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Home My WebLink AboutC3.0.Grading PlanF.F.E. = 755.70 (NAVD 88 DATUM) Equality Blvd.Community DriveDETENTION SWALE WITH WHITE RIVER AT FLOOD STAGE 100-YEAR BASE FLOOD ELEVATION = 751.57 (NAVD 88 DATUM) 100-YEAR BASE FLOOD ELEVATION = 752.00 (NGVD 29 DATUM) A/C A/CEXISTING 12" PVC ROOF DRAIN PIPE202 200 PROPOSED GYM & LEARNING CENTER 13,000± S.F. F.F.E. = 755.70 (NAVD 88 DATUM) F.F.E. = 755.70 (NAVD 88 DATUM) EXISTING CURB INLET (RAISE EX. CASTING ELEVATION TO PROPOSED GRADE) T.C. = 753.50 GUT = 753.00 INV. = 748.1± (18" PVC - N) INV. = 748.1± (EX. 12" - E) INV. = 748.0± (EX. 18" - S) EXISTING CURB INLET T.C. = 754.21 GUT = 753.71 INV. = 749.3± (EX. 12" - N) INV. = 749.2± (EX. 15" - S) EXISTING CONC. END SECTION INV. = 747.5± (EX. 18" RCP - N) 600 601 100 101 102 103 CONNECT 6" PVC DRAIN TO EX. ROOF DRAIN PIPE E2 EXISTING STORM INLET T.C. = 753.35 INV. = 748.65± (EX. 12" PVC - NE) INV. = 748.5± (EX. 12" RCP - W) INV. = 748.15± (10" PVC - SE) STORM MANHOLE - 4'Ø T.C. = 754.50 INV. = 749.17± (EX. 15" - NE) INV = 749.2± (12" PVC - S) INV. = 749.07 (15" RCP - W) E1 EXISTING CURB INLET T.C. = 754.15 GUT = 753.65 INV. = 749.34± (EX. 12" - S) EXISTING END SECTION INV. = 745.06± (E - 40" RCP) STORM MANHOLE - 4'Ø T.C. = 755.60 INV. = 748.63 (15" RCP - E) INV. = 748.53 (15" RCP - S) CURB INLET MANHOLE - 4'Ø T.C. = 753.25 GUT = 752.75 INV. = 748.27 (15" RCP - N) INV. = 748.17 (18" RCP - SE) 4'Ø CURB INLET MANHOLE w/ 2' SUMP T.C. = 752.50 GUT = 752.0 INV. = 747.79 (18" RCP - NW) INV. = 747.69 (18" RCP - S) CONCRETE END SECTION w/ RIP-RAP. SEE DETAIL 18/C7.0 INV. = 747.57 126 L.F. of 18" RCP @ 0.30%48 L.F. of 18" RCP @ 0.24%114 L.F. of 15" RCP @ 0.23%177 L.F. of 15" RCP @ 0.25% 12± L.F. of EX. 15" RCP R6 R18 RD CDR10 R10R6 R8 EXISTING SCHOOL BUILDING MLAG/MFPG = TOP OF CURB = 754.45 EXISTING FIRE SERVICE LINE TO BE LOWERED AT STORM SEWER CROSSING 6" NDS #918B YARD DRAIN T.C.=754.5± 15± L.F. of 6" SDR35 PVC 30' T T EXISTING 40" RCPEXISTING 18" RCPRD R12 RCO RCO RCO R12 R18 C C R12 R8 RD R6 R6 R8 R12 30' DRAINAGE ESMT.4 4 4 PROJECT NUMBER DRAWING NUMBER SHEET OF SCALE: DATE: DWN BY: CHKD. BY:CIVIL SITE GROUP, INC. GROUP, INC.PROF E SS ION A L E NG INEERIND IA NA PE10910647 STATE OF -o NREG I S TER E DBR IA N S CR O S STPS.007 C3.0NOBLESVILLE, INDIANA 4606015575 STONY CREEK WAYTHE PLAY SCHOOL at LEGACY, INC.GRADING & DRAINAGE PLANTHE PLAY SCHOOL at LEGACY SPORT COURT14454 COMMUNITY DRIVECARMEL, INDIANA 46033REVISION RECORD 06/22/2018 CONTRACTOR NOTE NO EARTH DISTURBING ACTIVITY MAY COMMENCE WITHOUT AN APPROVED STORM WATER MANAGEMENT PERMIT. TOPOGRAPHIC & BOUNDARY NOTE BUILDING NOTE REFER TO ARCHITECTURAL & FOUNDATION PLANS FOR ALL BUILDING DIMENSIONS. UTILITY LOCATE NOTE LEGEND: PLAN NOTES: R8 C GRADING NOTES The project proposes a new 13,000 sf ± gymnasium and STEM learning building to the existing Play