Question

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

I have been asked this question in final exam.

Asked question is from Estimate of Single & Double Room Building in portion Methods of Building Estimate & Estimate of Building of Civil Engineering Drawing

Answer 1

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.