Resolutions-1997-021

MANKHOLE FRAME AND LID TO BE NEENAH PSI-FF SELF SEALING OR APPROVED EQUAL. IF IN PAVED AREA, CASTING SHALL ALSO BE NON-ROCKING. CRETEX INTERIOR CHIMNEY SEAL OR APPROVED EQUAL FOR ALL MANHOLES CONCRETE RINGS AS REQUIRED TO MIN. OF 4" TO MEET GRADE WITH 2" MAX. HEIGHT OF SPACER RINGS, INCLUDING MANKHOLE FRAME. SEAL WITH A-LOK SEAL MASTIC OR APPROVED EQUAL. FLAT TOP STEP MA INDUSTRIES PSI-FF APPROVED EQUAL STEPS ARE NOT REQUIRED IN STORM SEWER MANKHOLE, LESS THAN 3 FEET DEEP. JOINTS TO BE CONFINED O-RING GASKET MEETING ASTM C-443 4" FOR ≤ 21" PIPE 5" FOR >21" PIPE PRECAST CONCRETE SECTIONS CONFORMING TO ASTM C-478 USE A-LOK SEAL OR APPROVED EQUAL WHERE PIPE PASSES THROUGH THE MANKHOLE WALL. TYPICAL SANITARY SEWER AND STORM SEWER MANKHOLE 6' OR LESS IN DEPTH FIGURE 8.2