Safety requirements for scaffolding in Standards - 29 CFR 26
To be continued:
1910.28(q)
"Ladder-jack scaffolds."
1910.28(q)(1)
All ladder-jack scaffolds shall be limited to light duty and shall not exceed a height of 20 feet above the floor or ground.
1910.28(q)(2)
All ladders used in connection with ladder-jack scaffolds shall be heavy-duty ladders and shall be designed and constructed in accordance with 1910.25 and 1910.26.
1910.28(q)(3)
The ladder jack shall be so designed and constructed that it will bear on the side rails in addition to the ladder rungs, or if bearing on rungs only, the bearing area shall be at least 10 inches on each rung.
1910.28(q)(4)
Ladders used in conjunction with ladder jacks shall be so placed, fastened, held, or equipped with devices so as to prevent slipping.
1910.28(q)(5)
The wood platform planks shall be not less than 2 inches nominal in thickness. Both metal and wood platform planks shall overlap the bearing surface not less than 12 inches. The span between supports for wood shall not exceed 8 feet. Platform width shall be not less than 18 inches.
1910.28(q)(6)
Not more than two persons shall occupy any given 8 feet of any ladder-jack scaffold at any one time.
1910.28(r)
"Window-jack scaffolds."
1910.28(r)(1)
Window-jack scaffolds shall be used only for the purpose of working at the window opening through which the jack is placed.
1910.28(r)(2)
Window jacks shall not be used to support planks placed between one window jack and another or for other elements of scaffolding.
1910.28(r)(3)
Window-jack scaffolds shall be provided with suitable guardrails unless safety belts with lifelines are attached and provided for the workman. Window-jack scaffolds shall be used by one man only.
1910.28(s)
"Roofing brackets."
1910.28(s)(1)
Roofing brackets shall be constructed to fit the pitch of the roof.
1910.28(s)(2)
Brackets shall be secured in place by nailing in addition to the pointed metal projections. The nails shall be driven full length into the roof. When rope supports are used, they shall consist of first-grade manila of at least three-quarter-inch diameter, or equivalent.
1910.28(s)(3)
A substantial catch platform shall be installed below the working area of roofs more than 20 feet from the ground to eaves with a slope greater than 3 inches in 12 inches without a parapet. In width the platform shall extend 2 feet beyond the projection of the eaves and shall be provided with a safety rail, mid-rail, and toeboard. This provision shall not apply where employees engaged in work upon such roofs are protected by a safety belt attached to a lifeline.
1910.28(t)
"Crawling board or chicken ladders."
1910.28(t)(1)
Crawling boards shall be not less than 10 inches wide and 1 inch thick, having cleats 1 x 1 1/2 inches. The cleats shall be equal in length to the width of the board and spaced at equal intervals not to exceed 24 inches. Nails shall be driven through and clinched on the underside. The crawling board shall extend from the ridge pole to the eaves when used in connection with roof construction, repair, or maintenance.
1910.28(t)(2)
A firmly fastened lifeline of at least three-quarter-inch rope shall be strung beside each crawling board for a handhold.
1910.28(t)(3)
Crawling boards shall be secured to the roof by means of adequate ridge hooks or equivalent effective means.