Bricklayers' square scaffolds shall not be used as heavy duty scaffolds.
TABLE XIV MINIMUM SPECIFICATIONS OF BRICKLAYERS' SQUARE SCAFFOLDS
Members | Dimensions |
Bearers or horizontal members ....... | 2" × 6" |
Legs ....... | 2" × 6" |
Braces at corners ....... | 1" × 6" |
Braces diagonally from center frames ....... | 1" × 6" |
The squares shall be set not more than five feet apart for medium duty scaffolds and not more than eight feet apart for light duty scaffolds. One inch by eight inch diagonal bracing extending from the bottom of one square to the top of the next adjacent square shall be provided on both the front and back of every bricklayers' square scaffold.
The platform planks used for such scaffolds shall be not less than two inches in thickness, full size. The ends of the planks shall overlap on the backs of the squares and each such plank shall be supported by not less than three squares. Such planks shall extend beyond the edges of the squares by not less than six inches nor more than 18 inches.
Bricklayers' square scaffolds shall not be constructed with more than three tiers. When erected in tiers, such scaffolds shall be so constructed that the squares are directly one above the other. The upper tiers shall stand on continuous rows of planks laid across the next lower tier and shall be nailed securely or otherwise secured so as to prevent displacement. Such scaffolds shall be erected on level and firm foundations equivalent to that afforded by two-inch by nine-inch planking.
N.Y. Comp. Codes R. & Regs. Tit. 12 §§ 23-5.14