Safety requirements for scaffolding in Standards - 29 CFR 22
To be continued:
1910.28(h)
"Stone setters' adjustable multiple-point suspension scaffolds."
1910.28(h)(1)
The scaffold shall be capable of sustaining a working load of 25 pounds per square foot and shall not be overloaded. Scaffolds shall not be used for storage of stone or other heavy materials.
1910.28(h)(2)
The hoisting machine and its supports shall be of a type tested and listed by a nationally recognized testing laboratory. Refer to 1910.399(a)(77) for definition of listed, and 1910.7 for nationally recognized testing laboratory.
1910.28(h)(3)
The platform shall be securely fastened to the hangers by U-bolts or other equivalent means.
1910.28(h)(4)
The scaffold unit shall be suspended from metal outriggers, iron brackets, wire rope slings, or iron hooks which will safely support the maximum intended load.
1910.28(h)(5)
Outriggers when used shall be set with their webs in a vertical position, securely anchored to the building or structure and provided with stop bolts at each end.
1910.28(h)(6)
The scaffold shall be supported by wire rope conforming with paragraph (a)(22) of this section, suspended from overhead supports.
1910.28(h)(7)
The free ends of the suspension wire ropes shall be equipped with proper size thimbles, secured by splicing or other equivalent means. The running ends shall be securely attached to the hoisting drum and at least four turns of rope shall remain on the drum at all times.
1910.28(h)(8)
Guardrails not less than 2 by 4 inches or the equivalent and not less than 36 inches or more than 42 inches high, with a mid-rail, when required, of 1- by 4-inch lumber or equivalent, and toeboards, shall be installed at all open sides on all scaffolds more than 10 feet above the ground or floor. Toeboards shall be a minimum of 4 inches in height. Wire mesh shall be installed in accordance with paragraph (a)(17) of this section.
1910.28(h)(9)
When two or more scaffolds are used on a building or structure they shall not be bridged one to the other but shall be maintained at even height with platforms butting closely.
1910.28(h)(10)
Each scaffold shall be installed or relocated in accordance with designs and instructions of a registered professional engineer, and such installation or relocation shall be supervised by a competent designated person.
1910.28(i)
"Single-point adjustable suspension scaffolds."
1910.28(i)(1)
The scaffolding, including power units or manually operated winches, shall be a type tested and listed by a nationally recognized testing laboratory. Refer to 1910.399(a)(77) for definition of listed, and 1910.7 for nationally recognized testing laboratory.
1910.28(i)(2)
[Reserved]
1910.28(i)(3)
All power-operated gears and brakes shall be enclosed.
1910.28(i)(4)
In addition to the normal operating brake, all-power driven units must have an emergency brake which engages automatically when the normal speed of descent is exceeded.
1910.28(i)(5)
Guards, mid-rails, and toeboards shall completely enclose the cage or basket. Guardrails shall be no less than 2 by 4 inches or the equivalent installed no less than 36 inches nor more than 42 inches above the platform. Mid-rails shall be 1 by 6 inches or the equivalent; installed equidistant between the guardrail and the platform. Toeboards shall be a minimum of 4 inches in height.
1910.28(i)(6)
The hoisting machines, cables, and equipment shall be regularly serviced and inspected after each installation and every 30 days thereafter.
1910.28(i)(7)
The units may be combined to form a two-point suspension scaffold. Such scaffold shall comply with paragraph ( g) of this section.
1910.28(i)(8)
The supporting. cable shall be straight for its entire length, and the operator shall not sway the basket and fix the cable to any intermediate points to change his original path of travel.
1910.28(i)(9)
Equipment shall be maintained and used in accordance with the manufacturers' instructions.
1910.28(i)(10)
Suspension methods shall conform to applicable provisions of paragraphs (f) and (g) of this section.