WHAT IS DAMP-PROOFING? CAUSES AND EFFECTS OF DAMPNESS.
DAMP-PROOFING One of the basic requirement in case of all buildings is that the structure should remain dry as far as possible. If this condition is not satisfied, it is likely that the building may become un-habitable and unsafe from structural point of view. Hence in order to prevent damp into a building, courses provided at various levels of entry of damp into a building which is known as damp-proofing. Thus the provision of damp-proofing courses prevent the moisture entry into the building. Causes of dampness : Various causes which are responsible for the entry of dampness in a structure are as follows : 1. Rising of moisture from the ground: The ground on which the building is constructed may be made of soils which easily allow water to pass. Usually, building materials used for foundations, absorb moisture from capillary motion. Thus dampness finds its way to enter into a building. 2. Action of rain : If the faces of wall exposed to heavy shower of rain, are n