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0 votes	3593 views	1 answer	The correction to be applied to each 30 metre chain length along θ° slope, is updated 10 years ago by Civil Engineer
0 votes	1004 views	0 answers	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 updated 10 years ago by Civil Engineer
0 votes	1304 views	1 answer	The constant vertical distance between two adjacent contours, is called updated 10 years ago by Civil Engineer
0 votes	1402 views	1 answer	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 updated 10 years ago by Civil Engineer
0 votes	876 views	1 answer	Resolving power of a telescope depends on updated 10 years ago by Civil Engineer
0 votes	916 views	1 answer	The theodolites used for making tacheometric observations by optical wedge system, are updated 10 years ago by Civil Engineer
0 votes	1786 views	1 answer	Straight, parallel and widely spaced contours represent updated 10 years ago by Civil Engineer
0 votes	1022 views	2 answers	In precision theodolite traverse if included angles are read twice and the mean reading accepted using both verniers having a least count of 30". Assuming the instrument to be in perfect adjustment, linear measurements correct to 6 mm per 30 metre tape duly corrected for temperature, slope and sag, the angular error of closure not to exceed (where n is the number of traverse legs) updated 10 years ago by Civil Engineer
0 votes	886 views	1 answer	While setting a plane table at a station it was found that the error in centering was 30 cm away from the ray of length 40 m drawn from the station. If the scale of the plan is 1 cm = 2 cm, the displacement of the end of the ray in plan from the true position will be updated 10 years ago by Civil Engineer
0 votes	863 views	1 answer	A lens or combination of lenses in which the following defect is completely eliminated is called aplanatic updated 10 years ago by Civil Engineer