1. The primary compression failure in RCC beam is caused in
a ) under-reinforced beams
b ) balanced beams
c ) over-reinforced beams
d ) all types of beams
2. The secondary compression failure in RCC beam is caused in
a ) under – reinforced beams
b ) balanced beams
c ) over – reinforced beams
d ) all types of beams
3. In a singly reinforced beam , if the concrete is stressed to its allowable limit earlier than steel , the section is said to be
a ) over reinforced section
b ) under reinforced section
c ) balanced section
d ) economical section
4. The types of failure in which stress concrete and steel reaches its permissible value at a time is called balance failure . At this stage location of neutral axis is
a ) above the critical neutral axis
b ) match with critical neutral axis
c ) below the critical neutral axis
d ) all of the above
5. In a RCC beam , if amount of steel increases the depth of N.A.
a ) constant
b ) decreases
c ) increases
d ) none of the above
6. The spiral crack in a beam is developed due to
a ) shear force
b ) bending moment
c ) torsional moment
d ) thrust
7. Spacing of stirrups in a rectangular beam is
a ) kept constant throughout the length
b ) decreased towards the centre of the beam
c ) increased at the ends
d ) increased at the centre of the beam
8. By over reinforcing a beam , the moment of resistance can be increased not more than
a ) 10 %
b ) 15 %
c ) 20 %
d ) 25 %
9. Minimum percentage of tension reinforcement in RCC beams is
a ) 0.85bd/fy
b ) 4
c ) 0.30
d ) 40 Sy/fyd
10. Minimum percentage of shear reinforcement in RCC beams is
a ) 80/fy
b ) 4
c ) .30
d ) 40 Sy/fyd
11. Maximum allowable percentage of tension and compression reinforcement in RCC beams are …….. respectively. 80
a ) 80/fy
b ) 4
c ) .30
d ) 40 Sy/fyd
12. In a RCC cantilever member , main reinforcement is provided at
a ) top fibre
b ) bottom fibre
c ) side fibre
d ) top and bottom fibre
13. In a RCC simply supported member , main reinforcement is provided at
a ) top fibre
b ) bottom fibre
c ) side fibre
d ) top and bottom fibre
14. In a RCC continuous member , main reinforcement is provided at
a ) top fibre
b ) bottom fibre
c ) side fibre
d ) top and bottom fibre
15. Main reinforcements provided in RCC beam is subjected
a ) compression
b ) tension
c ) both of the above
d ) none of the above
16. Main reinforcement in RCC beam is provided to resist
a ) bending moment
b ) shear force
e ) axial force
d ) none of the above
17. Shear reinforcement in RCC beam is provided to resist
a ) bending moment
b ) shear ce
c ) axial force
d ) none of the above
18. Side face reinforcement is provided in a beam when depth of the web in a beam exceeds
a ) 250 mm
b ) 500 mm
c ) 750 m m
d ) 1000 mm 40S
19. The maximum spacing of side face reinforcement in a beam should be
a ) 100 mm
b ) 200 mm
d ) 400 mm
c ) 300 mm
20. Singly reinforced beam & doubly reinforced beam are decided based on
a ) bending moment
b ) shear force
c ) bending moment & shear force
d ) none of the above
21. Doubly reinforced beam is done for
a ) if insufficient load is taken by singly reinforced beam
b ) it is economical
c ) in any case
d ) none of the above
22 . The radius of a bar bend to form a hook , should not be less than
a ) twice the diameter
b ) thrice the diameter
c ) four times the diameter
d ) five times the diameter
23. Lapped splices in tensile reinforcement are generally not used for bars of size larger than
a ) 18 mm diameter
b ) 24 mm diameter
c ) 30 mm diameter
d ) 36 mm diameter
24. Steel bars are generally connected together to get greater length than the standard lengths by providing
a ) straight bar splice
b ) hooked splice
c ) dowel splice
d ) all of the above
25. The length of straight portion hook should be at least of a bar beyond the end of the
a ) four times the diameter
b ) five times the diameter
c ) six times the diameter
d ) seven times the diameter
