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HomeMy WebLinkAboutStorm Drainage Calculations - COM Engineering / Geo-Tech Reports - 6/19/2000 6/19/00 10: 17:44 am American Engineering Inc page 1 JACK JOHNSON CAR WASH - JOB. 09953 STORM DETENTION CALCULATIONS STORM DRAINAGE REPORT --------------------- STAGE STORAGE TABLE CUSTOM STORAGE ID No. 1 Description: DETENTION POND STAGE <----STORAGE----> STAGE <----STORAGE----> STAGE <----STORAGE----> STAGE <----STORAGE----> (ft) ---cf--- --Ac-Ft- (ft) ---cf--- --Ac-Ft- (ft) ---cf--- --Ac-Ft- (ft) ---cf--- --Ac-Ft- -------------------------------------- 98.00 0.0000 0.0000 99.10 5194 0.1192 100.20 10745 0.2467 101.30 17904 0.4110 98.10 472.15 0.0108 99.20 5666 0.1301 100.30 11396 0.2616 101.40 18555 0.4260 98.20 944.30 0.0217 99.30 6138 0.1409 100.40 12046 C.276: 101.50 19206 0.4409 98.30 1416 0.0325 99.40 6610 0.1517 100.50 12697 0.2915 101.60 19857 0.4558 98.40 1889 0.0434 99.50 7082 0.1626 100.60 13348 0.3064 101.70 20507 0.4708 98.50 2361 0.0542 99.60 7554 0.1734 100.70 13999 0.3214 101.80 21158 0.4857 98.60 2833 0.0650 99.70 8027 0.1843 100.80 14650 0.3363 101.90 21809 0.5007 98.70 3305 0.0759 99.80 8499 0.1951 100.90 15301 0.3513 102.00 22460 0.5156 98.80 3777 0.0867 99.90 8971 0.2059 101.00 15951 0.3662 102.00 22460 0.5156 98.90 4249 0.0976 100.00 9443 0.2168 101.10 16602 0.3811 99.00 4721 0.1084 100.10 10094 0.2317 101.20 17253 0.3961 ' 2. 6/19/00 10: 12:59 am American Engineering Inc page 2 JACK JOHNSON CAR WASH - JOB. #9953 STORM DETENTION CALCULATIONS STORM DRAINAGE REPORT ------------------------ STAGE DISCHARGE TABLE MULTIPLE ORIFICE ID No. 1 Description: ORIFICE DISCHARGE Outlet Elev: 98. 00 Elev: 96. 00 ft Orifice Diameter: 1.6904 in. Elev: 101. 40 ft Orifice 2 Diameter: 4 .8516 in. STAGE <--DISCHARGE---> STAGE -DISCHARGE---> STAGE -DISCHARGE---> STAGE <--DISCHARGE---> (ft) ---cfs-- ------- (ft) ---cfs-- ------- (ft) ---cfs-- ------- (ft) ---cfs-- ------- 98.00 0.0000 99.10 0.0813 100.20 0.1150 101.30 0.1409 98.10 0.0245 99.20 0.0849 100.30 0.1176 101.40 0.1430 98.20 0.0347 99.30 0.0884 100.40 0.1201 101.50 0.3471 98.30 0.0425 99.40 0.0918 100.50 0.1226 101.60 0.4328 98.40 0.0490 99.50 0.0950 100.60 0.1250 101.70 0.4990 98.50 0.0548 99.60 0.0981 100.70 0.1274 101.80 0.5551 98.60 0.0601 99.70 0.1011 100.80 0.1298 101.90 0.6048 98.70 0.0649 99.80 0.1040 100.90 0.1321 102.00 0.6499 98.80 0.0694 99.90 0.1069 101.00 0.1343 98.90 0.0736 100.00 0.1097 101.10 0.1365 99.00 0.0775 100.10 0.1124 101.20 0.1387 13 6/19/00 10: 12 :59 am American Engineering Inc page 3 JACK JOHNSON CAR WASH - JOB. #9953 STORM DETENTION CALCULATIONS STORM DRAINAGE REPORT --------------------------- STAGE DISCHARGE TABLE NOTCH WEIR ID No. lA Description: NOTCH WEIR Weir Length: 1. 1000 ft. Weir height (p) : 3 .8000 ft. Elevation : 101.80 ft. Weir Increm: 0. 