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HomeMy Public PortalAboutPrecastConcreteStormwaterStructuresP ECAST C \CRE ST ' RMWA ER ST LC MINIMUM DISTANCE FLOWLINE TO TOP OF STONE OR GRATE L ES PIPE I.D. NOMINAL INCHES AREA INLET CIRCULAR 42" (2) GRATE INLET SQUARE (MAX.) SINGLE STREET INLET CIRCULAR BASE DIA. 42" 48" 60" BASE DIA. 48" 60" CIRCULAR BASE DIA. RECTANGLE 42" 48" 60" (MAX.) 12" 45" 38" 31" 48" 41" 15" 48" 41" 34" 51" 44" 18" 52" 44" 37" 55" 48" 21" 55" 47" 40" 58" 51" 24" 58" 51" 44" 61" 54" 27" 78" 71" NA 81" NA 30" 82" 74" NA 85" NA 33" 85" 77" NA 88" NA (SEE SHEET 34 FOR DETAIL) NOTES: (SEE SHEET 35 FOR DETAIL) (SEE SHEET 36 FOR DETAIL) 1) 48" DIAMETER BASE REQUIRES 7" HIGH TRANSITION SECTION TO 42" DIAMETER, SIMILAR TO "ADAPTER RING" SHEET 34. 2) 60" DIAMETER BASE REQUIRES 24" HIGH ECCENTRIC REDUCER TRANSITION TO 42" DIAMETER, SIMILAR TO "ADAPTER RING" SHEET 34. 3) STANDARD DEPTH = 3'+ PIPE DIAMETER. PRECAST CONCRETE STORMWATER STRUCTURES METROPOLITAN ST. LOUIS SEWER DISTRICT Standard Details of Sewer Construction Dr. J.L.G. Ch. J.C.K. 2009 SHEET 33