3.58 1.95 14.60 3.81 25.71 * 0.012 1.38 2.00 3.15 3.15 3.52 3.81 1.99 15.13 4.66 26.56 * 0.012 1.41 2.00 3.94 3.94 4.36 4.66 2.04 **************** OVERFLOW ENCOUNTERED AT 15.65 CFS DISCHARGE ***************** ******** OVERFLOW CONDITIONS CALCULATED ASSUMING SURCHARGE CONDITIONS ********* 15.65 5.22 27.12 * 0.012 1.43 2.00 4.43 4.43 4.90 5.22 2.08 16.17 5.82 27.72 * 0.012 1.46 2.00 4.96 4.96 5.48 5.82 2.12 16.69 6.52 28.42 * 0.012 1.48 2.00 5.58 5.58 6.15 6.52 2.17 17.21 7.15 29.05 * 0.012 1.50 2.00 6.13 6.13 6.75 7.15 2.22 17.73 7.79 29.69 * 0.012 1.52 2.00 6.70 6.70 7.37 7.79 2.27 PIPE NO.14: 78 LF - 24"CP @ 0.06% OUTLET: 21.90 INLET: 21.95 INTYP: 5 JUNC NO.14: OVERFLOW -EL: 26.62 BEND: 0 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.00 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 10.88 3.17 25.12 * 0.012 1.19 2.00 2.97 2.97 3.08 3.17 1.61 11.34 3.38 25.33 * 0.012 1.21 2.00 3.16 3.16 3.28 3.38 1.64 11.79 3.60 25.55 * 0.012 1.24 2.00 3.36 3.36 3.49 3.60 1.68 12.25 3.85 25.80 * 0.012 1.26 2.00 3.58 3.58 3.72 3.85 1.71 12.70 4.10 26.05 * 0.012 1.29 2.00 3.81 3.81 3.97 4.10 1.75 **************** OVERFLOW ENCOUNTERED AT 13.15 CFS DISCHARGE ***************** ******** OVERFLOW CONDITIONS CALCULATED ASSUMING SURCHARGE CONDITIONS ********* 13.15 4.98 26.93 * 0.012 1.31 2.00 4.66 4.66 4.84 4.98 1.78 13.61 5.56 27.51 * 0.012 1.33 2.00 5.22 5.22 5.41 5.56 1.81 14.06 6.19 28.14 * 0.012 1.36 2.00 5.82 5.82 6.03 6.19 1.84 14.51 6.92 28.87 * 0.012 1.38 2.00 6.52 6.52 6.75 6.92 1.88 14.97 7.57 29.52 * 0.012 1.40 2.00 7.15 7.15 7.39 7.57 1.91 15.42 8.25 30.20 * 0.012 1.42 2.00 7.79 7.79 8.05 8.25 1.94 Box01-33.doc Page 6 of 8 PIPE NO.15: 77 LF - 24"CP @ 0.25% OUTLET: 21.95 INLET: 22.14 INTYP: 5 JUNC NO.15: OVERFLOW -EL: 27.29 BEND: 0 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.00 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 10.88 3.24 25.38 * 0.012 1.19 1.48 3.17 3.17 3.14 3.24 1.61 11.34 3.46 25.60 * 0.012 1.21 1.53 3.38 3.38 3.36 3.46 1.64 11.79 3.70 25.84 * 0.012 1.24 1.59 3.60 3.60 3.59 3.70 1.68 12.25 3.97 26.11 * 0.012 1.26 1.66 3.85 3.85 3.85 3.97 1.71 12.70 4.25 26.39 * 0.012 1.29 1.73 4.10 4.10 4.12 4.25 1.74 **************** OVERFLOW ENCOUNTERED AT 13.15 CFS DISCHARGE ***************** ******** OVERFLOW CONDITIONS CALCULATED ASSUMING SURCHARGE CONDITIONS ********* 13.15 5.15 27.29 * 0.012 1.31 2.00 4.98 4.98 5.01 5.15 1.78 