Civil Engineering :: Structural Design Specifications
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If fck is the characteristic cube strength of concrete in N/mm2, the modulus of elasticity of structural concrete Ec = afck where the value of a, is
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The effective depth of a shallow beam is the distance between
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The minimum area of cross section of reinforcement in either direction of a slab should not be less than ...... of the slab cross section
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Pick up the correct statement from the following:
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Pick up the correct statement for the web stiffeners.
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Removal of props under
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To achieve uniform colour and consistency of the concrete by using ordinary Portland cement, the mixing time may be
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For calculating critical compression stress in bending Cs for sections symmetrical about the x-x axis, from the formula
, the value of G is taken -
For the proportions
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Columns are designed for a minimum eccentricity equal to 1/30 (unsupported length ofthe column), subject to a minimum of
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A.
The effective span of a simply supported beam is clear span plus its effective depth or centre to centre of supports whichever is less
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B.
The effective span of a simply supported slab is clear span plus its effective depth or centre to centre of supports whichever is less
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C.
The effective span of a continuous beam or slab is the clear span plus its effective depth or centre to centre of supports whichever is less, provided the width of the support is less than
 of clear span |
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D.
For spans with roller or rocker bearing, the effective span is the distance between the centres of bearings
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E.
All the above.
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A.
vertical stiffeners are spaced at a distance not greater than 1.5 d and not less than 0.33 d
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B.
d is the distance between flange angles or the clear distance between flanges
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C.
for horizontal stiffeners, d is the clear distance between the horizontal stiffener and the tension flange
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D.
all the above.
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