To ensure public safety, the NYC Building Code requires all structurally supported sidewalks and vault covers to meet a minimum live load rating of 600 pounds per square foot. This stringent standard is designed to withstand not only dense pedestrian crowds but also heavy emergency vehicles that may accidentally mount the curb. Licensed engineers must calculate and certify these ratings before any sidewalk construction or vault alteration permits are approved by the Department of Buildings. Failure to maintain this load capacity can result in catastrophic structural failure, especially if heavy construction equipment or delivery vehicles park over the hollow space.
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