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Home My WebLink AboutSWP271756/�ECi,� C3GE O/STi�2/ rl TO Cf DETE�r�o sv � P//�E s ��ivG CAZ-CuGArioA/S C 'A;�E vis10 �v , - s - z� • SS) BUSH, ROED & HITCHINGS, INC. CIVIL ENGINEERS & LAND SURVEYORS SEATTLE, WASHVNGTON 323-41" FILE COPY s/za/85 SSw 8�zzo . o L F LEAV CrT/tS 36 " 7. o -7 cF/4,� = -7D c'c- 28 . Z J W- sue,. M /cc3 /S. cl 8 e� / z, 3 S Y�` f 0 " /"►'�/ate c� z 5 7 �'`/�i� �- / S 5 G,c 5 . S 1 V/r 72 "' /-1/-/ ct7 z S. Z 7 /6 " /�/f'E ark o • 5 S G �F = /o / G �_ 0. / 5" R/pE (�D A z3 c.0 jD T6 T A-L VOW M E Ai?O 1//DE = 9 , ° Z Z �� El,lA(3L� D15SjUTO12S -DET'6,QTtb7j ff P/Prz- SIZ�►�(C� C A-� v L-147-1 a &t 5 BUSH, ROED & HITCHINGS, INC. CIVIL ENGINEERS & LAND SURVEYORS SEATTLE. WASHINGTON 323-41" FILE COPY _CAI ArP,Lr DISTF-IBUTor-'s - lzk-�_Cm 0 D ftTr,..-t7lojJ �COLWnOUs 3(zz.las �Z 8422D.0 I la+ CJOOL.F Gj 0,2Z"/o = l0 -i o.l�sxbo `1.�-�-t.�s � � b�• � �tc� t� 1 � e�1 r Storn�t = (� .S� �'�� ►�1�t'�. t c k -s-n f-c e e Cc 0� L Q o,io�o .7 �FLrru ej-'- -- 0 �2)S Qra� 4,Z73 4c,(;,ls)o ,ss ,2S + c�c�z. _ _2S i�6z - 143 , (o � SbZOCT) T 5 ^ IT + z.S �U�0�2�I43�(o = �'S-7cf L, 14'; ( +ZS � / �ZZo, o l 2r 12 VT = SI Cf 89ss cF Rktx--K- I4FLOW C�jLx-Roa ��\3 vvk.e Z ?. s v I . S n t-�r Pt�0 U F, v-) LLL. 1:� I-'-- l ,o �'-4-- 0 0 Le-w OS ; - cft) 7D P P-►5UL TZ)P S 40-IL)L.0 P.)f` 3.7 - 2 2S �ff�a< ! n R4,A . s�v P I P �_ �bl - S56g n� O/ r �� Scl� _ / ��Z► ad►d .4c -n �SZ l 15 -tIZSISS 0-i �D I ne- � = 19, �Z; Cf= /LF L 0► _ o C 19,(02DCl/,f 2� C w iiLCO ci3 (4 -a 13 I Oo L�-- 4z, C i z is�C F/LF �24 F ► C- �z►tic �� Q = o , 2i3 �5 CA d�(v2 2� c ►3,7d �,��ji zi� 4co.oz3 �v or Zs7 o,z73 0,0233IS 0.6:12 T(o4,4-(55 17Zc-,A-- - 'Z,O 7 t v1c�e 2 tn��QS p F� ZJL 3-c_c c Tc Oki 1 s/iZ STEEL EQUATION COEFFICIENTS; BEGIN MOST SOUTHERLY WEST DS K = 31.01 b = 9.1 INIT Tc = 5.00 min WATERCOURSE TYPES: INIT 2AC = 0.00 1 FOREST w/ HEAVY GROUND LITTER OVERLAND FLOW: 2 MINIMUM TILLAGE CULTIVATION 3 SHORT GRASS PASTURE & LAWNS TYPE LENGTH %SLOPE VEL TIME 4 NEARLY BARE GROUND 6 150.00 2.00 2.83 0.88 5 GRASSED WATERWAY 6 PAVED AREA RUNOFF: 7 OTHER **#: :x* ---------- POINT DS SOUTH TO CB 10 BEGIN SOUTHWEST AREA Tc = 5.88 min INIT Tc = 5.00 min AREA = 0.23 acres INIT ZAC = 0.00 C = 0.90 EAC = 0.21 OVERLAND FLOW: