12955 Old Meridian St - Drainage Plan Sheet C3-1NEW BUILDING ADDITION5,940 SQ FTFINISHED FLOOR ELEVATION: 856.20PIV67LF OF 10" STM (PVC) @ 1.00%INV. 851.53INV.852.20BMP-1EXISTING DRYDETENTION BASINAND STORMWATERQUALITY MEASUREMAX WATERELEVATION: 854.40MAX WATERELEVATION: 854.45EX INLET 1EX INLET 2JPS Consulting Engineers - K:\Civil Projects\19JPSC26 Meridian Design Center\Drawings\C3-1 Grading.dwg December 17, 2019 - 12:58 PM Nvergatos
SITEGRADING ANDDRAINAGE PLAN1" = 20"NBVNBVNBVC3-1CONSTRUCTIONDOCUMENTS19 AUGUST 201919JPSC260 20 40FEETSCALE:1"=20'A. THE CONTRACTOR SHALL BE RESPONSIBLE FOR OBTAINING, ANDVERIFYING, THAT ALL PERMITS AND APPROVALS ARE OBTAINEDFROM THE RESPECTIVE CITY, COUNTY, STATE AND FEDERALAGENCIES PRIOR TO STARTING CONSTRUCTION.B. CONTRACTOR SHALL VERIFY LOCATION AND INVERT ELEVATIONS OFEXISTING SEWERS PRIOR TO START OF CONSTRUCTION.C. CONTRACTOR SHALL MAINTAIN A COMPLETE AND OPERABLE UTILITYSYSTEM AT ALL TIMES.D. CONTRACTOR SHALL INCLUDE COSTS FOR CUTTING AND PATCHINGAS REQUIRED IN THEIR BID PROPOSAL TO COMPLETELY INSTALL THEWORK INDICATED.E. CONTRACTOR SHALL INCLUDE ALL TAP FEES, PERMIT FEES ANDAPPLICATION FEES IN THEIR BID PROPOSAL AS NECESSARY TOCOMPLETELY INSTALL THE WORK INDICATED.F. INFORMATION SHOWN WAS OBTAINED FROM AN OWNERFURNISHED SITE SURVEY OF EXISTING CONDITIONS AND ISUNCONFIRMED. CONTRACTOR IS REQUIRED TO FIELD VERIFY THISINFORMATION AND NOTIFY ARCHITECT OF ANY DISCREPANCIES SOMODIFICATION CAN BE MADE.G. CONTRACTOR SHALL COORDINATE EXACT UTILITY LOCATIONS WITHTHE OWNER AND LOCAL UTILITY COMPANIES PRIOR TOCOMMENCING ANY WORK. UTILIZE THE INDIANA UNDERGROUNDUTILITY LOCATION SERVICE AT 811 OR 800-382-5544 PRIOR TO ANYEXCAVATION ON THE SITE.GENERAL NOTESPLAN NOTES1. ADJUST CASTING TO NEW ELEVATION.2. REFER TO PLUMBING DRAWINGS FOR CONTINUATION.3. NEW AQUASWIRL AS-4 UNIT ON EXISTING STORM PIPE. INVERT TO BE850.34±. TOP OF CASTING AS INDICATED. REFER TO DETAIL.4. CONTRACTOR TO VAC OUT AND CLEAN ALL EXISTING INLETS ANDPIPES ON THE SITE THAT ARE TO REMAIN.OLD MERIDIAN RENOVATIONMINIMUM FLOOD PROTECTION GRADE (MFPG)=825.70LOWEST ADJACENT GRADE (LAG)= 825.70MFPG=MINIMUM FLOOD PROTECTION GRADE SHALL BE NO LESS THAN 2FEET ABOVE ANY ADJACENT 100-YEAR LOCAL OR REGIONAL FLOODELEVATIONS, WHICHEVER IS GREATER, FOR ALL WINDOWS, DOORS, PIPEENTRANCES, WINDOW WELLS, AND ANY OTHER STRUCTURE MEMBERWHERE FLOODWATER CAN ENTER A BUILDING.LAG=THE LOWEST ADJACENT GRADE IS THE ELEVATION OF THE LOWESTGRADE ADJACENT TO A STRUCTURE, WHERE THE SOIL MEETS THEFOUNDATION AROUND THE OUTSIDE OF THE STRUCTURE (INCLUDINGSTRUCTURAL MEMBERS SUCH AS BASEMENT WALKOUT, PATIOS, DECKS,PORCHES, SUPPORT POSTS OR PIERS, AND RIM OF THE WINDOW WELL).DRAINAGE NOTESOVERFLOW ROUTE FLOW DIRECTIONCONSTRUCTION/GRADINGLIMITSOVERFLOW PATHSYMBOLSTHE DRAINAGE DESIGN WILL INVOLVE THE REUSE OF THE EXISTINGDRAINAGE SYSTEM AND THE MAINTENANCE OF EXISTING DRAINAGEPATTERNS. ALL RUN-OFF WILL BE COLLECTED INTO THE EXISTINGDRAINAGE SYSTEM AND RUN INTO THE EXISTING DETENTION BASIN ANDSTORMWATER QUALITY MEASURE. AN ADDITIONAL STRUCTURALSTORMWATER QUALITY MEASURE WILL BE INSTALLED TO TREAT THE NEWIMPERVIOUS AREA. EXISTING IMPERVIOUS AREAS WILL CONTINUE TODRAIN AS PREVIOUSLY. SINCE TOTAL RUN-OFF GENERATED BY THE SITE ISLESS THAN EXISTING AND THE EXISTING SITE HAS ITS STORMWATERQUANTITY CONTROLLED BY AN EXISTING DETENTION BASIN, NOADDITIONAL DETENTION IS NECESSARY. ADDITIONAL INFORMATION ISPROVIDED IN THE DRAINAGE REPORT.DRAINAGE SUMMARYSITE DISCHARGE SECTIONEXISTING INLETSTRUCTURENEW 10"ROOF DRAINEXISTING 12" RCP PIPEDISCHARGES TO DRY DETENTION BASININV. 851.53EX. INV. 850.58EXISTING DETENTION BASIN AND STORMWATER QUALITY MEASURE TO BEUTILIZED.APPROXIMATE DIMENSIONS OF EXISTING FACILITY:AREA: 0.07acLENGTH: 86ftWIDTH: 36ftAPPROXIMATE VOLUME OF EXISTING FACILITY: 0.35ac-ftDETENTION FACILITYDRAINAGE DIRECTIONNEW BMPEASEMENT