61.

62.

63.

64.

65.

66.

67.

68.

062/23

The recommended value of maximum water cement ratio for concrete using 20 mm
nominal maximum size aggregates subjected to extreme exposure is

A) 0.45 8) 0.4 C) 0.5 D) 0.55

In Limit State method, which of the following statements is correct ?

A) Permissible strain have an upper limit for concrete and strain variation across
the cross section is linear

B) Stress variation across the section of concrete is linear and the maximum
stress value is limited

C) Stress variation across the section of concrete is linear and the maximum
strain value is limited

D) None of the above

The bending moment corresponding to the first cracking for a simply supported plain
concrete beam of 200 mm wide and 300 mm deep, subjected to two equally spaced
point loads given that the grade of concrete is M25

A) 10.5 kNm B) 12 kNm C) 21 kNm D) 5.25 kNm

Thickness of slab is 70 mm. The maximum dia. of reinforcement that can be used is
A) 8mm B) 10mm Cc) 12mm D) 16mm

The long term static modulus of elasticity of concrete is

A) More than short term modulus of elasticity

B) May be more or less than short term modulus depending on the strength of
concrete

C) Long term modulus can be as low as “1/2.6” of short term static modulus of
elasticity

D) None of the above

For a simply supported beam of span 11 m, the minimum effective depth required
assuming tension and compression modification factors as 1.0 and 1.1 is

A) 550 mm B) 600 mm C) 650 mm D) 700 mm
For beams with Fe 500 steel Xumax/d and Mulimit are given by

A) 0.53 and 0.148 fod? B) 0.48 and 0.148 fod?

C) 0.46 and 0.138 fod D) 0.46 and 0.133 fod

The development length in compression for high yield strength deformed bars is given

by | ५ = £ terms have the usual significance and “k” is a constant. The value of
“۷ is bd
A) 3.2 B) 6.4 ©) 8 D) 5

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