This information is provided free of charge by the Department of Industrial Relations from its web site at These regulations are for the convenience of the user and no representation or warranty is made that the information is current or accurate. See full disclaimer at

Subchapter 4. Construction Safety Orders
Article 22. Scaffolds--Various Types

Return to index
New query

§1653. Bricklayers' Square Scaffolds.

(a) The squares shall not exceed 5 feet in width and 5 feet in height.

(b) Members shall be not less than those specified in the Schedule below: (See Plate B-32, Appendix)

                 Minimum Dimensions for  
          Bricklayers' Square Scaffold Members 
 Members                                         Dimensions 
Ledgers or horizontal members..................... 2 x 6 in. 
Legs.............................................. 2 x 6 in. 
Braces at corners................................. 1 x 6 in. 
Braces diagonally from center frame............... 1 x 8 in. 

(c) The squares shall be reinforced on both sides of each corner with 1- x 6-inch gusset pieces. They shall also have diagonal braces 1 x 8 inches on both sides running from center to center of each member, or other means to secure equivalent strength and rigidity.

(d) The squares shall be set not more than 5 feet apart for medium duty scaffolds, and not more than 8 feet apart for light duty scaffolds. Bracing, 1 x 8 inches, extending from the bottom of each square to the top of the next square, shall be provided on both front and rear sides of the scaffold.

(e) Platform planks shall be at least 2- x 10-inch nominal size. The ends of the planks shall overlap the ledgers of the squares and each plank shall be supported by not less than three squares.

(f) Bricklayers' square scaffolds shall not exceed three tiers in height and shall be so constructed and arranged that one square shall rest directly above the other. The upper tiers shall stand on a continuous row of planks laid across the next lower tier and be nailed down or otherwise secured to prevent displacement.

(g) Scaffolds shall be level and set upon a firm foundation.

(h) For guardrailing requirements see Section 1621.

NOTE: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.


1. New section filed 11-14-75; effective thirtieth day thereafter (Register 75, No. 46).

2. Amendment of subsection (b) and new subsection (h) filed 7-24-87; operative 8-23-87 (Register 87, No. 33).

Go BackGo Back to Article 22 Table of Contents