Following observations were taken with a transit theodolite fitted with stadia wires. The line of sight was horizontal and the staff was held vertical.

Stadia hair Reading on staff (m)

Top hair 1.646

Middle hair 2.348

Bottom hair 2.780

Other data 0.0

The tacheometer constants K and C are 100 and 0.6 m respectively. The horizontal distance between staff and instrument is _______ m.
114

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Solution

The correct option is A 114
D = KS + C

S = 2.780 - 1.646 = 1.134 m

D = 100 × 1.134 + 0.6

= 114 m

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Stadia hair	Reading on staff (m)
Top hair	1.646
Middle hair	2.348
Bottom hair	2.780
Other data	0.0

The correct option is A 114D = KS + C S = 2.780 - 1.646 = 1.134 m D = 100 × 1.134 + 0.6 = 114 m

The correct option is A 114
D = KS + C

S = 2.780 - 1.646 = 1.134 m

D = 100 × 1.134 + 0.6

= 114 m