I = 2.07 in/hr 0 DESIGN = 0.43 cis V DESIGN = 2.50.ftrsec TYPE LENGTH %SLOPE VEL TIME PIPE- 6 130.00 2.00 2.83 0.77 INVERT IN = 12.80 it INVERT OUT = 11.30 it RUNOFF: LENGTH = 75.00 it n = 0.024 DIAM = 6.00 in ---------- SLOPE = 2.00 % POINT CB 9 TO CB 8 Q, FULL = 0.43 c f s V FULL = 2.19 ft/sec Tc = 5.77 min FLOW TIME = 0.50 min AREA = 0.23 acres C = 0.90 2AC = 0.21 ---------- I = 2.09 inzhr POINT CB 10 TO CB 8 Q DESIGN = 0.43 cis V DESIGN = 2.34 fI/sec Tc = 6.38 min AREA = 0.17 acres PIPE: C = 0.85 INVERT IN = 12.40 it ZAC = 0.35 INVERT OUT = 11.05 it I = 2.00 i n/h r LENGTH = 90.00 it 0 DESIGN = 0.?0 cis ro = 0.024 V DESIGN = 1.72 ft/sec DIAM = 8.00 in SLOPE = 1.50 % PIPE; Q FULL = 0.80 cis INVERT IN = 11.30 it V FULL = 2.30 ftzsec INVERT OUT = 11.05 it FLOW TIME = 0.64 min LENGTH = 50.00 it n = 0.024 DIAt9 = 10.00 'in SLOPE = 0.50 % Q FULL 0.64 cis _ V FULL 1.54 ft/sec FLOW TIME = 0.48 min COMBINE AREAS FROM CB 9 AND 10 INIT Tc = 6.86 min INIT MAC = 0.56 OVERLAND FLOW: RUNOFF: POINT CS 8 TO CB 7 Tc = 6.86 miry AREA = 0.00 acres C = 0.90 MAC = 0.56 I = 1.95 in/hr 9 DESIGN = 1.09 cis V DESIGN = 1.93 ft/sec PIPE= INVERT IN = 11.05 it INVERT OUT = 10.45 it LENGTH = 120.00 it n = 0.024 DIAM = 12.00 in SLOPE = 0.50 ,a FULL = 1.36 cis V FULL = 1.74 ft/sec FLOW TIME = 1.04 min POINT CB 7 TO CB 6 Tc = 7.90 miry AREA = 0.13 acres C = 0.85 21AC = 0.67 I = 1.83 in/hr- Q DESIGN = 1.23 cis V DESIGN = 1.97 it/sec PIPE: INVERT IN = 10.45 it INVERT OUT = 9.90 it LENGTH = 110.00 it n = 0.024 DIAM = 12.00 in SLOPE = 6.50 % Q FULL = 1.36 cis V FULL = 1.74 it. -'sec FLOW TIME = 0.93 min BEGIN MOST WESTERLY SOUTH DS INIT Tc = 5.00 min INIT MAC = 0.00 OVERLAND FLOW: TYPE LENGTH %SLOPE VEL TIME 6 150.00 2.00 2.83 0.88 RUNOFF: POINT DS EAST TO DS Tc = 5.88 min AREA = 0.23 acres C = 0.90 28C = 0.21 I = 2.07 in/hr Q DESIGN = 0.43 cis V DESIGN = 2.50 ft/sec PIPE= INVERT IN = 15.50 it INVERT OUT = 13.10 it LENGTH = 120.00 it n = 0.024 DIAM = 6.00 in SLOPE = 2.00 % Q FULL = 0.43 cis V FULL = 2.19 ft/sec FLOW TIME = 0.80 min POINT DS TO C6 6 Tc = 6.69 miry AREA = 0.19 acres C = 0.90 2AC = 0.38 I = 1.96 in/hr Q DESIGN = 0.74 cis V DESIGN = 4.32 ft/sec PIPE: INVERT IN = 13.10 it INVERT OUT = 11.30 it LENGTH = 30.00 it n = 0.024 DIAM = 6.00 in SLOPE = 6.00 0 FULL = 0.74 cis 1.) FULL = 3.79 