SUPPORTED

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Supported scaffolds are platforms supported by legs, outrigger beams, brackets, poles, uprights, posts, frames, or similar rigid support. The structural members, poles, legs, posts, frames, and uprights, shall be plumb and braced to prevent swaying and displacement. 1926.451(b) and (c)(3)

Supported scaffolds poles, legs, posts, frames, and uprights shall bear on base plates and mud sills, or on another adequate firm foundation. 1926.451(c)(2)

Either the manufacturer’s recommendation or the following placements shall be used for guys, ties, and braces: install guys, ties, and braces at the closest horizontal member to the 4:1 height and repeat vertically with the top restraint no further than the 4:1 height from the top:

Vertically – Every 20 feet (6.1 meters) or less for scaffolds less than 3 feet (0.9 meters) wide; Every 26 feet (7.9 meters) or less for scaffolds more than 3 feet (0.9 meters) wide; Horizontally – A each end; At intervals not to exceed 30 feet (9.1 meters) from one end. 1926.451(c)(1)(ii)