981. The load factors for live load and dead load are taken respectively as_________________?
A. 1.5 and 2.2
B. 2.2 and 1.5
C. 1.5 and 1.5
D. 2.2 and 2.2
✅ The correct answer is option B.
Civil Engineering
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982. 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
✅ The correct answer is option B.
983. In a spherical dome subjected to concentrated load at crown or uniformly distributed load, the meridional force is always________________?
A. zero
B. tensile
C. compressive
D. tensile or compressive
✅ The correct answer is option C.
984. According to Whitney’s theory, depth of stress block for a balanced section of a concrete beam is limited to_______________?
A. 0.43 d
B. 0.537 d
C. 0.68 d
D. 0.85 d
✅ The correct answer is option B.
985. The maximum value of hoop compression in a dome is given by___________________?
A. wR / 4d
B. wR/2d
C. wR/d
D. 2wR/d
✅ The correct answer is option B.
986. The minimum diameter of longitudinal bars in a column is________________?
A. 6 mm
B. 8 mm
C. 12 mm
D. 16 mm
✅ The correct answer is option C.
987. The percentage of reinforcement in case of slabs, when high strength deformed bars are used is not less than________________?
A. 0.15
B. 0.12
C. 0.30
D. 1.00
✅ The correct answer is option B.
988. Cube strength of controlled concrete to be used for pretensioned and post-tensioned work respectively should not be less than__________________?
A. 35 MPa and 42 MPa
B. 42 MPa and 35 MPa
C. 42 MPa and 53 MPa
D. 53 MPa and 42 MPa
✅ The correct answer is option B.
989. The load carrying capacity of a helically reinforced column as compared to that of a tied column is about________________?
A. 5% less
B. 10% less
C. 5% more
D. 10% more
✅ The correct answer is option C.
990. In prestressed concrete______________?
A. forces of tension and compression change but lever arm remains unchanged
B. forces of tension and compressions remain unchanged but lever arm changes with the moment
C. both forces of tension and compres-sion as well as lever arm change
D. both forces of tension and compres-sion as well as lever arm remain unchanged
✅ The correct answer is option B.