A ductile iron catch basin frame is designed for traffic-rated applications with a total approximate weight of 124 pounds. The top view indicates an overall frame dimension of 2 feet 0 1/4 inches by 2 feet 5 1/4 inches, featuring eight 3/4-inch by 2 1/4-inch by 1/16-inch level pads and two 5/8-inch-11 UNC-2B tapped holes per place. Section A-A details a frame height of 4 1/2 inches with clear internal opening dimensions of 1 foot 8 inches by 1 foot 6 1/2 inches. Notes specify the material to be ductile iron ASTM A 536 Grade 80-55-06 H-20 rated, with Olympic Foundry part number SM 60 D/T noted as a pre-approved equal. The top of the frame must be adjusted even with the surrounding roadway section.
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