Civil Engineering :: Theory of Structures
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The equivalent length is of a column of length L having both the ends fixed, is
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. The moment of inertia of a rectangular section of width B and depth D about an axis passing through C.G. and parallel to its width is
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A masonry dam (density = 20, 000 N/m3) 6 m high, one metre wide at the top and 4 m wide at the base, has vertical water face. The minimum stress at the base of the dam when the reservoir is full, will be
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The ratio of tangential and normal components of a stress on an inclined plane through θ° to the direction of the force, is :
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For calculating the allowable stress of long columns
\( \sigma0\) = \(\frac {\sigma y} { n } \) [ 1-a[\( \frac { 1 } { r } ] ^2\) ] is the empirical formula, known as
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A steel plate d x b is sandwiched rigidly between two timber joists each D x B/2 in section. The moment of resistance of the beam for the same maximum permissible stress Ï in timber and steel will be (where Young's modulus of steel is m times that of the timber).
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The ratio of crippling loads of a column having both the ends fixed to the column having both the ends hinged, is
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Maximum strain theory for the failure of a material at the elastic limit, is known as
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A cantilever of length L is subjected to a bending moment M at its free end. If EI is the flexural rigidity of the section, the deflection of the free end, is
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The maximum bending moment for a simply supported beam with a uniformly distributed load w/unit length, is