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0 votes	3386 views	1 answer	The correction to be applied to each 30 metre chain length along θ° slope, is updated 9 years ago by Civil Engineer
0 votes	952 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 9 years ago by Civil Engineer
0 votes	1199 views	1 answer	The constant vertical distance between two adjacent contours, is called updated 9 years ago by Civil Engineer
0 votes	1283 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 9 years ago by Civil Engineer
0 votes	773 views	1 answer	Resolving power of a telescope depends on updated 9 years ago by Civil Engineer
0 votes	819 views	1 answer	The theodolites used for making tacheometric observations by optical wedge system, are updated 9 years ago by Civil Engineer
0 votes	1677 views	1 answer	Straight, parallel and widely spaced contours represent updated 9 years ago by Civil Engineer
0 votes	905 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 9 years ago by Civil Engineer
0 votes	764 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 9 years ago by Civil Engineer
0 votes	759 views	1 answer	A lens or combination of lenses in which the following defect is completely eliminated is called aplanatic updated 9 years ago by Civil Engineer