Distribution of shear intensity over a rectangular section of a beam, follows:
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If the shear stress in a R.C.C. beam is
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In a pre-stressed member it is advisable to use
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In a simply supported slab, alternate bars are curtailed at
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If L is the effective span of a R.C.C. beam which is subjected to maximum shear qmax at the ends, the distance from either end over which stirrups for the shear, are provided, is
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Total pressure on the vertical face of a retaining wall of height h acts parallel to free surface and from the base at a distance of
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In a pre-stressed beam carrying an external load W with a bent tendon is having angle of inclination θ and pre-stressed load P. The net downward load at the centre is
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If the ratio of long and short spans of a two way slab with corners held down is r, the actual reduction of B.M. is given by
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An R.C.C beam of 25 cm width has a clear span of 5 metres and carries a U.D.L. of 2000 kg/m inclusive of its self weight. If the lever arm of the section is 45 cm., the beam is
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The minimum clear cover for R.C.C. columns shall be
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The maximum shear stress (q) in concrete of a reinforced cement concrete beam is
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If the length of an intermediate span of a continuous slab is 5 m, the length of the end span is kept
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If the tendon is placed at an eccentricity e below the centroidal axis of the longitudinal axis of a rectangular beam (sectional modulus Z and stressed load P in tendon) the stress at the extreme top edge
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A foundation is called shallow if its depth, is
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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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A T-beam behaves as a rectangular beam of a width equal to its flange if its neutral axis
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An R.C.C. beam of 6 m span is 30 cm wide and has a lever arm of 55 cm. If it carries a U.D.L. of 12 t per m and allowable shear stress is 5 kg/cm2, the beam
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A pre-stressed rectangular beam which carries two concentrated loads W at from either end, is provided with a bent tendon with tension P such that central one-third portion of the tendon remains parallel to the longitudinal axis, the maximum dip h is
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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 the permissible compressive stress for a concrete in bending is C kg/m2, the modular ratio is
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