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For 2.5 cm thick c.c. floor of 1:2:4 proportion, for 100 sq m, how many cement bags will be required?(a) 18(b) 28(c) 24(d) 10I have been asked this question in an internship interview.I need to ask this question from Analysis of Rates of Cement Concrete in chapter Analysis of Rates of Civil Engineering Drawing

Answer»

The correct choice is (C) 24

Easiest explanation: 100 SQ m total dry volume of materials = 2.75+50% = 2.75+1.375 = 4.125 CU m. Therefore, cement = (4.125) / (1+2+4) = .59 cu m = .60 cu m (18 bags). For neat cement surface finishing additional 0.2 cu m (6 bags) of cement will be required.



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