For first class building D.P.C. shall be __________ thick cement concrete 1:1 1/2:3.
(a) 10.5 cm
(b) 2.5 cm
(c) 5.5 cm
(d) 0.5 cm
I have been asked this question in a national level competition.
This question is from General Specifications topic in section Specifications, Estimation of Quantities of Materials and Transport of Civil Engineering Drawing