f t !sec FLOW TIME = 0.12 min COMBINE FROM CB 2 AND OS INIT Tc = 8.83 min INIT 2HC = 1.85 OVERLAND FLOW: RUNOFF: POINT CB 6 TO CB 5 Tc 8.83 min AREA = O.IS acres C U.85 RAC = 1.16 I = 1.23 inxhr 0 DESIGN = 2.8! c f s p DESIGN = 2.25 *lxsec PIPE: INVERT IN INVERT OUT = g 73 f! LENGTH = !1/\0e ff n 8.824 DIAll = l5.e8 in SLOPE = 0CIO % 0 FULL = 2.42 c f s p FULL = 2.82 itxsec FLOW TIME _ 0.85 min POINT CB 5 TO CB 4 TE = CI min HREB = C.", acres C = 0 85 IBC = l.4w I = 1.65 inxhr @ DESIGN c!s V DESIGN = /.29 ffZsec PIP E INVERT IN INVERT OUT = 8_63 i LENGTH = 140.00 it n = 0.024 DIFill = 15.88 in SLOPE = 0.50 2 0 FULL = 2.42 c!s Q FULL = 2.02 ftZsec FLOW TIME = 1-02 *in . . . -7/t2- POINT CB 4 TO CB 3 Tc = 10.70 min AREA = 0.31 acres IHC I = 1.52 inxhr @ DESIGN = 2.60 cis V DESIGN = 2.32 It/sec RIPE: INVERT IN = 8.63 it INVERT OUT = ; ft a.47 LENGTH = 10G.50 it n • = 0 024 DIAM = 36.00 in SLOPE @ �C4 2 0,)S Q FULL = �2S Fv4 cis 4•&± V FULL = c"_62 f*ZseE FLOW TIME _ 0.28 min BEGIN MOST SOUTHERLY EAST DS INIT Tc = 5.80 min INIT IHC OVERLAND FLOW: TYPE LENGTH %SLOPE VEL TIME 6 138.me z.ae 2.83 @.27 RUNOFF: POINT DS TO CB 12 Tc = 5.2" min AREA = @.19 acres C = @.98 IAC I = 2.89 inxhr 0 DESIGN = 0.36 cis V DESIGN = 2_45 *tZseE PIPE: INVERT IN = 11.98 it INVERT OUT = 11.20 f LENGTH = 35.00 it n = 0.024 DIAM = 6.00 in SLOPE = 2.00 % 9 FULL = 8.43 cis V FULL = 2.19 ft/sec FLOW TIME = 0.24 min P0I NT CB 1 TO CB 1 1 Tc = 6.00 min AREA = I . fl6 a r-er C = N . 9 cl 2AC I = �.05 infhr G± 0 ES I GN = 0.46 c f '.! GESIGN = 2 . 65 f t!=ec i PIPE= I N',!ERT IN = 1 1. -211 it INVERT OUT = 9.90 it LENGTH = E5.00 tt rl = 0.0 4 DIAM = 8.00 in SLOPE = 00 0 FALL = 0.93 cf= V FULL = 2.65 f t r =ec FLOW TIME = 0.41 min CENTER EA'=-T D', TO CB 11 INIT Tc = 5.00 min INIT EAC: = 0.00 C,VERLAND FLOW TYPE LENGTH ':=:LOPE VEL TIME r. 130 �� 2CiG1 C. 0.1'r F'UNCiFF PO I NT DS TO C:B 1 1 Tc = AREA = 1_: _ A _ I = Q, DESIGN = U DES I GH = PIPE 1 1-1 IJ E R T I N = I N4!ER.T OUT = LENGTH = n = DIAM = SLOPE _ r_.± FULL = V FULL = FLOW TIME _ 5.7; ruin L.09 in/hr 0.54 cfs 3 . 50 f t f'sec 10 1 t=1 t t 4.9b tt 5 . Pit t f t 0.024 i n 4.00 r. f1,61 cfs ,.10 ft/sec t9.02 min MOST NORTHERLY EAST DS TO CB 11 INIT Tc = 5.00 min INIT EAC = 0. E10 OVERLAND FLOW TYPE LENGTH %'=.LOPE VEL TIME c. 130 . 