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For 100 sq. m cement concrete (1 : 2: 4) 4 cm thick floor, the quantity of cement required, is _______(a) 0.90 m^3(b) 0.94 m^3(c) 0.98 m^3(d) 0.98 m^3 |
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Answer» The correct choice is (b) 0.94 m^3 The explanation is: Volume – area * thickness. So, 100 *.04 = 4 cubic metre, 10% for uneven surface. 4 * 10% = .04 = 4.4cubic metre. 50% for dry mortar, 4.4 * 50% = 2.2. = 6.6cubic meter. Cement = 6.6/(1 + 2 + 4) = .94 cubic meter. |
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