Beams and Slabs -2

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1. If the permissible stress in tension is 140N/mm2 , then the depth of neutral balanced section using working stress method

A) 0.35d
B) 0.40d
C) 0.45d
D) dependent on grade of concrete also

... Answer is B


 

2. A continuous beam is deemed to be a deep beam when the ratio of effective span to overall depth (l/D) is less than 

A) 1.5
B) 2.0
C) 2.5
D) 3.0

... Answer is C

 

3. According to IS 456 , the maximum depth of stress block for balanced section of a beam of effective depth d is

A) 0.43d
B) 0.55d
C) 0.68d
D) 0.85d

... Answer is A

 

4. In a doubly reinforced rectangular beam , the allowable stress in compression steel is

A) equal to the permissible stress in tension in steel
B) more than the permissible stress in tension in the steel
C) less than the permissible stress in tension in the steel
D) not related to the concrete compression stress

... Answer is C

 

5. The side face reinforcement is required in a T beam will be

A) 0.1% of web area
B) 0.15% of web area
C) 0.2% to 0.3% of the web area depending upon the breadth of the web
D) half the longitudinal reinforcement

... Answer is A

 

6. Deep beams are designed for

A) shear force only
B) bending moment only
C) both shear force and bending moment
D) bearing

... Answer is B

 

7. min clear cover (mm) to the main steel bars in  slabs, beams, column and footing respectively are

A) 10,15,20,25
B) 15,25,40,75
C) 20,25,30,40
D) 20,35,40,75

... Answer is B

 

8. Beam sections designed in accordance with LSM as compared to sections designed in WSM will have

A) larger depth and smaller amount of reinforcement
B) same depth and same reinforcement
C) smaller depth and more reinforcement
D) same depth as that of the deep beam

... Answer is C

 

9. If the depth of actual neutral axis in a beam is more than the depth of critical neutral axis, the beam is

A) balanced beam
B) under reinforced beam
C) over reinforced beam
D) none of the above

... Answer is C

 

10. For a continuous slab of 3m x 3.5m size the minimum overall depth of slab to satisfy vertical deflection limits is

A) 5 cm
B) 7.5 cm
C) 10 cm
D) 12 cm

... Answer is C
L/d less than or equal to 32
 

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