Category: Temporary Supporting Structures

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…

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…

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…

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…

Following are the different types of scaffolding:

Scaffolding has to satisfy the following requirements irrespective of the material used:

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…

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…

Under no circumstance the forms are removed until the concrete has hardened sufficiently. Under normal weather conditions, the concrete is left in place as long as possible up to a maximum of 28 days. Figure 22.2 Formwork for square column Figure 22.3 Formwork for beam and slab However, the period to which the concrete should be left…

Materials generally used are timber and steel. Sometimes plywood and aluminium are also used. The choice of material to be used for the preparation of formwork depends on the nature of the job and economy. 1. Steel Formwork If it is intended to re-use the framework material for several times it is preferred to use…