AS 1576.5:2021 Scaffolding Part 5: Prefabricated trestle and trestle ladder scaffolds

AS 1576.5:2021 Scaffolding Part 5: Prefabricated trestle and trestle ladder scaffolds. AS 1576.5 specifies requirements for scaffolds that are assembled from prefabricated trestles or trestle ladders. NOTE Design and testing of trestle ladders is covered by AS 1892.1 and such requirements are outside the scope of this Standard. 1.2 Normative references The following documents are referred to in the text in such a way that some or all of their content constitutes a requirement of this this document: AS/NZS 1576.1, Scaffolding, Part 1: General requirements AS/NZS 1576.2, Scaffolding, Part 2: Couplers and accessories AS/NZS 1577, Scaffold decking components AS 1892.1, Portable ladders, Part 1: Performance and geometric requirements 1.3 Definitions For the purpose of this Standard the definitions given in AS/NZS 1576.1 and those below apply. 1.3.1 bottom rail lowest rail in guardrailing 1.3.2 clamping device device which interconnects scaffold planks at intervals along their length to limit differential deflection between adjacent scaffold planks 1.3.3 counterweight weight or series of weights used to counterbalance the forces on the trestle ladder scaffold against overturning 1.3.4 frame trestle self-supporting stand other than a trestle ladder incorporating one or more beams and designed to support a working platform Note 1 to entry: Frame trestles provide a platform height that may be fixed or varied. Note 2 to entry: Base arrangements for frame trestles may be of a fixed configuration, or may be folded or swivelled to aid storage, handling and transit. Note 3 to entry: For a typical frame trestle, see Figure 1.1(a). 1.3.5 platform surface on a scaffold to support persons, materials, or both, which may comprise individual planks or multiple interconnected planks 1.3.6 putlog horizontal structural member which supports the working platform and spans between the supporting standard or post and the adjacent wall 1.3.7 putlog trestle non-self-supporting stand incorporating an integral putlog, one end of which is intended to be supported by a wall Note 1 to entry: Putlog trestles provide a platform height that may be fixed or varied. Note 2 to entry: Fora typical putlog, see Figure 1.1(b). 1.3.8 scaffold temporary structure erected to support access platforms or working platforms 1.3.9 shall indicates that a statement is mandatory 1.3.10 should indicates a recommendation 1.3.11 trestle frame trestle or putlog trestle 1.3.12 trestle ladder self-supporting portable ladder of fixed length, consisting of two sections hinged at the top to form equal angles with the base, each section being provided...