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
Related Mcqs:
- Select the incorrect statement?
A. Lean mixes bleed more as compared to rich ones
B. Bleeding can be minimized by adding pozzuolana finer aggregate
C. Bleeding can be increased by addition ‘of calcium chloride
D. none of the above - Select the correct statement?
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 - Select the correct statement?
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 - Which of the following statements is incorrect ?
A. Minimum cross sectional area of longitudinal reinforcement in a column is 0.8%
B. Spacing of longitudinal bars measured along the periphery of column should not exceed 300 mm
C. Reinforcing bars in a column should not be less than 12 mm in diameter
D. The number of longitudinal bars provided in a circular column should not be less than four - Air entrainment in the concrete increases________________?
A. workability
B. strength
C. the effects of temperature variations
D. the unit weight - The fineness modulus of fine aggregate is in the range of______________?
A. 2.0 to 3.5
B. 3.5 to 5.0
C. 5.0 to 7.0
D. 6.0 to 8.5 - The minimum cover in a slab should neither be less than the diameter of bar nor less than_______________?
A. 10 mm
B. 15 mm
C. 25 mm
D. 13 mm - If the storey height is equal to length of RCC wall, the percentage increase in strength is_____________?
A. 0
B. 10
C. 20
D. 30 - Due to circumferential action of the spiral in a spirally reinforced column________________?
A. capacity of column is decreased
B. ductility of column reduces
C. capacity of column is decreased but ductility of column increases
D. both the capacity of column and ductility of column increase - Which of the following losses of prestress occurs only in pretensioning and not in post-tensioning ?
A. elastic shortening of concrete
B. shrinkage of concrete
C. creep of concrete
D. loss due to friction
