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3 . Wheels: Two (2) wheels with self-lubricating bearings with a <br /> minimum load rating of 120 lbs. per wheel. Wheels shall be <br /> attached to the axle via a tamper resistant snap-on method <br /> which contains no metal components. No cotter pins, "Pal <br /> nuts" or similar restraining devices shall be utilized to <br /> attach the wheel. All wheels shall be 1. 75 inches wide. <br /> Wheels shall be easily removed for replacement with a non- <br /> commercially available tool. <br /> Wheel Sizes: Size A: 8 inches <br /> Size B: 10 inches <br /> Size C: 12 inches <br /> 4 . Axles: Axles shall be solid steel and electro-plated with <br /> black zinc for durability and long life. Carts should be <br /> designed in such a way as to prevent the axle from popping <br /> out. An axle, which is only press fitted and not secured in <br /> some additional manner will not be acceptable. <br /> Axle Sizes: Size A: 5/8 inch <br /> Size B: 6/8 inch <br /> Size C: 7/8 inch <br /> 5 . Lids: Lids shall be molded of the same material as the cart <br /> body and shall be permanently attached to the cart body with <br /> plastic hinge(s) . Metal fasteners are not acceptable. Lids <br /> shall be watertight and slightly domed to facilitate run-off <br /> of rainwater. The lid shall be designed to fold over parallel <br /> to the back side of the cart when fully opened. Lids shall be <br /> factory assembled. <br /> 6. Locking Bar: The semi-automated lifting area shall be <br /> integrally molded with the body of the cart. The locking bar <br /> shall be able to rotate a full three-hundred sixty (360) <br /> degrees and shall be constructed of zinc-coated steel to <br /> prevent rust and corrosion. Plastic locking bars are <br /> unacceptable. <br /> 7 . Certification by a certified independent laboratory shall be <br /> required of the following minimum standards and quality <br /> assurance measurements: <br /> 7 . 1 Drop Impact Test - material and weight shall0 be cold <br /> soaked at a temperature of not less than -20 F for 24 <br /> hours and dropped within 60 seconds of leaving the cold <br /> chamber. Carts shall remain watertight after a minimum <br /> drop height of 15 feet. Test loads are as follows: <br /> Size A: 120 lbs. distributed <br /> Size B: 160 lbs. distributed <br /> Size C: 180 lbs. distributed <br />