(ii) When the upper part of the wall is to be carried out. Cantilever or needleĬantilever or needle is used under the following circumstances: Such scaffolding is also called ‘independent scaffolding. Rakers and cross braces are connected with this to make more strong and stable. Putlogs are then supported on both the frames. The first row and second row are placed at 20 to 30 cm and 1.2 to 1.5 m away from the wall respectively. In that case, two rows of scaffolding are used more strongly.Įach row thus forms a separate vertical framework. In stone masonry, it is very difficult to provide holes m the wall to support putlogs. This type of scaffoldings is called putlog scaffolding and is commonly used for bricklaying. Guards, boarding and other members are placed as shown in Fig.1. This is a transverse member,Īt an interval of 1.2 to 1.5 m. Putlogs are placed one end on ledgers and another end right angles on the wall. ![]() At a vertical interval of 1.2 to 1.5 interval ledgers are connected to standards. The standards are placed at 2 to 3 m intervals. This consists of a single framework of standards, ledgers, putlogs etc., constructed parallel to the wall at a distance of about 1.20 meters. Single scaffolding (Brick-layer’s scaffolding) Double scaffolding or masons scaffolding.ġ.Single scaffolding or brick-layers scaffolding.In the construction Process following types of Scaffolding are used: Toeboard: These are boards, placed parallel to ledgers, and supported on putlogs, to give protection at the level of the working platform.Guard rail: This is a rail, provided like a ledger, at the working level.Boarding: Boarding is a horizontal platform supported on putlogs and is used for the support of workmen and materials at the time working.Bridle: This is a member used to bridge a wall opening supports one end of the putlog at the opening.Transoms: Transoms are a type of putlogs supported on ledgers on both sides.Putlogs: Putlogs are placed one end on ledgers and other ends right angles on the wall.Braces: Braces are diagonally fixed on standards.Ledgers: The horizontal supporting members running parallel to the wall.Standards: These are the vertical members of the framework, supported on the ground or drums, or embedded into the ground.Scaffolding has the following components: as shown in Fig. ![]() During construction, as the work progress on upwards, the height of the scaffolding is also increased. The scaffolding should be made by sufficient strong and stable materials so that it can easily support and carry workman and construction materials placed on it. Scaffolding is generally needed when the height of the structural member (wall, column, etc.) is greater than 1.5m. Scaffolding is needed for new construction, repairs of structure,s or even demolition of a building. Scaffolding is a temporary structure in the form of a timber or steel framework over which the workmen can sit and carry on the construction work.
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