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HomeMy Public PortalAboutCastIronManholeCovers(LockType)NOTES: 1) USE APPROVED BUTYL RUBBER PREFORMED MASTIC SEALANT OR APPROVED SELF-SEALING GASKET BETWEEN COVER AND FRAME. 2) PROVIDE 1/8" RAISED LETTERING APPROXIMATELY 3/4" TO 1" HIGH. B1: METRO ST. LOUIS B2: SEWER DIST. SEWERS 3" RECESS 5/8" TYPICAL FOR THREE HOLES (3) CORE HOLES ON AN 18-3/4" DIAMETER BOLT CIRCLE FOR (3) TYPE "N" CAM LOCKS, 120° APART. USE 7/8"-9 x 3-1/2" N.C. 18-8 HEX HEAD STAINLESS STEEL BOLTS AND WASHERS. HOLES AT 120. NOTE "B1" TYPE "T" TYPE "N" NOTE "B1" NOTE "B2" SEE SHEET 55 FOR LOCKING DEVICE. (2)-CONCEALED PICKHOLES AT 180°. SEE SHEET 56 FOR LOCKING DEVICE. CAST IRON MANHOLE COVERS (LOCK TYPE) METROPOLITAN ST. LOUIS SEWER DISTRICT Standard Details of Sewer Construction Dr. WSH/SAM Ch. J.C.K. 2009 SHEET 54