68.

69.

70.

71

72.

78.

74.

75.

76.

The height to diameter ratio of cylindrical specimen 808 uniaxial compression test 08
concrete is :

(ಯ) 0 (B) 0.30
(0) 025 യ 0

‘Which of the following is a measure of dynamic modulus of elasticity of concrete?
(A) Tangent modulus (B) Secant modulus
(C) Initial tangent modulus (D) All the above

The partial safety factor for strength of concrete for service ability limit state is :
ക 1.00 ®) 1.10
© 115 യ 125

‘When reinforcement bars placed short of their required length need to be extended, we use :
(A) anchorages (B) standard bends and hooks 5
(0 development length (D) splices

The ultimate moment of resistance by LSM for a beam with b = 300 mm, d = 550 mm,
M20 concrete, reinforced with 4-25mm dia Fe250 bars :

ക 146 kNm (छ) 194kNm
ര 200 kNm യ) 210kNm

Relation between Young's modulus and cube strength of concrete is :
4 E, =500yF, © 2-5700
(0 E,=5000F, (0) छ. = 700५

The minimum area of tension reinforcement required in a rectangular beam section
200 mm x 400 mm if Fe415 steel is used at 256 mm effective cover :

(ಹ) 154 mm? _ (൮൫ 180 mm?
(C) 164 mm? (D) 193 mm?

Effective span of a simply supported beam is :
(8) 17866 10 face distance of supports (B) Clear span + effective depth
(C) Clear span — effective depth (D) Clear span + effective depth /2

Minimum grade of concrete for pre tensioned pre-stressed concrete :
)۵ 0 ‏ہہ‎ ۵
(© M40 © 5

11 143/2015
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