3306.10 Chutes.

3306.10 Chutes. Chutes for the removal of materials and debris shall be provided in all parts of demolition operations that are more than 20 feet (6.096 m) above the point where the removal of material is effected. Such chutes shall be completely enclosed. They shall not extend in an unbroken line for more than 25 feet (7.62 m) vertically but shall be equipped at intervals of 25 feet (7.62 m) or less with substantial stops or offsets to prevent descending material from attaining dangerous speeds.

The bottom of each chute shall be equipped with a gate or stop with a suitable means for closing or regulating the flow of material.

Chutes, floors, stairways and other places affected shall be watered sufficiently to keep down the dust.