1. For a cantilever of effective depth of 50cm, the maximum span to satisfy the vertical deflection limit is
a ) 3.0m
b ) 3.5m
c ) 4.0m
d ) 4.5m
2. Generally compressive strength of cover block is more than the compressive strength of the concrete . The main function of cover block is
a ) maintain cover side of steel
b ) maintain cover between steel and formwork
c) maintain cover above steel
d) maintain cover below steel
3. In a singly reinforced
a ) compression is borne entirely by concrete beam
b ) steel possesses initial stresses wheb embedded in concrete
c ) plane sections traverse to the center line of the beam before bending remain plane even after bending ) maintain cover above steel
d ) elastic modulii of concrete and steel have different values within the limits of deformation of the beam
4. In a singly reinforced beam , the effective depth is measured from its compression edge to
a ) tensile edge
b ) tensile reinforcement
c ) neutral axis of the beam equal to
d ) longitudinal central axis
5. The anchorage value of standard hook is taken as 16 times the diameter of the reinforcing bar , if the angle of the bend is
a ) 30⁰
b ) 40⁰
c ) 180 °
d ) any of the above
6. For bars in tension a standard hook has an anchorage value equivalent to a straight length of
a ) 8Φ
b ) 12Φ
c ) 16Φ
d ) 20Φ
7. The reinforcement is bent at an inclination of ********* at the ends of the beam .
a ) 45⁰
b ) 60⁰
c ) 135°
d ) 90⁰
8. Due to shrinkage stress , a simply supported beam having reinforcement only at bottom tends to
a ) deflect downward
b ) deflect upward
c ) deflect upward or downward
d ) none of the above
9. Steel beam theory is used for
a ) design of simple steel beams
b ) steel beam incased in concrete
c ) beam if shear exceeds 4 times allowable shear stress
d ) doubly reinforced beams ignoring compressive stress in concrete
10. According to steel beam theory of doubly reinforced beams
a ) tension is resisted by tension steel
b ) compression is resisted by compression steel
c ) stress in tension steel equals the stress in compression steel
d ) no stress is developed in compression as well as tension concrete
e ) all of the above
11. A simply supported beam shall be deemed to be a deep beam if the ratio of effective span to overall depth , is
a ) 2
b ) 2.5
c ) 3
d ) 3.5
12. A continuous beam shall be deemed to be a deep beam if the ratio of effective span to overall depth , is
a ) 2
b ) 2.5
c ) 3
d ) 3.5
13. The steel generally used in RCC work is
a ) stainless
b ) mild steel
c ) high carbon steel
d ) high tension steel
14. A beam curved in plan is designed for
a ) bending moment and shear
b ) bending moment and torsion
c ) shear and torsion
d ) bending moment , shear and torsion
15. The neutral axis of a T – beam exists
a ) within the flange
b ) at the bottom edge of the slab
c ) below the slab
d ) all of the above
16. A T – beam behaves like a rectangular beam of width equal to its flange if its neural axis
a ) remains within the flange
b ) remains within the web
c ) coincide with geometrical center of the beam
d ) none of the above
17. In a T beam over all depth of rib ( in case of heavy load)
a ) 1/20 of the span
b ) 1/15 of the span
c ) 1/12 of the span
d ) none of the above
18. The minimum cover in a slab is neither less than the diameter of bar nor less than
a ) 15mm
b ) 20mm
c ) 25mm
d ) 30mm
19. For a continuous slab of 3mx3.5m size, the minimum overall depth of slab to satisfy vertical deflection limit is,
a ) 5cm
b ) 7.5cm
d ) 12cm
c ) 9cm
20. The ratio of the diameter of reinforcing bars and the slab thickness should not be greater than
a ) 1/5
b ) 1/6
c ) 1/7
d ) 1/8
21. The pitch of the main bars in a simply supported slab, should not exceed its depth by
a ) three times
b ) four times
c ) five times
d ) six times
22. Distribution reinforcement in a simply supported slab is provided to distribute
a ) load
b ) temperature stress
c ) shrinkage stress
d ) all of the above
23. In a simply supported slab , alternate bars are curtailed at
a ) 1/4 of the span
b ) 1/5 of the span
c ) 1/6 of the span
d ) 1/7 of the span
