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 with cross-bearers, fixed between the stiles, on which a plank or planks may be supported
1.3.13
trestle ladder scaffold
working platform and associated edge protection supported by trestle ladders as defined in this document (see Figure 1.2)
1.3.14
trestle scaffold
working platform and associated edge protection supported by trestles as defined in this document (see Figure 1.1)
1.3.15
working load limit
maximum load that may be placed on the working platform under general conditions of use
1.3.16
working platform
platform on a scaffold positioned at a work location for supporting personnel, equipment and materials and used to provide a working area.AS 1576.5 pdf download.