Question

In mud-phuska terracing with tile paving, bitumen is spread over the R.C.C. slabs at the rate of ________ of bitumen per m^2 of the roof surface.

(a) 0.7 kg

(b) 1.7 kg

(c) 2.7 kg

(d) 3.7 kg

The question was asked in semester exam.

My question is based upon Flat Terraced Roofing in division Roofing Materials of Construction & Building Materials

Answer 1

Correct choice is (b) 1.7 kg

The explanation is: In mud-phuska terracing with tile paving, bitumen is spread over the R.C.C. slabs at the rate of 1.7 kg of bitumen per m^2 of the roof surface. A layer of coarse sand is spread over this bitumen at the rate of 0.6 cubic metres of sand for 100 m^3 of the roof surface.