Category: Precast Concrete Units

The preferred dimensions for different elements of a building considering the basic module are as follows: 1. Flooring and Roofing Scheme Precast slabs or other precast structural flooring units: 2. Beams 3. Columns 4. Walls 5. Staircase Width – Nominal width shall be in multiples of 1 M 6. Lintels 7. Sunshades/Chajja Projections Normally acceptable…

Modular Co-ordination For prefab construction and for the precast elements, modular co-ordination has to be followed. In this case, some basic module has to be adopted for general application to buildings and their components. The value of the basic module chosen is 100 mm for maximum flexibility and convenience. The symbol used for the basic…

There are certain aspects that discourage the use of precast concrete units under the following conditions:

Precast concrete has several advantages over cast-in-situ concrete:

Prefabrication is most suitable for large-scale housing programmes. Prefabrication technique is used as a cost-effective measure. As the components of any structure can be manufactured under controlled conditions, there is vast improvement in quality. It helps to use the locally available materials with required characteristics. The speed of construction is generally fast compared to cast-in-situ…

The term cast-in-situ concrete is applied to concrete members which are cast or poured in forms that are set up at the final position of the structure. In contrast, the term precast concrete is applied to individual concrete members of various shapes, which are designed to fit in a part of a whole structure, which…