Civil Engineering :: Surveying
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The slope correction for a 3° slope for a length of 100 m, is
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In horizontal angles, the error due to imperfect levelling of the plate bubble is
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Pick up the correct statement from the following :
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Pick up the correct statement from the following :
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The distances AC and BC are measured from two fixed points A and B whose distance AB is known. The point C is plotted by intersection. This method is generally adopted in
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In a precision traverse, included angles are measured by setting the vernier
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If Δ is the angle of deflection of a simple curve of radius R, the length of the curve is :
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Pick up the correct statement from the following :
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If the length of a transition curve to be introduced between a straight and a circular curve of radius 500 m is 90 m, the maximum perpendicular offset for the transition curve, is
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The magnetic bearing of a line is 32° and the magnetic declination is 10° 15' W. The true bearing is
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A.
to locate a gross error in bearing that may exist in controlled theodolite traverse, we may plot the traverse from each end. The traverse station having the same coordinates by each route is the one where the error lies |
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B.
to locate a gross error in bearing, in a controlled traverse, we plot the traverse and the station through which perpendicular to sector of the closing line passes is the station at which the error was made |
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C.
to locate a gross error due to taping in a controlled traverse, we plot the traverse to a convenient scale. The bearing of the closing error will be approximately the same as that of the leg in which the gross error consists |
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D.
all the above. |
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A.
The horizontal angle between magnetic meridian and true meridian at a place is called magnetic declination or variance of the compass |
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B.
the imaginary lines which pass through points at which the magnetic declinations are equal at a given time are called isogonic lines |
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C.
the isogonic lines through places at which the declination is zero are termed agonic lines |
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D.
all the above. |
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A.
the framework which consists of a series of connected lines, the lengths and directions of which are found from measurements, is called a traverse. |
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B.
the system of a series of lines which forms a circuit which ends at the starting point, is called a closed traverse |
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C.
the traverse that starts from a point already fixed in some survey system and ends on another such point, is called a controlled traverse |
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D.
the traverse that is not controlled is called a fly traverse |
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E.
all the above. |