WALL THIMBLES

THIMBLESPECIFICATIONSWall thimbles shall be heavy, one piece castings. Thefront flange shall be machined to a plane and shall bedrilled and holes tapped to mate the drilling pattern ofthe gate frame. Holes shall be plugged as to preventconcrete from intruding into threaded area. The verticalcenterline shall be clearly shown by permanent marksat the top and bottom of the machined face. The word"top" shall be marked permanently near the top centerlineof the thimble opening. The surfaces to be castinto the concrete shall be free of paint, oil, and grease.Corrosion-resistant studs and nuts shall be providedfor attaching the gate. Mastic is recommended to forma seal between the front face of the thimble and theback of the gate frame.ANCHOR BOLTS& DRILL-INANCHORSFLANGEBACK SLUICE GATE ON "J" ANCHORSFLANGEBACK SLUICE GATE ON EXPANSION ANCHORSAnchor bolts are commonly used to mount sluicegates and other control gates to a headwall in theabsence of thimbles. Waterman can supply anchorbolts of all materials, including galvanized steel andsilicon bronze. Stainless steel is the most commonlypreferred material, and is available either plain or epoxycoated. The accepted practice for mounting gates onanchor bolts is to utilize double nuts, one for positioningthe gate, and the other for securing the gate.Note: In those locations where extended flangeback gatesare used on headwalls without sufficient side or bottomclearance for nut adjustments, anchor bolts can be broughtthrough the gate frame to the front face. Special anchorsand frame drilling must be ordered.EXTENDED FLANGEBACK SLUICE GATE WITH "J"ANCHORS PROJECTING THRU BACK FLANGEExpansion (tap-in) or chemical bonding anchors orstuds are also commonly used to attach gates toheadwalls. While the least preferred of the threemethods, it is sometimes necessary to use this typeof anchor, as in a retrofit situation to an existingstructure. Waterman can supply most major brands ofexpansion anchors.EXTENDED FLANGEBACK SLUICE GATE WITH "J"ANCHORS THRU BOTH FLANGES4