00 2 . 011 RUNOFF POINT DS SOUTH TO CB 11 Tc = AREA = f: _ SAC = I = Cj DESIGN = Id DESIGN = PIPE 5 _ 787 rain t1 ?9 .fir re= ►� . 9 0 tj,n 2 . 09 i n,`h r t .5-4 c f s J ,?, Fi i t /= Ct I N'.!ERT I N = 12 70 f t INVERT OUT = _4_ . 90 f t LENGTH = =0.00 ft n = 0.024 GIAt1 = b.t11=1 In SLOPE _ . 5E1 Q FULL = 0.57 cf ',! FULL = 2 . 90 f t-'s►_=c: FLOW TIME = 0 _ 40 min i= -JMB I NE FLOW AT CB 11 INIT T-= = E..41 rain INIT L AC: OVERLAND FLOW: RUNOFF POINT C= B 11 TO CB Tc = 6.41 min AREA = 0 . 0C. ac re=. C = 0.90 I = 2.CIO in/hr 0 ElE='IGN = 1.61 cfs DES I GN = 2 . 4 f t /sec PIPE= INI,!ERT IN = 9« f t INVERT OUT = C4 . 17 # t LENGTH = 105.00 it ri = 0 . 024 DIAM = 12.0t1 irl SLOPE = 0.70 Q FULL = 1 .61 cis V FULL = .06 f t % s ec FLOW TIME = 1=�.7= noin COMBINE FROM CB 4 AND CB 11 INIT Tc = 11 .48 rain INIT Hi= _.465 O1.lERLAND FLOW: RUNOFF; Pi i I NT C:B TO C:B Tc = 11 .48 rain AREA = tit . 2? a re= I^ = r. c I = 1.51 in/hr- �_! DES I GN = 4. 05 c f s 4! DESIGN = c.64 ft/sec PIPE: I N',!ERT I N = I NI..'ERT OUT = = = DIAI1 = SLOPE _ Q FULL = 'a' FULL = FLOW TIME _ �-�,�- t ---------- POINT C-B ' TO MH 1 Tc = AREA = A C: _ I = Q DESIGN = V DESIGN = PIPE: INVERT IN = INVERT OUT = LENGTH = n = D I A N = SLOPE _ 0 FULL = ',! FULL = FLOW TIME _ 1c.17 min r� .? acres 1.46 in/hr- 4. t 6. c f '1 2.72 ft/_ec 7 5 0 L1 f f 0.024 �-` : E+ c f s: eft/sec 0.46 min BEGIN CENTRAL WEST DS TO NORTH INIT Tc = 5. k'0 nfiin I N I T y A C: = f"i . 171A OVERLAND FLOW T`rPE LENGTH %'=:LOPE VEL TIME F. 16 t_1 0 0 - . 8 7 4 RUNOFF! Pi=►INT i=ENTER DS TO NORTH Et Tc = 5.94 min AREA = O._ acres C = 0.90 A C I = c.Nr. ire-`hr Q DEE: I GN = 0.61 c f s ',! DESIGN = 2.13 ft/sec PIPE: I NVERT IN = 14.00 it INVERT OUT = 12.80 it LENGTH = 120 . 00 it n = 0.024 DIAM = 8.00 in SLOPE = 1.00 Q FULL = 0.65 cis V FULL = 1.88 ft/sec FLOW TIME = 0.C4 min P1=1 I NT NORTH Dr. TO CE. 15 Tc = 6.8'S min AREA = 0 -2 acre=. C = 0.90 SAC = 0.50 I = 1.94 inxhr- G' DESIGN = 0.9E: cis V DESIGN = 2'.43 ft/sec PIPE: I N'L'ERT I N = 12 . c:0 t t INUERT OUT = 11.45 ft LENGTH = 135 . 00 it n = 0.024 DIFill = 10.00 in SLOPE = 1.00 't CD FULL = 1.19 c i s 4! FULL = 2.18 ft/sec FLOW TIME = 0.93 min POINT CB 15 TO CE: 14 Tc = 7.�:1 min AREA = 4=j. - arre= yAC = 0.69 I = 1 S in:'hr '1 DEr"IGN PIPE I N'.; ERT I N = 1 1. 