Aluminum Grating Clause Samples

Aluminum Grating. Grating shall be serrated and shall be made from aluminum meeting the requirements of ASTM B221, Alloy 6063, Temper T6. Grating shall be pressure locked close mesh rectangular design. Main bars shall be 1 3/4 inch X 3/16 inch spaced 7/16 inches center-to-center. Cross bars shall be of rectangular cross section, flush top and spaced 4 inches center-to-center. Main bars and cross bars to be slotted at their intersections so as not to remove excessive material from the load-sustaining members. Main bars shall be "dovetail" slotted and have their slots solidly filled by cross bars. Grating shall safely sustain a uniformly distributed load of 200 pounds per square foot on a 60-inch span and deflect less than 0.25 inches. Finish shall be mill finish. Grating shall be manufactured in accordance with NAAMM MBG 531.