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HomeMy WebLinkAboutCT 02-23; VILLAGES OF LA COSTA GREENS 1.08; SEWER STUDY; 2003-09-22HUNSAKER ^ASSOCIATES SAN DIECO, PtANNING ENGINEERING SURVEYING IRVINE LOSANGELES RIVERSIDE SAN DIEGO SEWER STUDY for LA COSTA GREENS VILLAGE 1.8 City of Carlsbad Prepared for Morrow Development 1903 Wright Place Suite 180 Carlsbad, CA 92008 w.o. 2352-67 September 22, 2003 Hunsaker & Associates San Diego, Inc. DAVE HAMMAR LEX WILLIMAN ALISA VIALPANDO 10179 Huennekens St, San Diego, CA 92121 (858) 558-4500 PH (858) 558-1414 FX www,HunsakerSD,com lnfo@HunsakerSD.com (aymond L. Martin, R.C.E Project Manager 53 SJ:kc msword\h:\reports\2352\067\sewer study\a01.doc wo 2352-67 9/22/2003 11:46 AM09/22/03 La Costa Greens Village 1.8 Sewer Study TABLE OF CONTENTS SECTION Design Criteria I Sewer Study Summary II Sewer Study Map III SJ:kc msword\h:\reports\2352\067\sewer study\a01 doc wo 2352-67 9/22/2003 11:43 AIVI09/22/03 La Costa Greens Village 1.8 Sewer Study Design Criteria Dwelling Units 82 Demand 220 gal/cap/day Peak Factor 2.5 Maximum Depth 0.50 diameter Roughness, n 0.011 for PVC Sample Calculation Peak Flow = Dwelling Units x Demand x Peak Factor Peak Flow = 82 units x 220 gai/unitday x 2.5 (1 cfs \ 646,300^^'/day ) Peak Flow = 0.0698 cfs SJ:kc msword\h:\reports\2352\067\sewer study\a01 .doc wo 2352-67 9/22/2003 12:00 PM09/22/03 La Costa Greens Village 1.8 Sewer Study Results La Costa Greens. Villaqe 1.8 w.o. 2352-0067 BY: Steve Jerrick SEWER STUDY SUMMARY DATE 9/20/2003 REFERTO PLAN SHEET: LINE FROM TO POPULATION PER D.U. IN- LINE D.U.'S POPULATION SERVED PEAK /AVC. RATIO PEAK DESIGN FLOW LINE SIZE (INCHES) DESIGN SLOPE (%) dn (FEET) dn/D VELOCITY (F.P.S,) COMMENTS LINE FROM TO POPULATION PER D.U. IN- LINE D.U.'S IN-LINE TOTAL PEAK /AVC. RATIO M.G.D, C.F.S. LINE SIZE (INCHES) DESIGN SLOPE (%) dn (FEET) dn/D VELOCITY (F.P.S,) COMMENTS 1 9 8 2.75 6 16.5 16.5 2.5 0.003 0.005 8 11.5 0.02 0.03 1.66 ** 2 8 7 2.75 6 16.5 33 2.5 0.007 0.010 8 12.35 0.03 0.04 2.19 3 7 6 2.75 2 5.5 38.5 2.5 0.008 0.012 8 8.5 0.03 0.04 2.55 4 CO 16 2.75 5 13.75 13.75 2.5 0.003 0.004 8 5.24 0.02 0.03 1.39 ** 5 16 15 2.75 7 19.25 33 2.5 0.007 0.010 8 7.35 0.03 0.04 2.19 6 15 14 2.75 5 13.75 46.75 2.5 0.009 0.014 8 10.23 0.03 0.05 2.21 7 13 14 2.75 6 16.5 16.5 2.5 0.003 0.005 8 2 0.03 0.04 1.09 ** 8 14 6 2.75 0 0 63.25 2.5 0.013 0.020 8 2 0.05 0.07 1.82 9 6 5 2.75 4 11 112.75 2.5 0.023 0.035 8 7.43 0.05 0.07 3.24 10 12 11 2.75 4 11 11 2.5 0.002 0.003 8 3.63 0.02 0.03 1.11 ** 11 11 5 2.75 1 2.75 13.75 2.5 0.003 0.004 8 3 0.03 0.04 0.91 ** 12 5 4 2.75 2 5.5 132 2.5 0.026 0.041 8 7.82 0.05 0.08 3.13 SJ:kc msword\h:\reports\2352\067\sewer study\a01 .doc wo 2352-67 9/22/2003 11:43 AM09/22/03 La Costa Greens Village 1.8 Sewer Study FOR: La Costa Greens, Villaqe 1.8 W.O. 2352-0067 BY: Steve Jerrick SEWER STUDY SUMMARY DATE 9/20/2003 REFER TO PLAN SHEET: LINE FROM TO POPULATION PER D.U. IN- LINE D.U.'s POPULATION SERVED PEAK /AVC. RATIO PEAK DESIGN FLOW LINE SIZE (INCHES) DESIGN SLOPE (%) dn (FEET) dn/D VELOCITY (F,P,S.) COMMENTS LINE FROM TO POPULATION PER D.U. IN- LINE D.U.'s IN-LINE TOTAL PEAK /AVC. RATIO M.G.D. C.F.S, LINE SIZE (INCHES) DESIGN SLOPE (%) dn (FEET) dn/D VELOCITY (F,P,S.) COMMENTS 13 CO 10 2.75 6 16.5 16.5 2.5 0.003 0.005 8 2.56 0.03 0.04 1.09 ** 14 10 4 2.75 4 11 27.5 2.5 0.006 0.009 8 2.35 0.03 0.05 1.30 ** 15 CO 4 2.75 4 11 11 2.5 0.002 0.003 8 2 0.03 0.04 0.73 •k* 16 4 ex 2.75 0 170.5 2.5 0.034 0.053 8 2 0.08 0.12 2.22 ** 17 3 2 2.75 7 19.25 19.25 2.5 0.004 0.006 8 1.6 0.03 0.05 0.91 * 18 2 1 2.75 8 22 41.25 2.5 0.008 0.013 8 1.61 0.04 0.06 1.50 * 19 CO 1 2.75 5 13.75 13.75 2.5 0.003 0.004 8 3.82 0.02 0.03 1.39 ** 20 1 ex 2.75 0 0 55 2.5 0.011 0.017 8 2 0.05 0.07 1.58 ** Velocities are slightly less than 2 FPS where slopes are less than 2% due to the following constraints: 1. Existing access hole elevation; and, 2. Maintain current street slope and minimum depth of sewer main in adjacent proposed streets in order to keep proper vertical clearances. Velocities are slightly less than 2 FPS; however, minimum slope of 2% maintained. SJ:kc msworcJ\h:\reports\2352\067\sewer study\a01.doc wo 2352-67 9/22/2003 11:43 AM09/22/03 Ri\03a6\8.Eng\Exhibits\SEWER STUDY EXHIBIT.dwgC 20713Sep-aa-2003!lli23