Civil Engineering :: Concrete Technology and Design of Concrete Structures
- For a reinforced concrete section, the shape of shear stress diagram is
- In prestressed concrete
- Due to shrinkage stresses, a simply supported beam having reinforcement only at bottom tends to
- The centroid of compressive force, from the extreme compression fiber, in limit state design lies at a distance of (where xu is the depth of neutral axis at the limit state of collapse)
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Examine the following statements :
i) Factor of safety for steel should be based on its yield stress,
ii) Factor of safety for steel should be based on its ultimate stress,
iii) Factor of safety for concrete should be based on its yield stress,
iv) Factor of safety for concrete should be based on its ultimate stress.
The correct statements are - Strength of concrete increases with
- In counterfort retaining walls, the main reinforcement in the stem at support is
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Assertion A : The load factor for live load is greater than that for dead load.
Reason R : The live loads are more uncertain than dead loads.
Select your answer based on the coding system given below : - Diagonal tension in a beam
- According to IS : 456-1978, the fiexural strength of concrete is
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A.
forces of tension and compression change but lever arm remains unchanged |
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B.
forces of tension and compressions remain unchanged but lever arm changes with the moment |
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C.
both forces of tension and compres-sion as well as lever arm change |
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D.
both forces of tension and compres-sion as well as lever arm remain unchanged |