Scaffold is used in building construction,. The temporary platform is used to elevate and support workers and materials. This is during the construction, repair, or cleaning of a structure or machine.
So it consists of one or more planks of convenient size and length, with various methods of support, depending on the form and use.
In timber scaffolding, support for the planks is provided by a timber frame fabricated and erected at the site.
The frame may consist of vertical posts, horizontal longitudinal members, called ledgers and more. This could be transverse members supported by the ledgers, and longitudinal and transverse cross-bracing. The planks rest on the transverse members.
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