Electrical, chemical or biological hazardsĮdge protection should be installed in accordance with the manufacturer’s instructions.Impalement hazards such as exposed reo, pipes, bars and similar.Weak, friable or non-trafficable surfaces.a fall from the platform would be reasonably likely to cause injury.Įxamples include erecting the scaffold adjacent to:.Edge protection is also required for platforms below 2m if the scaffold is erected next to a hazard that means: a risk assessment has determined a fall from the platform is not reasonably likely to cause injury.Įdge protection is required on trestle ladders scaffolds where the platform height exceeds 2m above the supporting surface.if such use is allowed by the manufacturer, and.If a trestle ladder scaffolding system is designed to incorporate edge protection it should only be omitted: AS 1892.1 Portable Ladders – Performance and geometric requirements.AS 1576.5 Scaffolding, Part 5: Prefabricated trestle and trestle ladder scaffolds.Trestle ladder scaffolding systems should comply with: Provided with edge protection where required.provided with a handover certificate if a person or object could fall more than 4m from the platform.erected by a person holding a minimum basic scaffolding (SB) high risk work licence if a person or object could fall more than 4m from the platform to any other level.limited to a single bay, unless a run of multiple bays is permitted by the manufacturer.fully planked (minimum 450mm wide), with gaps between decking components not exceeding 20mm, and any plank overhang in accordance with the manufacturer’s requirements Working platforms consisting of metal trestle (support frame with a tripod or inverted V form) and horizontal planks or metal decking.erected so working platforms are level and not more than 5m above the supporting surface.erected on a firm, even, stable supporting surface.erected in accordance with the manufacturer’s instructions, e.g.: ladders fully open, outriggers extended, edge protection fitted.Trestle scaffolds generally do not require a. Trestle scaffolds, for example ‘A-frame’ (see Figure 2) and ‘H-frame’ trestle scaffolds, are commonly used by bricklayers, plasterers and painters and for general fit-out and finishing work. Timber trestles remain common in some applications, most notably for bridge approaches crossing floodways, where earth fill would dangerously obstruct floodwater.Hazards when using trestle ladders scaffolds include: A trestle scaffold is a scaffold assembled from prefabricated trestles, braces and accessories. In the later 20th century, tools such as the earthmover made it cheaper to construct a high fill directly instead of first constructing a trestle from which to dump the fill. Once the railroad was running, it was used to transport the material to replace trestles with more permanent works, transporting and dumping fill around some trestles and transporting stone or steel to replace others with more permanent bridges. Timber trestles were used to get the railroad to its destination. Many timber trestles were built in the 19th and early 20th centuries with the expectation that they would be temporary. In the 21st century, steel and sometimes concrete trestles are commonly used to bridge particularly deep valleys while timber trestles remain common in certain areas. Timber and iron trestles were extensively used in the 19th century, the former making up from 1 to 3% of the total length of the average railroad. In the context of trestle bridges, each supporting frame is generally referred to as a bent. Freebase Rate this definition: 0.0 / 0 votesĪ trestle is a rigid frame used as a support, especially referring to a bridge composed of a number of short spans supported by such frames.
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