3307.6.1 Sidewalk Shed Required

When a sidewalk shed is required for the construction or alteration of a structure, the work shall stop at a height of 40 feet (12 192 mm) unless, and until, the sidewalk shed has been completed. Such shed shall remain in place until the structure is enclosed, all exterior work completed and the sash is glazed above the second story, the exterior of the facade is cleaned down, and until completion of all outside handling of material, equipment and machinery, and all dismantling of material hoists, or climber or tower cranes including the use of a derrick in their removal, above the second story.