A pre-stressed concrete member is preferred because
Options
A. its dimensions are not decided from the diagonal tensile stress
B. large size of long beams carrying large shear force need not be adopted
C. removal of cracks in the members due to shrinkage
D. all the above.
Correct Answer
all the above.
RCC Structures Design problems
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1. If A is the sectional area of a prestressed rectangular beam provided with a tendon prestressed by a force P through its centroidal longitudinal axis, the compressive stress in concrete, is
2. If the neutral axis of a T-beam is below the slab, the relationship between the flange width B, depth of neutral axis n, thickness of the slab ds, effective depth of the beam d, gross area of tensile steel At and the modular ratio m may be stated as
Correct Answer: high strength concrete and high tensile steel
5. If Md and Mt are the maximum bending moments due to dead load and live load respectively and F is the total effective pressure, for a balanced design of a prestreseed concrete beam of steel, is
10. If Ac, Asc and A are areas of concrete, longitudinal steel and section of a R.C.C. column and m and ?c are the modular ratio and maximum stress in the configuration of concrete, the strength of column is
