HomeMy WebLinkAboutTPS005.C3.0.Grading PlanF.F.E. = 755.70
(NAVD 88 DATUM)
Simplicity PkwyCommunity DriveP
C
DRDR
R1
R1
R1
R1
R1
EXISTING BEEHIVE INLET
T.C. = 753.35
INV. = 748.65± (EX. 12" PVC - NE)
INV. = 748.5± (EX. 12" RCP - W)
INV. = 748.15± (10" PVC - E)
MLAG/MFPG = 753.15 + 1.25 = 754.40
EXISTING SCHOOL
BUILDING
F.F.E. = 755.70
DETENTION 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/C
EXISTING
PLAYGROUND
EXISTING SCHOOL
BUILDING
2% MAX
2% MAX
2% MAX
202 200
R1
EXISTING CONC. END SECTION
INV. = 745.06 (EX. 40" RCP - E)
EXISTING CURB INLET
T.C. = 752.5±
GUT = 752.0±
INV. = 748.0± (EX. 15" RCP - N)
INV. = 748.1± (EX. 12" RCP - E)
INV. = 748.0± (EX. 18" RCP - S)
EXISTING 6" NDS DECK DRAIN
T.C. = 755.1±
INV. = 752.5± (EX. 6" SCH40 PVC - S)
60 LF OF 18" RCP @ 1.05%
EXISTING CONC. END SECTION
INV. = 747.5± (EX. 18" RCP - N)EXISTING 18" RCPEXISTING STORM WATER
SWALE / DETENTION
18 " OF VERTICAL SEPARATION MUST
BE MAINTAINED FOR ALL UTILITY
CROSSINGS.
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
SSTPS.005
C3.0NOBLESVILLE, INDIANA 4606015575 STONY CREEK WAYTHE PLAY SCHOOL at LEGACY, INC.GRADING & DRAINAGE PLANPLAY SCHOOL at LEGACY - CLASSROOM ADDITION14454 COMMUNITY DRIVECARMEL, INDIANA 4603302/16/2018
CONTRACTOR NOTE
NO EARTH DISTURBING ACTIVITY MAY COMMENCE
WITHOUT AN APPROVED STORM WATER MANAGEMENT PERMIT.
ALL CONCRETE PIPE JOINTS SHALL
BE CONTINUOUS O-RING RUBBER
GASKET CONFORMING TO ASTM C 443
TOPOGRAPHIC & BOUNDARY NOTE
BUILDING NOTE
REFER TO ARCHITECTURAL &
FOUNDATION PLANS FOR ALL
BUILDING DIMENSIONS.
REVISION RECORD
PLAN NOTES:
R1
C
GRADING NOTES
The project proposes a new 2,500 sf ± building addition to the existing Play School Building with
associated patio, 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 0.24± 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 76 with a TC of 14 minutes (existing 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 = 3.15cfs; 10yr = 4.81cfs; 100yr= 6.89cfs
DRAINAGE SUMMARY
BENCHMARK
LEGEND:
GENERAL NOTES
MINIMUM FLOOD PROTECTION GRADE &
LOWEST ADJACENT GRADE DEFINITIONS
We have shown multiple existing top-of-curb grades on Community Drive. The lowest of each
is 753.15 (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. The
MFPG / MLAG would be the highest of (1.) 15" above the top of curb grade or (2.) 2' above the
100-year base flood elevation. The curb elevation would control in this situation; therefore, the
MFPG / MLAG has been set at 754.40. We have set the F.F.E. of the building addition at
755.70 (matches existing building F.F.E.) which is 1.30' above the MFPG / MLAG. It should
be noted that all elevations noted here are referenced to the NAVD 88 datum.
The conversion equation from NGVD to NAVD datum is: NGVD - 0.43' = NAVD
P
DR
UTILITY LOCATE NOTE
UTILITY VALVE NOTE
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.
EXISTING CONDITIONS NOTE
CONTRACTOR TO VERIFY ALL EXISTING
CONDITIONS, INCLUDING UTILITIES AND
DRAINAGE INFRASTRUCTURE BEFORE
COMMENCING WITH CONSTRUCTION.
CONTRACTOR TO NOTIFY ENGINEER OF
ANY DISCREPANCIES.
FLOOD NOTE
STORM SEWER SYSTEM NOTE
ALL STORM SEWER INFRASTRUCTURE TO BE
CONSTRUCTED WITH THIS PROJECT SHALL BE PRIVATELY
OWNED AND MAINTAINED BY THE PLAY SCHOOL
05/23/18