A scaffold as claimed in claim 7 wherein said scaffold supports include orifices in the ends of the said horizontal members, removable rod safety rail supports mounted in said orifices and a safety rail supported by said safety rail supports of adjacent scaffold supports.ĩ.
A scaffold supported from the roof of a building having a wall and a roof supported thereon, said scaffold comprising a plurality of adjacent scaffold supports as claimed in claim 1 and a plurality of planks laid on and between the horizontal members of the said adjacent supports.Ĩ. A scaffold support as claimed in claim 1 wherein said horizontal member has a protuberance on its upper surface spaced from the point of connection of said vertical member to said horizontal member a distance sufficient to permit a plank to be laid on said horizontal member between said point and said protuberance.ħ. A scaffold support as claimed in claim 1 wherein said vertical member is of adjustable length.Ħ. A scaffold support as claimed in claim 3 including a stop on the outer surface of said angle member positioned to retain said plank in said cleat.ĥ. A scaffold support as claimed in claim 1 including a cleat on the outer surface of said angle member shaped to receive and retain a plank.Ĥ. A scaffold support as claimed in claim 1 wherein said horizontal member includes a cylindrical orifice at its end remote from the end connected to the vertical member and a removable rod safety rail support mounted in said orifice.ģ. A scaffold support comprising a roof cleat and a bracket supported therefrom said roof cleat comprising a flat apertured metal fastening plate connected by a hinge to a hooked end plate said bracket comprising a vertical member having an upper end and a lower end when arranged in its operative position, said upper end joined to a downwardly projecting angle member which terminates in a pin mounted transverse to the longitudinal axis of said angle member, said lower end of said vertical member being joined to a horizontal member in the same plane as said angle member but at 180° thereto, an extension leg slidably mounted with respect to said horizontal member parallel thereto and projecting in the same direction as said angle member, means to adjustably longitudinally locate said leg with respect to said horizontal member means to fasten said roof cleat to the edge of the roof of a building having a wall and roof supported thereon with said hinge on the edge of said roof and the hooked end plate hanging down vertically, whereby when said pin is hooked in the hooked end plate and said leg is adjusted to its proper length and bearing against the wall of said building, the vertical member of said bracket is maintained in its vertical position.Ģ. Scaffold erectors and dismantlers should all receive the general overview, and, in addition, specific training for the type of supported scaffold being erected or dismantled.1. The Agency believes that employees erecting or dismantling scaffolds should be trained in the following topics: This appendix D is provided to serve as a guide to assist employers when evaluating the training needs of employees erecting or dismantling supported scaffolds. (Non-mandatory) Appendix D to Subpart L of Part 1926-List of Training Topics for Scaffold Erectors and Dismantlers Maximum vertical spacing of horizontal members Scaffold components which are not selected and loaded in accordance with this Appendix, and components for which no specific guidelines or tables are given in this appendix (e.g., joints, ties, components for wood pole scaffolds more than 60 feet in height, components for heavy-duty horse scaffolds, components made with other materials, and components with other dimensions, etc.) must be designed and constructed in accordance with the capacity requirements of § 1926.451(a), and loaded in accordance with § 1926.451(d)(1). However, the guidelines do not provide all the information necessary to build a complete system, and the employer is still responsible for designing and assembling these components in such a way that the completed system will meet the requirements of § 1926.451(a). An employer may use these guidelines and tables as a starting point for designing scaffold systems. This appendix provides non-mandatory guidelines to assist employers in complying with the requirements of subpart L of this part. (Non-mandatory) Appendix A to Subpart L of Part 1926-Scaffold Specifications
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