Building Materials Based on its dry weight, a freshly felled tree may contain water 75 % 50 % 25 % 100 % 75 % 50 % 25 % 100 % ANSWER DOWNLOAD EXAMIANS APP
Building Materials Proper amount of entrained air in concrete results in(i) Better workability(ii) Better resistance to freezing and thawing(iii) Lesser workability(iv) Less resistance to freezing and thawing (ii) and (iii) (i) and (iv) (i) and (ii) (iii) and (iv) (ii) and (iii) (i) and (iv) (i) and (ii) (iii) and (iv) ANSWER DOWNLOAD EXAMIANS APP
Building Materials The percentage of alumina and silica in good fire clay vary respectively is 25, 75 All of these 30, 70 35, 65 25, 75 All of these 30, 70 35, 65 ANSWER DOWNLOAD EXAMIANS APP
Building Materials The weight of a good quality brick when immersed in water for a period of 16 hours should not exceed the weight of dry brick 15 % 10 % 20 % None of these 15 % 10 % 20 % None of these ANSWER DOWNLOAD EXAMIANS APP
Building Materials The rock generally used for roofing, is Basalt Slate Pumice Granite Basalt Slate Pumice Granite ANSWER DOWNLOAD EXAMIANS APP
Building Materials The cracks caused by shrinkage of the exterior surface of the wood exposed to atmosphere, are called: Twisted fibres Radial shakes Heart shakes Wind cracks Twisted fibres Radial shakes Heart shakes Wind cracks ANSWER DOWNLOAD EXAMIANS APP
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