Civil Engineering :: Railways
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In India the rails are manufactured by
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Rail section first designed on Indian railways, was
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A scissors cross-over consists of
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To prevent percolation of water into formation, moorum is used as a blanket for
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Distance between inner faces of the flanges, is kept
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Wooden sleepers used on the girders of bridges, are generally made of
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If L1 and L2 are actual and theoretical lengths of a tongue rail, d is heel divergence and t is thickness of tongue rail at toe, the switch angle α is
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If D is distance between centres of two parallel track of gauge G, then, total length of cross-over (from the point of commencement to the point of termination) with an intermediate straight portion and N crossing, is given by
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If a 0.7% upgrade meets a 0.65% downgrade at a summit and the permissible rate of change of grade per chain length is 0.10%, the length of the vertical curve, is
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A.
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B.
four pairs of points, four acute angle crossings and four obtuse angle crossings |
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C.
four pairs of points, six acute angle crossings and two obtuse angle crossings |
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D.
two pairs of points, six acute angle crossings and four obtuse angle crossings. |