Building Materials The coefficient of hardness of stones used in road work should be greater than 15 10 12 17 15 10 12 17 ANSWER DOWNLOAD EXAMIANS APP
Building Materials The moisture content in a well seasoned timber is 100 % 4 % to 6 % 10 % to 12 % 15 % to 20 % 100 % 4 % to 6 % 10 % to 12 % 15 % to 20 % ANSWER DOWNLOAD EXAMIANS APP
Building Materials The constituent of cement which is responsible for all the undesirable properties of cement is Tri-calcium silicate Tetra calcium alumino ferrite Di-calcium silicate Tri-calcium aluminate Tri-calcium silicate Tetra calcium alumino ferrite Di-calcium silicate Tri-calcium aluminate 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 Heart shakes Radial shakes Wind cracks Twisted fibres Heart shakes Radial shakes Wind cracks ANSWER DOWNLOAD EXAMIANS APP
Building Materials Granite is not suitable for ordinary building purpose because it can not be polished it has less crushing strength it is costly it is not a fire proof material it can not be polished it has less crushing strength it is costly it is not a fire proof material ANSWER DOWNLOAD EXAMIANS APP
Building Materials The basic purpose of a retarder in concrete is To improve the workability of concrete mix To increase the initial setting time of cement paste in concrete To render the concrete more water tight To decrease the initial setting time of cement paste in concrete To improve the workability of concrete mix To increase the initial setting time of cement paste in concrete To render the concrete more water tight To decrease the initial setting time of cement paste in concrete ANSWER DOWNLOAD EXAMIANS APP
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