Question

For 12 mm thick cement plastering 1 : 6 on 100 sq.m new brick work, the quantity of cement required, is _________

(a) 0.190 m^3

(b) 0.230 m^3

(c) 0.174 m^3

(d) 0.274 m^3

The question was asked during an online exam.

I'd like to ask this question from Labour Rates for Workers topic in portion Schedule of Rates Metric and F.B of Civil Engineering Drawing

Answer 1

Correct answer is (d) 0.274 m^3

The best I can explain: Given volume = 100*.012 = 1.2cum.

Increase mortar by 30% = 1.56cum.

For volume of dry mortar increase 25% = 1.56+ (1.56*.25) = 1.95cum.

Now proportion = 1:6.

k+6k = 7k.

So volume of cement = (1/7) * 1.95 = 0.2785.