2.1 General Design A. Gate shall be non-self-contained of the rising stem configuration. B. All structural components of frame and slide shall be fabricated of stainless steel having a minimum thickness of ¼ inch and shall have adequate strength to prevent distortion during normal handling, installation and while in service. C. The gate shall utilize self-adjusting seals. Due to difficulty of accessing gate when they are in service, gate that utilize adjustable wedges, wedging devices or pressure pads are not acceptable. D. Sluice gate frame shall be shipped fully assembled. 2.2 Frame A. The gate frame assembly, including the guide members, invert member and yoke members shall be stainless steel with a minimum thickness of ¼-inch. a. The frame configuration shall be of the flush-bottom type and shall allow the replacement of the top and side seals without removing the gate frame from the wall or wall thimble. b. Frame design shall allow for mounting directly to a wall with stainless steel anchor bolts and grout or mounting a wall thimble with stainless steel mounting studs and a mastic gasket material. c. All wall mounted or thimble mounted gates shall have a flange frame. Flat frame gates are not acceptable. d. The structural portion of the frame that incorporates the seat/seals shall be formed into one piece shape for rigidity. Guide member designs where water loads are transferred through the assembly bolts are not acceptable. e. The frame shall extend to accommodate the entire height of the slide when the slide is in the fully opened position on upward opening gates. f. A ridged stainless steel top seal member shall be provided across the top of the opening on gates designed to cover submerged openings. 2.3 Slide A. The slide shall consist of stainless-steel plate reinforced to limit its deflection to the lesser of L/360 of the span or 1/16-in under the maximum design head condition. a. All structural components shall have a minimum thickness of ¼ inch. b. Reinforcing stiffeners shall be welded to the slide and mounted horizontally. Vertical stiffeners shall be welded on the outside of the horizontal stiffeners for additional reinforcement.
