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Home My WebLink AboutS-344402PROJECTED PLATE AREA.- 444Sg /ft MAXIMUM PROCESS FLOW - 41E GPM PLAN VIEW /a. em. un ms "rc 4 Plooaz In To, Seclion SWI 2 Hole For Orel. t Eem s:ds, z sores firer ceorsse "9 Mean OP ELEVATION f2d INLET I.E. - - _ a_Q -� OUTLET I.E. We( Flpe 1 I O ort P, wan ;""a To: tAln s - iPrinq 9v Before o.i e spd;msP{ STRUCTU2el NOTES IWORIMTION IEEDED. i C° re(e> 28 Dal C P Slanq' _ ($bJ, AS( Top Of SYPOI f ' n eaLOn �- 2 RE .AttMA615Cd fi0 W. Pp S S ...N ISPA A IB C Jo 65 1 1 PP EI I` 9 O R ACI MB 02 WWI, 0 fl t Plp si ASTN 0 69 "MI 1 slry I 1 N Igo ONier Pip EI q., L tlinq F U q M1d P 1 C I 2. ptltY 51 BPSIC DESIGN INFORMAibN B. A. tl N -2 }, WM1L 1 (.. 9A 1 pa t P ty$fNQ 4 ERIST105 Depth of Trench in Feet aPWCM of sp I Goo qea Goo GENERA OYES OP I 9 i mp w 1 A tlkr. d l\ To Be Pr I i re:e n1 III t ul c C 4 I 100 Pp" 1t1 Water Voth -4'q' M 010 PI15 NOu _s 3 Canl o..' 1 033 fVrn R R.I. S191" 1. l 1 N Ni PPing L S pl g To- Ufe gned Per Woetln9ten Stole Deportment Of Growl N M P"F 1.0% R11 Yhlk cfa W l PI To St c u of syelemi PL00 EfTUIEW COLLECTED, venry NI BL eROUI Saoe and Lod°OOm RATE OUAI.iTY sat A. GENERAL The amount of concrete required to anchor horizontal bends, tees, and dead ends depends on the strength of the soil. The methods of placing concrete to keep the joint accessible is shown In Figure 1. The area in square feet of concrete which must bear against the side of the trench is found by dividing the thrust in pounds shown in Table 1 by the safe Z ea... ri_ngload of the soil as shown in Table 2. B. 1317' 1. The sizing procedure is for horizontal or downward thrust only. 2. Height of the thrust block must be equal to or less than 1/2 the depth from the ground surface to the block base. 3. The thrust block bearing face is approximately rectangular. 4. The concrete blocking shall be as per APWA Specification 74 -2.14. C. SYMBOLS d = Outside Diameter of Pipe in Feet T = Thrust in Pounds at the Fitting (Table 1) SBL = Safe Bearing Load in Pounds / q. Ft. (Table 2) h = Depth of Trench in Feet W = Width of Trench in Feet A = Area of Concrete which must bear against the Side of the Trench in Sq. Ft. Hm = Maximum Height of the Thrust Block in feet Dc = Depth of the Concrete Thrust Block to Bearing Surface in Feet Lm = Maximum Length of the Thrust Block in Feet GROUND SUFACE Hm 12 + BLOCK BASE ADC W TOP SECTION No. 680CPS -T 1,490..IEs..•..... PNE TO THAN VAULT No. B60 -CPS43 6,900 rba. q._6. x 6' -e' E. EXAMPLE 1. ProbleM Calculation of the amount ofconcrete required to block a 90' bend in an 8" C.I. water main; the normal operating pressure in the pipe will be 65 psi and the soil condition in the area indicates sand and gravel. 2. Solution: - Maximum testing pressure (See Table 1) = 300 psi. = 0.75 ft. - Outside diameter of 8 pipe = 9.05 in. = 9.05/12 - Go to Table 1: The testing pressure of 300 psi, we see that the thrust on a 90' bend Is 21,360 pounds. - Go to Table 2: Table 2 gives the safe bearing load for sand and gravel: 3,000 lbs. /sq. ft. - Go to Figure 1: figure 1 indicates the position of the concrete for blocking the 90' bend. - Go to the specifications of the project and find depth of trench (h) = 4 feet - Width of trench (N) = 3 feet With the above assembled information, we proceed to the final calculations: - Area of Concrete (A) = Thrust 21,360 _ = 7.12 sq ft. Safe Bearing Load 3,000 - Maximum Height of Thrust Block (Hm) = Depth of Trench in Feet 2 = h __ 2 4 2 = 2.0ft. - Depth of Concrete Thrust Block (Dc) e Width of Trench in Feet (W) - Outside Diameter of Pipe (d) 2 = 3 -0.75 = 1.13ft. 2 - Maximum Length of Thrust Block (Lm) Area of Concrete Height of Concrete A 7.12 = 3.56 ft. Hm 2.0 - Required Amount of Concrete = (Height x Depth x Length) x 0.03704 = (Hm x Lm x Dc) x 0.03704 = (2.0 x 3.56 x 1.13) x 0.03704 = 0.30 cu. yd. D. CALCULATION EQUATIONS TABLE 1 1. Area of Concrete (A) = Thrust (In Pounds T = 22 -1/2" 11 -1/4' O�W Safe Bearing Load (In Pounds /Sq. Ft.) SBL 2. Maximum Height of Thrust Block (Hm) = Depth of Trench in Feet _ h - 830 430 4" 300 3,780 2 2 1,470 750 6" 300 8,500 (Width of Trench in Feet) - 6,510 3,320 1,700 8" 300 15,100 Outside Diameter of Pipe in Feet) W -d 3. Depth of Concrete Thrust Block = 30,570 2 8,430 4,330 12" 250 33,930 2 25,950 13,260 6,780 14" 250 46,200 Area of Concrete A 4. Maximum Length of Thrust Block (Lm) = - 34,620 17,650 9,050 18" 200 50,900 Maximum Height Hm 5. Required Amount of Concrete (Cu. Yd.) = (Height x Depth x Length) x 0.03704 24,520 12,560 24" 200 90,480 = (Hm x Lm x Dc) x 0.03704 69,200 Size Pressure PSI Thrust at Fittings in Pounds s --- _...._. Tees 90' 45' 22 -1/2" 11 -1/4' O�W The safe bearing Dead Ends Bend Bend Bend Bend 3" 300 2,120 3,000 1,630 830 430 4" 300 3,780 5,370 2,910 1,470 750 6" 300 8,500 12,000 6,510 3,320 1,700 8" 300 15,100 21,360 11,550 5,880 3,020 10" 275 21,620 30,570 16,540 8,430 4,330 12" 250 33,930 48,000 25,950 13,260 6,780 14" 250 46,200 65,370 35,340 18,030 9,240 16" 225 45,250 64,000 34,620 17,650 9,050 18" 200 50,900 72,000 38,940 19,860 10,180 20" 200 62,840 88,900 48,080 24,520 12,560 24" 200 90,480 127,980 69,200 35,320 18,100 30" 200 141,370 199,960 108,150 55,140 28,280 36" 200 203,580 287,950 155,740 79,400 40,720 CONCRETE BLOCKING PROCEDURE - :INLET PIPE 'VIM somp11n9 Too By Others A OIL /WATER SEPARATOR NOT INSTALLED. 1- ■ eq ■ s ■ 'J 1" 3/4" SQUARES SPACED - 3/4" AS INDICATED - HT. 1/8" __L 1/2" 1" RAISE -1/2" WIDE BORDER PIPE MATERIAL AS SPECIFIED BY THE ENGINEER 45' (1/8) BEND T�' CAST IRON RING AND COVER )LSD IN UNIMPROVED AREAS POUR V -0" THICK '�:''� 2' -0" SQUARE CONCRETE, CLASS 3000, PAD AROUND RING AND COVER. "" " "" '�•� "° IN ASPHALT ROADWAYS RESTORE AROUND CLEANOUT RING AND COVER AS REQUIRED BY STANDARD DETAIL DRAWING BR36. STANDARD SANITARY CLEANOUT CAP 22 -1/2 G WA 11 -1/4� 45 BEND M : 0 WSDOT STANDARD J SPECIFICATION CRUSHED SURFACING - TOP COURSE & KEYSTONE. PLUG TO BE SEALED IN SAME MANNER AS MAIN SEWER JOINTS. FOR 8" PIPE (TYP) A. THICKNESS OF A.C. PAVEMENT AND CRUSHED ROCK TO BE IN CONFORMANCE WITH THE CITY OF RENTON OR WSDOT UTILITY PERMIT. B. CONTROLLED DENSITY FILL MAY BE REQUIRED BY THE CITY OF RENTON. C. ALL JOINTS TO BE TACKED, SEALED AND SANDED. D. A.C. LIFTS SHALL BE A MINIMUM OF 0.15' AND A MAXIMUM OF 0.35'. E. ALL GRANULAR MATERIALS TO BE COMPACTED TO 95% OF MAXIMUM DENSITY (T -99 METHOD). F. SEE APPROVED PLANS AND STANDARD DRAWINGS FOR PIPE ZONE AND BACKFILL REQUIREMENTS. PAVEMENT RESTORATION FIGURE 1 NOTE: FOR CONVEX VERTICAL BENDS BLOCKING SEE S=344402 APWA STANDARD PLAN NO. 73. FOR THE CITY OF RENTON PROCEDURE FOR CONCRETE BLOCKING SIZING Aj SHEET RECONFIGURED CONCRETE