1. bottom face near counterfort 2. top face near counterfort 3. bottom face near centre of span 4. top face near centre of span The correct answer is
A. only (1)
B. only (2) C. both (1) and (4)
D. both (2)and (3)
1. reduces the negative moment at support 2. increases the negative moment at support 3. reduces the positive moment at center of span 4. increases the positive moment at center of span
The correct answer is?
A. (1) and (3) B. (1) and(4)
C. (2 )and (3)
D. (2) and (4)
A. The loss of prestress is more in pre-tensioning system than in post-tensioning system.
B. Pretensioning system has greater certainty about its durability.
C. For heavy loads and large spans in buildings or bridges, post-tensioning system is cheaper than pretensioning system D. none of the above
A. Elastic modulus of high tensile steel is nearly the same as that of mild steel
B. Elastic modulus of high tensile steel is more than that of mild steel
C. Carbon percentage in high carbon steel is less than that in mild steel
D. High tensile steel is cheaper than mild steel