RW - Aluminum Stop Gates

 GENERAL

1. The hand-pull stop gates for this project shall be provided as specified and as shown in the Contract Documents.     

SUBMITTALS

1. Submittals shall include, at a minimum, detailed custom drawings of the gate assembly with dimensional and mounting information and a listing of the materials of construction. General arrangement drawings and cut sheets are not considered acceptable drawings.

QUALITY ASSURANCE

1. The basis for the design of the stop gates is the Model RW4000-A as manufactured by RW Gate Company, Troy, NY.
2. All gates shall be shop inspected for proper operation prior to shipment.
3. Welds shall be performed by welders with ASME Section IX or AWS D1.2 certification.
4. The gate manufacturer shall be ISO 9001:2015 certified.  

MATERIALS OF CONSTRUCTION

1. All aluminum referenced in this specification shall be alloy 6061-T6, ASTM B308/308M.
2. All stainless steel referenced in this specification shall be Type 304 or Type 304L, ASTM A240 or ASTM A276 unless otherwise indicated herein.  
1. All non-welded stainless steel components, excluding anchor bolts and assembly bolts, shall be Type 304 stainless steel.
2. Anchor bolts and assembly bolts shall be Type 316 stainless steel.  

SLIDE

1. The slide shall consist of an aluminum plate that is reinforced with stiffeners to withstand the specified head conditions. The slide shall engage the frame a minimum of 1-inch on each side.
2. The slide plate and stiffeners shall have a minimum material thickness of 1/4-inch.
1. The slide shall be reinforced with plates or channel shaped members to restrict deflection to 1/16-inch or less at the design head.
2. The stiffeners shall be welded to the slide.
3. Dual lifting handles shall be provided on slides with opening widths in excess of24 inches.