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Which is not the nominal thickness of D.P.C?(a) 2cm(b) 2.5cm(c) 4cm(d) 2.5″ |
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Answer» Right choice is (d) 2.5″ Best explanation: Damp proofing is accomplished several ways including: • A damp-proof course (DPC) is a barrier through the structure designed to prevent moisture rising by capillary action such as through a phenomenon known as rising damp. Rising damp is the effect of water rising from the ground into property. The damp proof course may be horizontal or vertical. A DPC layer is usually laid below all masonry walls, regardless if the wall is a load bearing wall or a partition wall. • Integral damp proofing in concrete involves adding materials to the concrete mix to make the concrete itself impermeable. • Surface coating with thin water proof materials for resistance to non-pressurized moisture such as rain water or a coating of cement sprayed on such as shotcrete which can resist water under pressure. • Cavity wall construction, such as rainscreen construction, is where the interior walls are separated from the exterior walls by a cavity. • Pressure grouting cracks and joints in masonry material. |
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