When the height above floor level exceeds above 1.50 m, temporary structure, usually of Timber or steel, is erected close to work to provider safe working platform for the workers, on which work men can sit and carry the construction.The temporary frame work is known as scaffolding or simply a scaffod.
Single scaffolding:-
1)Single scaffolding is usually used for brick masonry and so it is also known as brick layer's scaffolding. 2)Single scaffolding comprises of standards, putlogs, ledgers etc.which corresponds to the wall at a distance of around 1.2 m. Putlogs are positioned at a gap of 1.2 to 1.5 m.
Double scaffolding:-
1)Stronger than single scaffolding. used in the construction of stone work framework is similar to single scaffolding except two rows and stand are provided.
2)The distance between the face of the wall and the first row of a standard is about 200mm to 300mm.
3)Distance between the two rows are 1m.
cantilever scaffolding:-
1)Generally formwork may be the single scaffolding type or double scaffolding type.
2)The standard are supported by the series of a needles or ties which are taken out at floor levels or through opening or through holes kept in the masonry.
Suspended scaffolding:-
1) A very light type of scaffolding and can be used only for a maintenance work
2) The working platform is suspended from the roof by means of ropes,wires or chains and arrangements are made such that the platform can be raised or lowered.
3) Do not create any obstruction on the ground.
Trestle Scaffolding:-
1) Working platform supported on movable contrivances such as ladders,tripods etc,mounted on wheels.
2) Useful for minor repairing or painting work inside the room.
3) Maximum height upto which is type of scattering can be adopted is about 5 m.
