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Concrete Technology and Design of Concrete Structures

Concrete Technology and Design of Concrete Structures
Poisson’s ratio for concrete

None of these
increases with richer mixes
remains constant
decreases with richer mixes

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Concrete Technology and Design of Concrete Structures
Cube strength of controlled concrete to be used for pretensioned and post-tensioned work respectively should not be less than

42 MPa and 53 MPa
35 MPa and 42 MPa
42 MPa and 35 MPa
53 MPa and 42 MPa

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Concrete Technology and Design of Concrete Structures
For a simply supported beam of span 15m, the minimum effective depth to satisfy the vertical deflection limits should be

600 mm
900 mm
750 mm
more than 1 m

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Concrete Technology and Design of Concrete Structures
The recommended value of modular ratio for reinforced brick work is

88
40
99
35

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Concrete Technology and Design of Concrete Structures
Critical section for shear in case of flat slabs is at a distance of

at the periphery of column
at the drop panel of slab
d/2 from periphery of column/capital/ drop panel
effective depth of slab from periphery of column/drop panel

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Concrete Technology and Design of Concrete Structures
In a ring beam subjected to uniformly distributed load
i) shear force at mid span is zero
ii) shear force at mid span is maximum
iii) torsion at mid span is zero
iv) torsion at mid span is maximum
The correct answer is

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

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