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Due to ________ the external faces of wall become the sources of entry of dampness in a structure.(a) Exposed tops of walls(b) Miscellaneous causes(c) Action of rain(d) CondensationThe question was posed to me by my school teacher while I was bunking the class.I need to ask this question from Dampness in portion Damp Proofing, Water Proofing and Termite Proofing of Construction & Building Materials

Answer»

Right choice is (c) ACTION of rain

To explain I would say: If faces of wall, exposed to HEAVY showers of rain, not SUITABLE protected, they become the sources of ENTRY of the DAMPNESS in a structure. Similarly, the leaking roof also permits the rain water to enter the structure.



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