The ratio of maximum instantaneous stress due to sudden loading to the maximum stress due to gradual loading will be 

Concrete gains strength due to

An air entraining agent when added in concrete improves

The actual numerical value of tensile stress is………..than the theoretical stress (engineering stress…

Minimum spacing between horizontal parallel reinforcements of the different size should not be less than

In R.C.C. beams , the tension reinforcement can be cut off at a point when it is no longer needed if

Approximate permissible tensile strength of concrete M15 , is

For a simply supported beam with a central load, the bending moment is

Stress is directly proportional to strain within the elastic limit is given by