13.61 5.76 27.90 * 0.012 1.33 2.00 5.56 5.56 5.61 5.76 1.81 14.06 6.42 28.56 * 0.012 1.36 2.00 6.19 6.19 6.26 6.42 1.84 14.51 7.17 29.31 * 0.012 1.38 2.00 6.92 6.92 7.00 7.17 1.87 14.97 7.85 29.99 * 0.012 1.40 2.00 7.57 7.57 7.67 7.85 1.91 15.42 8.56 30.70 * 0.012 1.42 2.00 8.25 8.25 8.36 8.56 1.94 PIPE NO.16: 75 LF - 24"CP @ 0.00% OUTLET: 22.14 INLET: 22.14 INTYP: 5 JUNC NO.16: OVERFLOW -EL: 27.87 BEND: 0 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.00 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 10.88 3.48 25.62 * 0.012 1.19 0.00 3.24 3.24 3.38 3.48 1.61 11.34 3.73 25.87 * 0.012 1.21 0.00 3.46 3.46 3.62 3.73 1.65 11.79 3.99 26.13 * 0.012 1.24 0.00 3.70 3.70 3.88 3.99 1.68 12.25 4.28 26.42 * 0.012 1.26 0.00 3.97 3.97 4.16 4.28 1.71 12.70 4.58 26.72 * 0.012 1.29 0.00 4.25 4.25 4.45 4.58 1.75 13.15 5.51 27.65 * 0.012 1.31 0.00 5.15 5.15 5.37 5.51 1.78 **************** OVERFLOW ENCOUNTERED AT 13.61 CFS DISCHARGE ***************** ******** OVERFLOW CONDITIONS CALCULATED ASSUMING SURCHARGE CONDITIONS ********* 13.61 6.15 28.29 * 0.012 1.33 0.00 5.76 5.76 5.99 6.15 1.81 14.06 6.83 28.97 * 0.012 1.36 0.00 6.42 6.42 6.67 6.83 1.84 14.51 7.61 29.75 * 0.012 1.38 0.00 7.17 7.17 7.43 7.61 1.88 14.97 8.32 30.46 * 0.012 1.40 0.00 7.85 7.85 8.13 8.32 1.91 15.42 9.05 31.19 * 0.012 1.42 0.00 8.56 8.56 8.85 9.05 1.94 PIPE NO.17: 86 LF - 24"CP @ 0.23% OUTLET: 22.14 INLET: 22.34 INTYP: 5 JUNC NO.17: OVERFLOW -EL: 27.51 BEND: 5 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.51 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 10.88 3.69 26.03 * 0.012 1.19 1.52 3.48 3.48 3.46 3.69 1.74 11.34 3.96 26.30 * 0.012 1.21 1.58 3.73 3.73 3.71 3.96 1.79 11.79 4.26 26.60 * 0.012 1.24 1.64 3.99 3.99 3.99 4.26 1.83 12.25 4.59 26.93 * 0.012 1.26 1.72 4.28 4.28 4.30 4.59 1.88 12.70 4.92 27.26 * 0.012 1.29 1.86 4.58 4.58 4.61 4.92 1.92 **************** OVERFLOW ENCOUNTERED AT 13.15 CFS DISCHARGE ***************** ******** OVERFLOW CONDITIONS CALCULATED ASSUMING SURCHARGE CONDITIONS ********* 13.15 5.89 28.23 * 0.012 1.31 2.00 5.51 5.51 5.56 5.89 1.97 13.61 6.57 28.91 * 0.012 1.33 2.00 6.15 6.15 6.21 6.57 2.02 14.06 7.29 29.63 * 0.012 1.36 2.00 6.83 6.83 6.91 7.29 2.06 14.51 8.11 30.45 * 0.012 1.38 2.00 7.61 7.61 7.71 8.11 2.11 14.97 8.87 31.21 * 0.012 1.40 2.00 8.32 8.32 8.44 8.87 2.15 15.42 9.65 31.99 * 0.012 1.42 2.00 9.05 9.05 9.19 9.65 2.20 Box01-33.doc