EXAMIANS
If the average bending stress is 6 kg/cm² for M 150 grade concrete, the length of embedment of a bar of diameter d according to I.S. 456 specifications, is
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Dimensions of a beam need be changed if the shear stress is more than
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A raft foundation is provided if its area exceeds the plan area of the building by
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A reinforced concrete cantilever beam is 3.6 m long, 25 cm wide and has its lever arm 40 cm. It carries a load of 1200 kg at its free end and vertical stirrups can carry 1800 kg. Assuming concrete to carry one-third of the diagonal tension and ignoring the weight of the beam, the number of shear stirrups required, is
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If W is total load per unit area on a panel, D is the diameter of the column head, L is the span in two directions, then the sum of the maximum positive bending moment and average of the negative bending moment for the design of the span of a square flat slab, should not be less than
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The floor slab of a building is supported on reinforced cement floor beams. The ratio of the end and intermediate spans is kept
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The thickness of the topping of a ribbed slab, varies between
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‘P’ is the pre-stressed force applied to the tendon of a rectangular pre-stressed beam whose area of cross section is ‘A’ and sectional modulus is ‘Z’. The maximum stress ‘f’ in the beam, subjected to a maximum bending moment ‘M’, is
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The load stress of a section can be reduced by
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If the sides of a slab simply supported on edges and spanning in two directions are equal, the maximum bending moment is multiplied by
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