School site with associated road, sidewalk, and playground hard surface. This project is located at the southwest corner of the intersection of Equality Blvd. and Community Drive in Hamilton County, Indiana. The entire Play School property totals 2.01± acres; however, the proposed construction activity associated with the building, hard surface, and landscaping will be disturbing approximately 1.7± acres. The site lies within the Legacy Planned Development with the storm water management being master planned and approved in October, 2012, to include storm water detention and post construction stormwater quality BMPs. The Play School site lies within the watershed area of Basin 122 with an allowable Post-Developed CN=94 and Tc=5. The proposed improvements to the existing Play School site increase the composite CN value to only 87 with a TC of 8.4 minutes (storm system TC). Therefore, the proposed stormwater discharge from the developed site will be substantially less than the allowable discharge approved as part of the Legacy Development master plan. Storm water runoff from the proposed construction activity associated will be collected via existing storm water catch basins with sub-surface storm sewer pipes routed to the existing detention swale located south of the subject site. Storm water is conveyed to the East into a constructed wetland BMP "CW1" and subsequently into detention area DD10. Post Developed release rates: 2yr = 6.57cfs; 10yr = 9.87cfs; 100yr = 13.91cfs DRAINAGE SUMMARY GENERAL NOTES MINIMUM FLOOD PROTECTION GRADE & LOWEST ADJACENT GRADE DEFINITIONS We have shown multiple top-of-curb grades along Equality Blvd. The lowest of each is 754.45 (Community Drive T.O.C.). The 100-year base flood elevation of the White River is 751.57 (NAVD 88); 752.00 (NGVD 29) based on the published FEMA FIRM maps. We have set the F.F.E. at 15" above the Equality Blvd. grade, which is 755.70 (matches existing building F.F.E.). The local flood overflow route for the storm inlets is 754.69. One foot (1') above that would also coincide with an MLAG of 755.69. Therefore the MLAG/MFPG has been set at 755.70'. The conversion equation from NGVD to NAVD datum is: NGVD - 0.43' = NAVD. GENERAL NOTES CONTRACTOR TO KEEP EXISTING PAVEMENT SURROUNDING THE SITE (I.E. COMMUNITY DRIVE & EQUALITY BLVD.) "BROOM CLEAN" AND FREE OF SOIL OR AGGREGATE THAT MIGHT BE BROUGHT OFF-SITE. DEPENDING ON THE CONSTRUCTION SEASON, MOISTURE CONTENT AND PROPERTIES OF THE SOILS ON SITE, CHEMICAL MODIFICATIONS AND/OR LIME STABILIZATION MAY BE REQUIRED. SEE SHEET C9.0 FOR SPECIFICATIONS. ALL CONCRETE PIPE JOINTS SHALL BE CONTINUOUS O-RING RUBBER GASKET CONFORMING TO ASTM C 443 CONTRACTOR (NOT THE PROJECT SITE OWNER) WILL BE RESPONSIBLE FOR THE DISPOSAL OF ANY SOIL, MATERIALS, ETC. NO OFF-SITE BORROWS OR STOCKPILES WILL BE NEEDED FOR THIS PROJECT. R10 R12 T 4CD RD RCO R6 R18 04/01/19