Page 7 of 8 PIPE NO.18: 145 LF - 24"CP @ 0.21% OUTLET: 22.34 INLET: 22.64 INTYP: 5 JUNC NO.18: OVERFLOW -EL: 28.16 BEND: 0 DEG DIA/WIDTH: 4.0 Q-RATIO: 0.00 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 7.21 3.56 26.20 * 0.012 0.96 1.18 3.69 3.69 3.52 3.56 1.29 7.51 3.84 26.48 * 0.012 0.98 1.21 3.96 3.96 3.80 3.84 1.32 7.81 4.16 26.80 * 0.012 1.00 1.24 4.26 4.26 4.11 4.16 1.35 8.11 4.50 27.14 * 0.012 1.02 1.27 4.59 4.59 4.44 4.50 1.38 8.41 4.85 27.49 * 0.012 1.04 1.30 4.92 4.92 4.79 4.85 1.40 **************** OVERFLOW ENCOUNTERED AT 18.71 CFS DISCHARGE ***************** ******** OVERFLOW CONDITIONS CALCULATED ASSUMING SURCHARGE CONDITIONS ********* 8.71 5.84 28.48 * 0.012 1.06 1.34 5.89 5.89 5.77 5.84 1.43 9.01 6.53 29.17 * 0.012 1.08 1.37 6.57 6.57 6.47 6.53 1.45 9.31 7.27 29.91 * 0.012 1.10 1.40 7.29 7.29 7.20 7.27 1.48 9.61 8.11 30.75 * 0.012 1.11 1.44 8.11 8.11 8.04 8.11 1.51 9.91 8.89 31.53 * 0.012 1.13 1.47 8.87 8.87 8.81 8.89 1.53 10.21 9.68 32.32 * 0.012 1.15 1.51 9.65 9.65 9.60 9.68 1.55 PIPE NO.19: 123 LF - 24"CP @ 0.33% OUTLET: 22.64 INLET: 23.05 INTYP: 5 Q(CFS) HW(FT) HW ELEV. * N-FAC DC DN TW DO DE HWO HWI ******************************************************************************* 7.21 3.38 26.43 * 0.012 0.96 1.02 3.56 3.56 3.26 3.38 1.37 7.51 3.68 26.73 * 0.012 0.98 1.04 3.84 3.84 3.55 3.68 1.41 7.81 4.01 27.06 * 0.012 1.00 1.07 4.16 4.16 3.87 4.01 1.44 8.11 4.38 27.43 * 0.012 1.02 1.09 4.50 4.50 4.22 4.38 1.48 8.41 4.75 27.80 * 0.012 1.04 1.12 4.85 4.85 4.59 4.75 1.51 **************** OVERFLOW ENCOUNTERED AT 8.71 CFS DISCHARGE ***************** 8.71 5.76 28.81 * 0.012 1.06 1.14 5.84 5.84 5.58 5.76 1.54 9.01 6.48 29.53 * 0.012 1.08 1.16 6.53 6.53 6.29 6.48 1.58 9.31 7.24 30.29 * 0.012 1.10 1.19 7.27 7.27 7.04 7.24 1.61 9.61 8.11 31.16 * 0.012 1.11 1.21 8.11 8.11 7.89 8.11 1.65 9.91 8.91 31.96 * 0.012 1.13 1.24 8.89 8.89 8.68 8.91 1.68 10.21 9.73 32.78 * 0.012 1.15 1.26 9.68 9.68 9.49 9.73 1.71 Exit KCBW Program KING COUNTY DEPARTMENT OF NATURAL RESOURCES Water and Land Resources Division BACKWATER ANALYSIS PROGRAM Version 6.00 Box01-33.doc Page 8 of 8 150A 79A 145A 140A 17 138A 16 137A 13 136A 14 135A 130A 125 120A 10 South 2nd St 115A SPU Water Mains 110A 9 PMX 107A 0 0 PMX 106A 105A 6 .4 1+y Kc�w 100A 95A s 80B .11 4 - 80A z> j South 3rd St • 100A 95A 3 4 / 3 ! /R 150A 125 120A 1 South end St 115A SPU Water Mains PMX 107A PMX 106A 105A 0 C' +y pI pe's jSouth 3rd St B6x CkJVt,ri- iZGlnl(r Ave. 79A v 100A 95A 3 ' i i iq3 > 150A 125 li 120A South 2nd St 115A SPU Water Mains OA PMX 107A I:►vjFIN a • MOA jSouth 3rd St 4 A f GS or ro��� - 2 2 Af 1+ ( S.7ob�"-L"P('4 � �j 150AAIAJAK 145A 6. 