EXAMIANS
According to I.S. : 456, slabs which span in two directions with corners held down, are assumed to be divided in each direction into middle strips and edge strips such that the width of the middle strip, is
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If p1 is the vertical intensity of pressure at a depth h on a block of earth weighing w per unit volume and the angle of repose φ, the lateral intensity of pressure p2 is
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The section of a reinforced beam where most distant concrete fibre in compression and tension in steel attains permissible stresses simultaneously, is called
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Post tensioning system
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If a bent tendon is required to balance a concentrated load W at the centre of the span L, the central dip h must be at least
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[A + (m - 1)ASC] known as equivalent concrete area of R.C.C. is given by
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An R.C.C. roof slab is designed as a two way slab if
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The live load to be considered for an accessible roof, is
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As the percentage of steel increases
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For a ribbed slab
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