Civil Engineering :: Surveying
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. If + 0.8% grade meets - 0.7% grade and the rate of change of grade for 30 m distance is 0.05, the length of the vertical curve will be
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The included angles of a theodolite traverse, are generally measured
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Location of contour gradient for a high way is best set out from
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If h1 and h2 are the differences in level between ground and the formation levels, m is the slope of the sloping sides. D is the distance between the cross sections then, prismoidal correction for a level section is
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In a telescope the object glass of focal length 14 cm, is located at 20 cm from the diaphragm. The focussing lens is midway between them when a staff 16.50 m away is focussed. The focal length of the focussing lens, is
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The line normal to the plumb line is known as
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The angle of intersection of a curve is the angle between
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Planimeter is used for measuring
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In a perfect prismatic compass
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The defect of a lens whereby rays of white light proceeding from a point get dispersed into their components and conveyed to various foci, forming a blurred and coloured image is known as