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FINISHED GRADE,SEE <br /> PLANS IC A <br /> ____/—SPECIFICATIONS <br /> _i,....—„, <br /> t - <br /> L <br /> - z _ J <br /> PVC PIPE AS REQUIRED <br /> / _ <br /> IMINIIM <br /> TEE — -n FLOW <br /> \4.) <br /> — SEE TABLE 3 FOR RISER _ — <br /> (OVERFLOW)HEIGHT _ <br /> ABOVE DETENTION PIPE <br /> _FLOW 7»4 — INVERT ELEVATION — <br /> 0%SLOPE ` <br /> A <br /> SAND COLLAR /6 IMMI <br /> SECURE WITH 8 GA OR GROUT <br /> 18"MIN ALUMINUM DETENTION PIPE <br /> SUMP BELOW — STRAP.BOLT TO CB LENGTH PER TABLE 3 <br /> OUTLET PIPE WALL WITH STEEL <br /> ANCHOR BOLTSI. <br /> ORIFICE SIZE PER TABLE 3, TYPE 1L CB FOR 18"OR <br /> SEE NOTE 5 SMALLER DETENTION <br /> PIPES OTHERWISE USE <br /> TYPE 2 CB <br /> ELEVATION <br /> NOTES <br /> FINSHED 1. DETENTION STRUCTURE SHALL BE FABRICATED <br /> GRADE FROM ONE OF THE FOLLOWING: <br /> A. CORRUGATED ALUMINUM PIPE,12 GAUGE <br /> MINIMUM. <br /> ;. � COMPACT IN 8"LIFTS B. HIGH DENSITY POLYETHYLENE PIPE. <br /> `.1 TO 90%MAX DENSITY <br /> C. CORRUGATED POLYETHYLENE STORM <br /> ',,./,%,.; £ f f ;.°N.,,. SEWER PIPE. <br /> Fv — :> • 1 a' ,,,,C/"' ,� ,; D. STEEL RIB REINFORCED POLYETHYLENE PIPE. <br /> <-1 2 ` r,,„ - a , r°,, ,2 DETENTION PIPE DIA <br /> z "• ' a/ 3w PER PLANS 2. ANNUAL INSPECTIONS AND CLEANING <br /> s 4 N ," '''' , .t; REQUIRED BY OWNER TO ENSURE PROPER <br /> " CZ '``" s i'' `'`j OPERATION OF DETENTION SYSTEM. <br /> c ? RAT ., l/., f/ <br /> 1 , 1'f \ ' _z 3. W=MAXIMUM WIDTH OF TRENCH FOR <br /> '' = ¢ ' .,% , 2 PIPE/VAULT PER MANUFACTURER <br /> w. <br /> & D m /-' > '''1 ;>,,. INSTALLATION INSTRUCTIONS. <br /> - - j s, (- rjq 4. COMPACT IN 8"LIFTS TO 90%MAX DENSITY. <br /> o <br /> �` ) s f" p/ 5. ORIFICE SHALL BE INSTALLED ON REMOVABLE <br /> s CAP TO ALLOW FOR MAINTENANCE. <br /> E L" W <br /> € (SEE NOTE#3) ` 6. PROVIDE FLOATABLE MATERIAL SEPARATOR <br /> WITH GAS TRAP DOWNSTREAM OF FLOW <br /> CONTROL STRUCTURE,PRIOR TO DISCHARGE <br /> SECTION A-A TO THE SEWER. <br /> R <br /> m UNDERGROUND <br /> 0y C 3200 Cedar Street <br /> ffi EVE T T Everett WA98201 <br /> in425.2578800 everettwa.9av DETENTION SYSTEM <br /> limo PUBLIC WORKS FOR SMALL PROJECTS <br />