Author: Haroon Khalil
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Steel Scaffolding
In this type of scaffolding steel tubes are used instead of timber. Further 40–50 mm diameter tubes of 5 mm thick are used. These tubes are commercially available in suitable lengths with special couplings and set screws. Although it is strong and suitable it can be used up to a specific height. Figure 22.7 shows…
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Trestle Scaffolding
In this type of scaffolding, the working platforms are supported on tripods, ladders, etc., which are mounted on boggies, wheels or lorries. This is suitable for minor repairs or painting work within a height of 5 m.
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Suspended Scaffolding
This is a light type of scaffolding used only for maintenance works like pointing, white washing, etc. The working platform is suspended from the roofs. Special arrangements are made with pulleys, ropes, etc., to suspend the platform from the roof and to raise or lower based on the need. As it does not create any…
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Cantilever or Needle Scaffolding
In this type of scaffolding the general framework may be of single or double type of scaffolding. But the standards are supported by needles or ties. These ties are projected out at floor levels or through openings or through holes provided in the masonry. Two types cantilever scaffolding are shown in Fig. 22.6. Figure 22.5 Double…
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Double Scaffolding or Mason’s Scaffolding
This type of scaffolding is stronger than the single scaffolding. This is similar to that of single scaffolding except two rows of standards are used. Out of these two standards, one is close to the wall and the other is 1.2–1.5 m away from the face of the wall, Fig. 22.5. Here, no holes are…
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Single Scaffolding or Bricklayer’s Scaffolding
This type of scaffolding is commonly used and particularly in the construction of brickwork. It consists of a single row of standards placed at a distance of about 1.20 m from the wall. The spacing between the standards is about 2–2.5 m. The ledgers are fixed at a vertical distance of 1.20–1.80 m on the…
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Requirements of Scaffolding
Scaffolding has to satisfy the following requirements irrespective of the material used:
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Components of Scaffolding
For a specific work of construction, a formwork is done using one or all of the following components. 1. Standards These are the vertical members of a scaffold which are either supported on the ground or embedded in to the ground or rested on sand-filled bags. 2. Ledgers These are the horizontal members of the…
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SCAFFOLDING
In the routine construction work, sometimes it is necessary to have some temporary structure or support to continue the work. When the height of construction exceeds about 1.5 m, temporary structures are needed. Temporary structure is erected close to the work so as to provide a safe working platform for the workers and to provide…