Advantage of cavity walls Precautions to be taken constructing cavity walls

In this Article Learn Cavity wall, Advantage of cavity walls Precautions to be taken while constructing cavity walls,bricks or metal,bonding bricks or metal Cavity walls A cavity wall is a double leaf wall having a cavity in between. The outer leaf is generally 10 cm thick and the inner leaf may be 10 cm or 20 cm thick with 5—8 cm wide cavity. The two leaves :are connected together with the help of bonding bricks or metal tie rods. The cavity is extended right upto the foundation concrete sometimes and then it is filled with cement concrete upto the ground .level. The cavity should be upto the roof-level. The bonding bricks or metal ties are placed at a distance of 1 m to 1'2 m horizontally and 60 cm—80 cm vertically in a staggered fashion. During the construction, care should be taken to see that mortar is not allowed to…

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Effects of dampness, sources of dampness, prevention of dampness

In this Article Learn Causes dampness, Effects of dampness, sources of dampness : Rising moisture of the ground,From the external walls,  Top of walls, Condensation, prevention of dampness Dampness One of the most important requirements .of a building is that it should remain dry, that is, damp proof. If this condition is not satisfied, it is likely that the building may become unhygienic to the inhabitants and unsafe from the structural point of view, because dampness breeds germs of certain diseases and disintegrates the structure. Effects of dampness The following are the effects of dampness : A damp building creates unhealthy conditions for the inhabitants. It disintegrates the structure. Unsightly patches, called efflorescence are formed on the surface of walls. Decay of timber takes place rapidly in the damp climate. Sources of Dampness The various causes which are responsible for causing dampness in a building are as follows : Rising…

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