Architectural · A-P3ASN

Davit Rigging Example: Building Clearance Dimensions and Loading

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A portable roof davit system operating at a building parapet features clearance dimensions and loading requirements. The setup includes a portable davit arm with an eight-foot six-inch maximum boom reach, mounted on a pedestal with an approximate dead load of six hundred fifty pounds and a working load capacity of twelve hundred fifty pounds with a four-to-one safety factor. Key clearances include a forty-two-inch minimum to six-foot maximum parapet height, an eighteen-inch maximum parapet width, a nine-foot clearance from the top of the parapet to overhead obstructions, and a five-foot minimum platform clearance beyond any facade feature. The exterior building maintenance equipment operates on an equipment traffic pad, pavers, or concrete slab, maintaining a seven-foot typical distance from the pedestal center to the walkway edge.

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