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A recent development known as the ___________ roof has combine the advantages of flat roofs and curved roof.(a) Corrugated Inclined(b) Doubly curved tile(c) Asbestos cement tile(d) Galvanising iron tilesThe question was asked in class test.This is a very interesting question from Curved Roofs topic in division Roofing Materials of Construction & Building Materials

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The correct answer is (B) Doubly curved tile

The explanation: Here, the precast units of cement CONCRETE tiles are PREPARED at the SITE. The SIZE of the tile is kept about 700 mm x 700 mm with a uniform thickness of at least 20 mm. The cement concrete of proportion 1:2:4 is adopted and the units are properly cured.



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