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NOTES <br /> 1. AS ACCEPTABLE ALTERNATIVES TO THE REBAR <br /> SHOWN IN THE PRECAST BASE SECTION, FIBERS ` <br /> (PLACED ACCORDING TO THE STANDARD PIPE ALLOWANCES <br /> SPECIFICATIONS), OR WIRE MESH HAVING A MINIMUM <br /> i AREA OF 0.12 SQUARE INCHES PER FOOT SHALL BE <br /> a USED WITH THE MINIMUM REQUIRED REBAR SHOWN MAXIMUM <br /> IN THE ALTERNAa) TIVE PRECAST BASE SECTION. WIRE PIPE MATERIAL INSIDE <br /> _cao MESH SHALLNOT BE PLACED IN THE KNOCKOUTS. DIAMETER <br /> a 2. THE KNOCKOUT DIAMETER SHALL NOT BE GREATER <br /> THAN 20". KNOCKOUTS SHALL HAVE A WALL REINFORCEDOR 12" <br /> THICKNESS OF 2" MINIMUM TO 2.5" MAXIMUM_ PLAIN CONCRETE <br /> PROVIDE A 1.5" MINIMUM GAP BETWEEN THE <br /> co <br /> KNOCKOUT WALL AND THE OUTSIDE OF THE PIPE. ALL METAL PIPE 15" <br /> AFTER THE PIPE IS INSTALLED, FILL THE GAP WITH <br /> JOINT MORTAR IN ACCORDANCE WITH STANDARD <br /> °' WSDOT SPECIFICATION 9-04.3. CPSSP * 12" <br /> (WSDOT STD. SPEC. 9-05.20) <br /> N 3. THE LOWESTTHE MDEPTH FROM THE PIPE INVERT SHALL BEI5'. GRADE TO SOLID WALL PVC 15" <br /> (WSDOT STD. SPEC. 9-05.12(1)) <br /> 4. THE FRAME AND GRATE MAY BE INSTALLED WITH <br /> PROFILE WALL PVC 15" <br /> THE FLANGE UP OR DOWN. THE FRAME MAY BE <br /> 6CAST INTO THE ADJUSTMENT SECTION. (WSDOT STD. SPEC. 9-05.12(2)) <br /> �' 5. THE PRECAST BASE SECTION MAY HAVE A ROUNDED �kSTO CORRUGATED POLYETHYLENE <br /> o FLOOR, AND THE WALLS MAY BE SLOPED AT A RATE STORM SEWER PIPE <br /> 0 OF 1:24 OR STEEPER. <br /> 1— <br /> cn <br /> 6. THE OPENING SHALL BE MEASURED AT THE TOP OF <br /> TTHE PRECAST BASE SECTION. <br /> `` 7. ALL PICKUP HOLES SHALL BE GROUTED FULL AFTER <br /> 3 THE BASIN HAS BEEN PLACED. <br /> 0 <br /> i <br /> 0 <br /> 0 <br /> 0 // `N► <br /> 0 /. <br /> I-- <br /> (11 <br /> i <br /> I— <br /> z r <br /> w <br /> CC <br /> 11 <br /> 0 <br /> #0 <br /> 3 BAR EACH CORNER <br /> 18" MIN. <br /> E <br /> I 0 <br /> > <br /> a)0 <br /> o <br /> #3 BAR HOOP <br /> 0 <br /> N <br /> a <br /> (/) <br /> N <br /> C <br /> O <br /> SEE NOTE 1 <br /> ALTERNATIVE PRECAST BASE SECTION <br /> CnN <br /> N <br /> 0 <br /> W WSDOT STD PLAN B-5.20, TYPE 1 <br /> o ACCEPTABLE SUBSTITUTE <br /> 0 <br /> I <br /> CITY OF EVERETT CATCH BASIN TYPE A CITY 2016 <br /> "�' DEPARTMENTS SHEET-OF--2 402 <br /> Q COE Std Dwq: <br /> i <br /> i. <br /> Mifi, <br />