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Concrete Technology and Design of Concrete Structures

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

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

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Concrete Technology and Design of Concrete Structures
The minimum cover to the ties or spirals should not be less than

20 mm
25 mm
50mm
15 mm

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Concrete Technology and Design of Concrete Structures
Finer grinding of cement

affects only the ultimate strength
both (a) and (b)
affects only the early development of strength
does not affect the strength

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Concrete Technology and Design of Concrete Structures
In a counterfort retaining wall, the main reinforcement is provided on the i) bottom face in front counterfort ii) inclined face in front counterfort iii) bottom face in back counterfort iv) inclined face in back counterEort The correct answer is

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

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Concrete Technology and Design of Concrete Structures
Shrinkage of concrete depends upon i) humidity of atmosphere ii) passage of time iii) stress The correct answer is

(ii) and (iii)
All (i), (ii) and (iii)
(i) and (ii)
only (iii)

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Concrete Technology and Design of Concrete Structures
Ultimate strength of cold drawn high steel wires

does not depend on diameter of bar
increases with increase in diameter of bar
None of these
decreases with increase in diameter of bar

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