3303.5.5.2 Chute construction.
BC § 3303.5.5.2
Chute construction shall comply with the following requirements: 1. Every chute used to convey debris from a building or structure shall be rigidly supported and braced throughout its height.
2.Non-manufactured chutes less than 24 inches (610 mm) in maximum dimension shall be constructed of not less than 1-inch (25.4 mm) (nominal) wood, or 1/8-inch thick (3.18 mm) steel, or a material of equivalent strength and durability acceptable to the commissioner. Chutes more than 24 inches (610 mm) in maximum dimensions shall be constructed of not less than 2-inch (51 mm) (nominal) wood, or 3/16-inch thick (4.76 mm) steel, or a material of equivalent strength and durability acceptable to the commissioner.
3.Chutes shall be provided with a metal impact plate where material is forced to change direction while falling.
4.A gate shall be provided at the lower end of every chute to control the loading of material into trucks and to close the chute at all other times. Splash-boards or baffles shall be erected to prevent materials from rebounding into the street or under the sidewalk shed.
5.A bumper or curb at least 4 inches by 4 inches (102 by 102 mm) in section shall be provided at each chute opening where such opening is level with, or below, the floor or platform. Every space between the chute and the edge of the opening in the floor or platform shall be solidly planked.
6.Chutes that are over 75 feet (22 860 mm) in height, or utilized in Group I occupancy, shall also comply with the requirements of Section 3303.5.5.3.
