Civil Engineering :: Surveying
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Staff readings on pegs x and y from X station are 1.755 m and 2.850 m, and from station Y on staff head at Y and X are 0.655 m and 1.560 m. If reduced level of X is 105.5 m, the reduced level of Y is
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The constant vertical distance between two adjacent contours, is called
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The reduced level of a floor is 99.995 m, the staff reading on the floor is 1.505 m. If the inverted staff reading against the roof is 1.795 m, the floor level below the slab, is
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The correction to be applied to each 30 metre chain length along θ° slope, is
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If F is the pull applied at the ends of tape in kg, l is the length of tape between end marks in metres, w is the weight of the tape in kg per metre run, then sag correction
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Under ordinary conditions, the precision of a theodolite traverse is affected by
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Pick up the incorrect statement from the following :
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The bearing of lines OA and OB are 16° 10' and 332° 18', the value of the included angle BOA is
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The properties of autogenous curve for automobiles are given by
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A.
while measuring a distance with a tape of length 100.005 m, the distance to be increasing by 0.005 m for each tape length |
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B.
an increase in temperature causes a tape to increase in length and the measured distance is too large |
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C.
the straight distance between end points of a suspended tape is reduced by an amount called the sag correction |
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D.
a 100 m tape of cross section 10 mm x 0.25 mm stretches about 10 mm under 5 kg pull. |