SCAFFOLDING OVERVIEW Scaffolding basics …（脚手架脚手架基础概述u2026）.pdfVIP

SCAFFOLDING OVERVIEW Scaffolding basics terminology Scaffolding –Australian Standards 1576 This Australian Standard specifies performance requirements and methods of structural and general design for access and working scaffolds. In general these requirements also apply to other types of working scaffolds. The purpose of a working scaffold is to provide a safe place of work with safe access suitable for the work being done. The Australian Standard sets out performance requirements for working scaffolds. The standard is intended to be used as the basis for enquiry and design. Materials The basic materials for scaffold are Standards (uprights), ledgers (horizontal), tubes, couplers and boards. Materials are either steel or aluminium. If they are steel they are either black or galvanised. The scaffold components come in a variety of lengths and are a standard diameter of 48.3 mm. The chief difference between the steel and aluminium is the lower weight of aluminium tubes (1.7 kg/m as opposed to 4.4 kg/m) and also a greater flexibility and so less resistance to force. Tubes are generally bought in 6.5 m lengths and can then be cut down to certain typical sizes. Boards provide a working surface for users of the scaffold. Traditionally they are seasoned wood and come in three thicknesses (38 mm (usual), 50 mm and 63 mm) are a standard width (225 mm). The timber board ends are protected by metal plates called hoop irons or sometimes nail plates. Timber Scaffold boards in Australia should comply with the requirements of AS 1576. As well as timber, steel or aluminium decking is used. In recent years there has been a trend away from timber to steel or aluminium on account of timber boards rotting from the inside and is undetectable. Australian Scaffold does not use timber boards. As well as boards for the working platform there are sole boards whi