California Code of Regulations
Title 8 - Industrial Relations
Division 1 - Department of Industrial Relations
Chapter 4 - Division of Industrial Safety
Subchapter 18 - Ship Building, Ship Repairing and Ship Breaking Safety Orders
Article 5 - Scaffold Construction
Section 8365 - Exterior Suspended Staging Other than Painters' Staging

(a) Staging shall be suspended by means of wire rope or steel suspenders, or stock of equivalent strength, excluding structural reinforcing steel. The platforms shall be provided with standard guardrails on all exposed sides and ends. Guardrails shall be 2- x 4-inch lumber or equivalent.

NOTE: Three-eighths-inch wire rope, if kept taut t all times is considered equivalent; fiber line is not.

(b) All bails, stirrups, and slings shall be made of standard three-eighths-inch galvanized wire rope or of not less than three-fourths-inch galvanized solid round or three-fourths-inch galvanized square steel bars, or of materials of equivalent strength and weather resistance.

(c) Spalls or bolsters shall be on 8-foot centers and of not less than 4-inch by 6-inch lumber, or stock of equivalent strength, and shall extend not less than 10 inches beyond each edge of the platform. Stage planks shall be a minimum of 2- x 10-inch lumber.

(d) A galvanized iron or steel bolt 6 inches long and three-eighths inch diameter shall be fastened through the spall or bolster at right angles to it, not less than 3 inches from the end, and halfway between the upper and lower sides to prevent bails or slings, when used, from accidentally slipping off the end of the spall.

(e) Wire ropes shall be protected against burning or a welding arc to a height of 8 feet above the platform with a rubber hose or equivalent protection.