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Concrete Technology and Design of Concrete Structures

Concrete Technology and Design of Concrete Structures
The fineness modulus of fine aggregate is in the range of

6.0 to 8.5
2.0 to 3.5
3.5 to 5.0
5.0 to 7.0

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Concrete Technology and Design of Concrete Structures
The design yield stress of steel according to IS: 456-1978 is (where fy is the characteristic yield strength of steel)

0.57 fy
0.87 fy
0.37 fy
0.67 fy

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Concrete Technology and Design of Concrete Structures
In symmetrically reinforced sections, shrinkage stresses in concrete and steel are respectively

both tensile
tensile and compressive
compressive and tensile
both compressive

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Concrete Technology and Design of Concrete Structures
If the permissible stress in steel in tension is 140 N/mm², then the depth of neutral axis for a singly reinforced rectangular balanced section will be

0.35 d
0.40 d
0.45 d
dependent on grade of concrete also

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Concrete Technology and Design of Concrete Structures
Air entrainment in the concrete increases

strength
the unit weight
the effects of temperature variations
workability

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Concrete Technology and Design of Concrete Structures
In a counterfort retaining wall, the main reinforcement is provided on thei) bottom face in front counterfortii) inclined face in front counterfortiii) bottom face in back counterfortiv) inclined face in back counterEortThe correct answer is

(i) and (ii),
(ii) and (iii)
(iii) and (iv)
(i) and (iv)

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