Basics in Building Construction

Building Components And Types

Lesson 21 : Upper Floors

Pre-Cast Concrete Floors

With the modern developments in construction technology, precast beam – slab units are now available with the help of which the floors can be constructed easily and expeditiously, without the aid of any form work. These precast units are available in about 25 cm width, various depths, and various spans, and can be supported either on walls or on rolled steel joists. The sides of each unit are provided with grooves to form connecting joggles for adjacent units. The joints are grouted with cement mortar, using concrete guns. Such floors are economical, light weight, sound proof, fire proof, and economical.