2564 ABT Domestic DI HeelProof 1 piece Frame/Grate Combo, 1/2 Meter

Frame & Grate: #2564AF:  Uncoated ductile iron conforming to ASTM A-536 with a minimum of 0.105Ft² /L Ft (.032m²/Lm) open area and shall have omni directional openings and conform to the requirements of the Americans with Disabilities Act Handbook, Section 4.5.4 and be heel proof. Grates shall meet a minimum 620 psi proof load per AASHTO M-306 test modified by utilizing a 9” x 3” load plate. Grates shall meet a minimum 620 psi proof load per AASHTO M-306 test modified by utilizing a 9” x 3” load plate. The frames shall have .25” dia. x 4” long (minimum) anchors at all corners of each frame.  Frames shall be independent of the channels. The grate retaining device shall withstand, without maintenance, repetitive cyclic vertical loads of 500 lbs. The retainers shall also withstand a pullout resistance of 250 lb. per foot after completing a 1,000 hours ASTM B117 salt spray test. The grate retaining devices shall not obstruct hydraulic flow in the channel. All grates shall be bicycle safe. Frames and grates shall be made in U.S.A., and shall conform to the FHWA's "Buy America" policy 23 CFR 635.410(b) and Federal Acquisitions Regulations (FAR) 52.225 “Buy American Act”.