45 f t INIdERT CIUT = 10.01 f t LENGTH = 12, 0. 00 f t n = 0.024 111Fill = 10.00 in SLOPE = 1.20 Q FULL = 1 0 c f s f 'd FULL = 2 . 38 f IX_- FLOW TIME = 0.74 min i MOST WESTERLY NORTH DS Ti � CB 14 INIT Tc = 5.00 min INIT 21AC = 0.00 OVERLAND FLOW TYPE LENGTH %SLOPE UEL TIME 6 150.00 2.00 _2.8?, 0.88 RUNOFF: POINT pS TO CB 14 Tc = 5.88 min A P E A = 0.23 acres C = 0.90 SAC = 0.21 I = 2.07 in/hr G� DESIGN = 0.47 c f s 'a' DES I GN = 2 . 50 f t sec PIPE: INVERT IN = 15.00 ft INVERT OUT = 13.60 it LENGTH = 70 . 00 it n = 0.024 DIFill = 6.00 in S.LCIF'E = 2.00 't Q FULL = 0.43 cis 'v FULL = 2.19 ft/sec FLOW TIME = 0.47 min # : : 4 *::1.:#: # :# COMB I NE FROM CB 15 ANC = 1 INIT Tr_ = 8 min ; I N I T 2 A C = rl '74r4 - OVERLAND FLOW: COMBINE FROM CB 14 AND DS ; RUNOFF; INIT Tc =-? min INIT 'AC = 1. 2ED POINT CB 14 TO CB 13 OVERLAND FLOW: Tc = 8.55 min AREA = 0.2H acre= RUNOFF r: = 0 . S 5 1.07 I = 1.76 in/hr ---------- 0 DESIGN = 1.88 cis F'OINT CB 13 TO MH 1 'v' DES I GN = 2 . 16 it/sec ' PIPE- Tc = AREA = 9.39 0. 2'6 min INVERT IN = . .14- it C = 0 85 acres INVERT OUT 8 3S yAC LENGTH =Y=�=�:a f ? 1�S•So I = 1.68 in/hr n = D I AM + . 024 14 DES I GN = 2 . 52 c f s 00 in V DE' I GN = 2.30 f t /sec SL►_lPE _ .43--5El % oos Q FALL = �'70 _ cis 4•bi PIPE: V FULL = -E� 6{ f t /sec INVERT IN FLOW TIME _ 0.84 min i If-VERT OUT LENGTH = I Cl8, . 5k1 f t --- MOST EASTERLY NORTH DS TO CB 13 n = 0 - C424 DIArt = 36.00 in SLOPE _ -e-_ 515 INIT Tc = 5-► 0 min 01 FULL cfs 4-(ot INIT EAC = 171. 4l 'd FULL = 2 f t /sec FLiiW TIME = 0 ; 9 rein OVERLAND FLOW TYPE LENGTH %SLOPE VEL TIME C:3 ( ? RUNOFF ---------- POINT DS TO i_B 13 Tc m i n _ = AREA = O . a re_ 0.90 i n/h r Q DESIGN = 0.43 cis 'a) DES I GN = 2.61 f t /sec PIPE= I N'.!ERT IN = 1171 . 97 it INVERT OUT = 10.20 it LENGTH = 35.00 it n = 0.024, DIAN = 6.00 in SLOPE _ � . 20 01 FULL = 0.45 cfs V FULL = 2.30 ft/sec FLOW TIME = 0.22 min COMBINE @ MH 1 FOR OUTFLOW INIT Tc = 12.63 min INIT ::HC = 4-42 131JERLHND FLOW RUNOFF POINT MH 1 TO E;{ I _J I NG STORM MH Tc = 12.63 min AREA = 0.00 acres C. = 0.90 ERC. = 4.42 1 = 1.43 in/hr Q DESIGN = 6.34 cf1 V DESIGN = 4.10 f t /sec PIPE: INVERT IN 8.19 INVERT OUT LENGTH = 35.00 f t r-1 = 0.024 DIHM = 18.00 in QLOF•E _ -+- 25 - 0,1/ 6, FULL V FULL = . -,T►a f t/se fj FLOW TIME - 0.14 min