7, 00 $ 140A 138A 136A �H 135A_AH eGff) j3 130A 2 , % ( T y/, O125A 0 A. 115A_AF,AD,� 3v, �8. PMx 10A C�Oss in.l TyPt 1 c 1 i,� o �, �) — 3 o.� lo�a 31,4� PMx J06A Il Lo. J-, 1 a ow ) 105A 2-4. S� (-ry,.� '? C61 iD '5A_Z,AA,Y 78A 79A 95A_AE J 100A \ ��`J�O ___ .. 30A _AB ACAP 3 o . 2 S i,� Ca 4. N V 3o,S� 3o,I? • EX. RIM �leve¢iv�f f Gs or ac�J�cr,tf T�rc C3 �rom a -21a2 A' 8 I+ (L.PCAV, r!c6 Ir/7,4 Q 150AAIAJAK ) 00 145A I; 140A , 8 1.38 A 2 , 2 7j 1, e ✓t� Is 137A . G 2 � /- �vcsf) IH 136A 135A_AH '— 2 6,7 6 (T�/�r 1, r°G✓f) 13 130A n 125A f O A. 2 3, 8 3 - 115A_AF,� 30,�8.�'MX -ail C7y,�L l c6 TACO l,,t, _ 3 o.a ,I 1 °3A 6 10A 31,4a PMX S�� C6oSSi�� I'VI � rr — 2�,3 106A I� S'i'`'u'c�q ( TQ2 In Lo-+, ► rJw 105A '5A_Z,AA,Y 78A 7 - 95A_AE J 100A ..30A_ABACAP 3 o. 2S (�, ! Ca >vw i 30,5� 3 o. Figure B-2. Model schematic — Project area, existing conveyance system 6aq 15gA South Tobin Street Figure B-1. Model schematic — North of project area Culvert Design D. C4 re7 y_70-10 5,000 — 16'-7' x 10'-1' 4,000 I � a i2) 15'-4'x 9'-3' 3.000 EXAMPLE � �3) Sirs: We 22' 3 4 * � 12'-10 x 8'-4' 2000 , 0. 20 cis D-2.25 I In HW * HW j 0 W D (foot) F 3 (r J t I'-5'x 7'-3' (1) L10 2.0 ro r 2 w o. I o00 ' (2) LIS 2.1 E00 rr I+ 3 2 tt o.4 (3) 1.22 2.2 X Z v 9' - 6' x 6'-5' 600 *D in fast 2 2 L /� I �W ao 500 V( _ Or u~r 8'-2' x 5'-9' 400 1.5 300 1.5 1.5 s 7'- 0' x 5'- 1' 200 , - u 6' 1' x 4'-7' — -- ► --► 2 0 i 6 I. 7 a/� a 1.0 35 a 72' x 44' U 100 / ; 1.0 80 9 1.0 0 65'x40' 60Uj / P�Qj// +� W 9 a / N g— 8 w N 58' x 36' 50 Cr LL .8 z � / sc z 30 / N r< �G s as 50' x 31' N / W .7 N / f .7 HW ENTRANCE D SCALE TYPE i 7 Iw 3'tc 2T'---�- (1) Headwall C. 6 � / (2) Mitered to conform 6 .6 U / / 36' x 22' 8 to slope 'etaing W � 6 (3) Q 9 a 0 z 5 .51 ~ 4 = 5 5 S 29' x Is' To use scale (2) or (3) pro)ect 3 horizontally to scale (1), then use straight inclined line through D and 0 scales, or reverse as 25' x 16' 2 illustrated. .4 4 .4 22' x 13• 1.0 .8 D 18' x 11' .35 .35 .3S .5 *ADDITIONAL SIZES NOT DIMENSIONED ARE HEADWATER DEPTH FOR LISTED IN FABRICATOR'S CATALOG C. M. 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