10 STAGE —DISCHARGE---> STAGE <--DISCHARGE---> STAGE <--DISCHARGE---> STAGE <--DISCHARGE---> (ft) ---cfs-- ------- (ft) ---cfs-- ------- (ft) ---cfs-- ------- (ft) ---cfs-- ------- ___________________________________________________________ 101.80 0.0000 101.90 0.1120 102.00 0.3120 102.00 0.3120 6/19/00 10: 12 :59 am American Engineering Inc page 4 JACK JOHNSON CAR WASH - JOB. #9953 STORM DETENTION CALCULATIONS STORM DRAINAGE REPORT STAGE DISCHARGE TABLE COMBINATION DISCHARGE ID No. 1C Description: COMBINED DISCHARGE Structure: 1 Structure: Structure: lA Structure: Structure: STAGE <--DISCHARGE---> STAGE <--DISCHARGE---> STAGE <--DISCHARGE---> STAGE -DISCHARGE---> (ft) ---cfs-- ------- (ft) ---cfs-- ------- (ft) ---cfs-- ------ ( t) cfs-- ------- ______________________________________________________________________ 98.00 0.0000 99.10 0.0813 100.20 0.1150 101.30 0.1409 98.10 0.0245 99.20 0.0849 100.30 0.1176 101.40 0.1430 98.20 0.0347 99.30 0.0884 100.40 0.1201 101.50 0.3471 98.30 0.0425 99.40 0.0918 100.50 0.1226 101.60 0.4328 98.40 0.0490 99.50 0.0950 100.60 0.1250 101.70 0.4990 98.50 0.0548 99.60 0.0981 100.70 0.1274 101.80 0.5551 98.60 0.0601 99.70 0.1011 100.80 0.1298 101.90 0.7168 98.70 0.0649 99.80 0.1040 100.90 0.1321 102.00 0.9619 98.80 0.0694 99.90 0.1069 101.00 0.1343 98.90 0.0736 100.00 0.1097 101.10 0.1365 99.00 0.0775 100.10 0.1124 101.20 0.1387 15 6/19/00 10: 13 : 1 am American Engineering Inc page 5 JACK JOHNSON CAR WASH - JOB. #9953 STORM DETENTION CALCULATIONS STORM DRAINAGE REPORT ----------------------- LEVEL POOL TABLE SUMMARy MATCH INFLOW -STO- -DIS- <-PEAK-> OUTFLOW STORAGE <--------DESCRIPTION---------> (Cfs) (cfs) --id- --id- <-STAGE> id (cfs) VOL (cf) 6-MO. STORM .................. 0.00 0.96 1 1C 99.88 7 0.11 8893.45 cf 2-YR.\2-YR. .................. 0.00 1.56 1 1C 101.14 4 0.14 16847.22 cf 10-YR.\10-YR. ................ 0.00 2.30 1 1C 101.58 5 0.41 19699.09 cf 100-YR.\100-YR. .............. 0.00 3.28 1 1C 101.99 6 0.94 22393.39 cf Infiltration Analysis for Infiltration Pond Design Based upon soil tests done on the site, a composite sample for the site has been reduced to the following average percentages: Gravel . . . . . . . . . . . 34% Fine Sand . . . . . . . . 30% Coarse Sand . . . . . . . 10% Fines . . . . . . . . . . . . 6% Medium Sand . . . . . . 19% The USDA Soil Textural Triangle puts this in the sand category. Per Table III-3.1 of the DOE Manual (see Sheet 16B), the infiltration rate is 8.27 in/hr. After adding a 50% safety factor, Id.ip =4.14 in/hr. For design purposes, infiltration will be assumed only through the pond bottom area. Bottom area = 3600 sf Q = 0.345 cfs 16A STORMWATER MANAGEMENT MANUAL FOR THE PUGET SOUND BASIN Table III-3.1 Soil Properties Classified by Soil 'Texture u_ O• 00 C c 0 aim H •v > L d a t� 3 0 V x •�> = o 0 0 0 0 0 0 0 0 0 0 0 n n n n a u r o a x • 9 C C � m e V y O 2 m u 3 � � m SV N goN O O O C O O O O 7 1V •u E O. w . V u c a " u � u > o - •u u � u M O Y F u u u C e E E N N E V • i V w VO1 u g E u N N V] V7 C! N N v) Ci III-3-8 FEBRUARY, 1992 L � • 6/19/00 10:50:5 am American Engineering Inc page 1 JACK JOHNSON CAR WASH - JOB. #9953 STORM DETENTION CALCULATIONS STORM DRAINAGE REPORT STAGE STORAGE TABLE TRAPEZOIDAL BASIN ID No. 4 Description: INFILTRATION POND Length: 60. 