装卸区混凝土计算器 — 需要多少混凝土？

装卸区混凝土指南

Loading docks require heavy-duty 6–8 inch slabs at 4,000–5,000 PSI with #4 rebar at 18-inch centers in both directions. Traffic-rated aggregate and fiber reinforcement improve durability. A 20×40 ft loading apron at 8 inches needs about 19.8 cubic yards.