![]() NOTE: Authority cited: Section 142.3, Labor Code. ![]() (3) When moving platforms to the next level, the old platform shall be left undisturbed until the new ledgers have been set in place ready to receive the platform planks. (2) Platforms shall extend within 14 inches of the finished face of the building, except those used primarily by bricklayers and stonemasons shall extend to within 7 inches of the finish face of the building on which the work is being performed. The working platform shall cover the entire space between scaffold uprights except for the open area under the backrailing, which shall not be more than 8 inches. A plank shall not overlap an unsupported end of another plank. If the planks are not nailed, they shall be of such length that they overlap the ledgers at each end by at least 6 inches. Platform planks that are butt-ended (not overlapped) must be nailed to ledgers consisting of 2-inch by 6-inch or heavier material. (1) The platform shall be not more than 4 feet wide, constructed of planks at least 2 inches thick and 10 inches wide, laid closely together. The diagonal bracing shall extend in both directions across the entire outside vertical face. (2) The entire scaffold shall be rigidly braced with 1-inch by 6-inch boards, and every part thereof so secured as to prevent swaying, tipping, or collapsing. Ties shall connect to the inside uprights, and they shall be not more than 15 feet apart vertically or horizontally. 10 iron wire or equivalent or stronger material used in combination with spacer blocks between inside uprights and the structure. (1) The scaffold shall be rigidly tied to the building or structure by means of a double looped No. Open sides and ends of working levels 7 1/2 feet or more above grade shall be provided with top rails and midrails as specified in subsection 1640(b)(4).ĮXCEPTION: That side of bricklayers' and masons' scaffolds adjacent to the work under construction provided that the wall is higher than the adjacent work platform. ![]() Ribbons shall be long enough to extend from upright to upright without splices. Vertical spacing of ribbons and ledgers shall not exceed 7 feet. (2) Ribbons shall be 1-inch by 6-inch or heavier material securely fastened to both inside and outside uprights directly under and in contact with the ledgers. For ledgers spanning not more than 4 feet between uprights, use either 1 piece of 2-inch by 6-inch lumber securely fastened at each point of support or 2 pieces of 1-inch by 6-inch board, 1 being on each side of the uprights and fastened securely at each point of support. (1) The platform shall be supported by ledgers and ribbons, nailed or bolted to the uprights. Note: A 1 1/8-inch by 10-inch by 10-inch piece of exterior grade plywood may be used in lieu of the wooden base mentioned above. When the scaffold is resting on earth or other such material, the uprights shall rest on and be secured to the equivalent of a 2-inch by 10-inch by 10-inch wooden base. If the uprights rest on a surface that might cause slipping, a continuous sill or other means shall be provided to hold the uprights in place. Uprights laminated from 2-inch by 4-inch material are acceptable if the joints of each lamination are staggered, and either reinforced by scabs or so arranged that they occur at or near ribbon attachment points. The splices of 4-inch by 4-inch uprights shall be made with square butt joints, and scabs of 2-inch by 4-inch material at least 48 inches long shall be nailed in place on 2 sides with 6 nails in each 1/2 of each scab. ![]() ![]() For heights not to exceed 20 feet, the uprights shall be of 4-inch by 4-inch lumber or heavier material, with a space of 4 feet between uprights at right angle to the wall and not more than 7 feet, center to center, parallel to the wall. (b) When buggies are used on scaffolds to transport concrete, a strong scaffold shall be designed that is capable of supporting a concentrated load equal to the weight of a loaded buggy at any point on girders, beams, or planking. (a) Pole scaffolds to be used by bricklayers, stonemasons, concrete workers, or other trades using heavy tools or storing heavy material on the scaffold shall be constructed as follows: ![]()
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