Waterman Industries, Inc. Radial Gates

General Gates, hoists, and accessories shall be of the size, type, material, and construction specified herein. They shall be Waterman Industries, Inc. breastwall or overflow type radial gates or approved equal. All component parts shall be of the type of material shown in the Materials section of this specification. Size and Design Head The gates shall be designed to withstand the water depth specified as measured from the invert of the gate. Materials Radial gates and appurtenances shall conform to the requirements of the applicable specifications listed below for the alloy, grade, type, or class of material and the condition and finish appropriate to the structural and operational requirements: MATERIAL SPECIFICATION (ASTM) Cast Iron A 48, Class 30, or A 126, Class B Structural steel shapes, plates and bars A 36 Carbon steel bars A 108, or A 575 Stainless steel A 167, A 276, or A 582 Type 302, 303, 304, or 304L Bronze bars, rods, shapes B 21, or B 98 Permalube Bronze Steel assembly hardware A 307 Stainless steel assembly hardware ASTM F-193 and 194 Galvanizing A 123, or A 153 Gate Face Assembly The face assembly shall consist of horizontal structural members, vertical stiffeners and a curved face plate. Horizontal structural members shall be of adequate size and so located to transmit the thrust from the face of the gate to the radial arms. Design loads placed on the structural reinforcing channels shall not induce stresses in excess of those specified in Section 1.51.4 of AISC Specification for Structural Steel Builders. Minimum 1/4" thick, curved face plate shall be attached to the structurals by welding. Sufficient holes shall be located around the perimeter of the assembly for attaching the seals. Each gate shall be fitted with rubber seals, retained by steel bars, along the side and bottom edges of the gate face. The seals shall be of the belt type or "J" type, as specified, and shall be designed to bear on the walls and bottom of the structure or on rubbing plates and sills to insure a water-tight fit when the gate is closed. On breastwall gates, a rubber seal shall also be provided at the top edge of the gate. Radial Arms The radial arm assemblies shall consist of structural members welded to a pin plate and drilled to match gusset plates welded to the horizontal structural members of the face assembly. The slenderness ratio of the radial arms shall not exceed 150. Bolts for field assembly shall be provided. A steel pin plate shall transmit the load from the radial arms to the pivot pin collar which shall be welded to the pin plate to distribute the bearing load on the pin. The collar shall be match drilled with the pivot pin Side Seal Rubbing Plates (if used) Galvanized (stainless) steel seal rubbing plate shall …