00 ft. Width: 60. 00 ft. Side Slope 1: 3 Side Slope 3 : 3 Side Slope 2 : 3 Side Slope 4 : 3 infiltration Rate: 0. 00 min/inch STAGE <----STORAGE----> STAGE <----STORAGE----> STAGE <----STORAGE----> STAGE <----STORAGE----> (ft) ---cf--- --Ac-Ft- (ft) ---cf--- --Ac-Ft- (ft) ---cf--- --AC-Ft- (ft) ---cf--- --Ac-Ft- ________________________________________________________________________ 100.00 0.0000 0.0000 101.10 4412 0.1013 102.20 9790 0.2248 103.30 16232 0.3726 100.10 363.61 0.0083 101.20 4859 0.1116 102.30 10330 0.2372 103.40 16873 0.3874 100.20 734.50 0.0169 101.30 5315 0.1220 102.40 10879 0.2498 103.50 17524 0.4023 100.30 1113 0.0255 101.40 5779 0.1327 102.50 11437 0.2626 103.60 18185 0.4175 100.40 1498 0.0344 101.50 6250 0.1435 102.60 12005 0.2756 103.70 18856 0.4329 100.50 1891 0.0434 101.60 6731 0.1545 102.70 12581 0.2888 103.80 19537 0.4485 100.60 2292 0.0526 101.70 7219 0.1657 102.80 13166 0.3022 103.90 20227 0.4644 100.70 2701 0.0620 101.80 7716 0.1771 102.90 13760 0.3159 104.00 20928 0.4804 100.80 3117 0.0715 101.90 8222 0.1887 103.00 14364 0.3298 104.00 20928 0.4804 100.90 3540 0.0813 102.00 8736 0.2006 103.10 14977 0.3438 101.00 3972 0.0912 102.10 9259 0.2126 103.20 15600 0.3581 go v 6/19/00 10:50:5 am American Engineering Inc page 2 JACK JOHNSON CAR WASH - JOB. #9953 STORM DETENTION CALCULATIONS STORM DRAINAGE REPORT STAGE DISCHARGE TABLE DISCHARGE LIST ID No. 4 Description: INFILTRATION DISCHARGE STAGE <--DISCHARGE---> STAGE <--DISCHARGE---> STAGE <--DISCHARGE---> STAGE <--DISCHARGE---> (ft) ---Cfs-- ------- (ft) ---Cfs-- ------- (ft) ---Cfs-- ------- (ft) ---cfs-- ------- 100.00 0.3450 101.10 0.3450 102.20 0.3450 103.30 0.3450 100.10 0.3450 101.20 0.3450 102.30 0.3450 103.40 0.3450 100.20 0.3450 101.30 0.3450 102.40 0.3450 103.50 0.3450 100.30 0.3450 101.40 0.3450 102.50 0.3450 103.60 0.3450 100.40 0.3450 101.50 0.3450 102.60 0.3450 103.70 0.3450 100.50 0.3450 101.60 0.3450 102.70 0.3450 103.80 0.3450 100.60 0.3450 101.70 0.3450 102.80 0.3450 103.90 0.3450 100.70 0.3450 101.80 0.3450 102.90 0.3450 104.00 0.3450 100.80 0.3450 101.90 0.3450 103.00 0.3450 104.00 0.3450 100.90 0.3450 102.00 0.3450 103.10 0.3450 101.00 0.3450 102.10 0.3450 103.20 0.3450 /�D 6/19/00 10:50: 7 am American Engineering Inc page 3 JACK JOHNSON CAR WASH - JOB. #9953 STORM DETENTION CALCULATIONS STORM DRAINAGE REPORT ---------------------- LEVEL POOL TABLE SUMMARY MATCH INFLOW -STO- -DIS- -PEAK- OUTFLOW STORAGE <--------DESCRIPTION---------> (cfs) (cfs) --id- --id- <-STAGE> id (cfs) VOL (cf) ---------------------------- 2-YR. STORM .................. 0.00 0.14 4 4 100.10 7 0.14 363.61 cf 10-YR. STORM ................. 0.00 0.41 4 4 100.33 8 0.34 1229.16 cf 100-YR. STORM ................ 0.00 0.94 4 4 102.81 9 0.34 13249.52 cf 16 �' i