CLASS 30! \WCUT (TYP) MATCH EXISTING PAVEMENT 7///7/ WSDOT STANDARD SPECIFICATION CRUSHED SURFACING BASECOURSE. TYPE "D" backfili. In n P? on m W oCD -dr- Or, om � 0 cci O pIM O O La CD 853 tS ° T( D 01 o A, I o eD N D, °D 9 1/2" STANDARD CURB DETAIL 70 - 1 1 L • S e r c .c m a SEE G V U d THESE DRAWINGS OF RECORD WERE COMPILED FROM SURVEY DATA, DATA COLLECTION BY OTHERS, AND PERIODIC OBSERVATION DURING CONSTRUCTION. IT IS SUGGESTED THAT THESE PLANS BE USED IN CONJUNCTION WITH FIELD VERIFICATION OF LOCATION AND ELEVATIONS OF IMPROVEMENTS IN QUESTION. THESE PLANS ARE AN ACCURATE RECORD OF PUBLIC IMPROVEMENTS TO THE BEST OF MY INFORMATION, KNOWLEDGE, AND BELIEF. GNATURE� �..• DATE 3 T w 7 3 of t, n m m e, O N z m 5$ 8LL G m � O a � G ry '^ o Z TABLE 2 II- Z W Ln Safe Bearina Loads i.i Lb./Sq. Ft ce ZW}0 3OZJ� O�W The safe bearing loads given in the following table are for 3 >W ~¢ horizontal thrusts when the depth of cover over the pipe exceeds 2 feet. W�MZ LLI MMI Iii m Safe Bearing Load SOIL Lb. per So. Ft. � *Muck, peat, etc. N ° 3 ° 0 CLASS "B" A.C. PAVEMENT Soft Clay 1,000 Sand Sand and Gravel 2,000 3,000 MATCH EXISTING PAVEMENT Sand and Gravel Cemented with Clay 4,000 p m O Hard Shale 10,000 W *In muck or peat, all thrusts shall be restrained by piles or tie rods to solid foundations or by removal of muck I or peat and replacement with ballast of sufficient stability to resist thrusts. CAP 22 -1/2 G WA 11 -1/4� 45 BEND M : 0 WSDOT STANDARD J SPECIFICATION CRUSHED SURFACING - TOP COURSE & KEYSTONE. PLUG TO BE SEALED IN SAME MANNER AS MAIN SEWER JOINTS. FOR 8" PIPE (TYP) A. THICKNESS OF A.C. PAVEMENT AND CRUSHED ROCK TO BE IN CONFORMANCE WITH THE CITY OF RENTON OR WSDOT UTILITY PERMIT. B. CONTROLLED DENSITY FILL MAY BE REQUIRED BY THE CITY OF RENTON. C. ALL JOINTS TO BE TACKED, SEALED AND SANDED. D. A.C. LIFTS SHALL BE A MINIMUM OF 0.15' AND A MAXIMUM OF 0.35'. E. ALL GRANULAR MATERIALS TO BE COMPACTED TO 95% OF MAXIMUM DENSITY (T -99 METHOD). F. SEE APPROVED PLANS AND STANDARD DRAWINGS FOR PIPE ZONE AND BACKFILL REQUIREMENTS. PAVEMENT RESTORATION FIGURE 1 NOTE: FOR CONVEX VERTICAL BENDS BLOCKING SEE S=344402 APWA STANDARD PLAN NO. 73. FOR THE CITY OF RENTON PROCEDURE FOR CONCRETE BLOCKING SIZING Aj SHEET RECONFIGURED CONCRETE CLASS 30! \WCUT (TYP) MATCH EXISTING PAVEMENT 7///7/ WSDOT STANDARD SPECIFICATION CRUSHED SURFACING BASECOURSE. TYPE "D" backfili. In n P? on m W oCD -dr- Or, om � 0 cci O pIM O O La CD 853 tS ° T( D 01 o A, I o eD N D, °D 9 1/2" STANDARD CURB DETAIL 70 - 1 1 L • S e r c .c m a SEE G V U d THESE DRAWINGS OF RECORD WERE COMPILED FROM SURVEY DATA, DATA COLLECTION BY OTHERS, AND PERIODIC OBSERVATION DURING CONSTRUCTION. IT IS SUGGESTED THAT THESE PLANS BE USED IN CONJUNCTION WITH FIELD VERIFICATION OF LOCATION AND ELEVATIONS OF IMPROVEMENTS IN QUESTION. THESE PLANS ARE AN ACCURATE RECORD OF PUBLIC IMPROVEMENTS TO THE BEST OF MY INFORMATION, KNOWLEDGE, AND BELIEF. GNATURE� �..• DATE 3 T w 7 3 of t, n m m e, O N z m 5$ 8LL G m � O a � G ry '^ o Z O II- Z W Ln WcnC) ° itI�0V• ce ZW}0 3OZJ� O�W <2 3 >W ~¢ o^ZUJ o�g mo0 W�MZ LLI MMI Iii m i � N ° 3 ° a ° O n DO us Z NLn m o 1 p m O W J NK N M D t` a a a r m Z � o J Y M O w m _ z B U y6 o 0 U >a m W O E 0 a 0 2 o m Fa-I JHI L. W^ 00 o W m N I t=il \ o d' m CD 'CD SHEET N0, C4.4 PACE PROJECT NUMBER 09827 DWG FILE: P09827 -DS -2