Q1.
(a) Discuss the temporary adjustment of Transit Theodolite. How would you measure the horizontal angle by repetition method?
(b)
Determine the gradient from point P' to point Q' from the following observations made with a tacheometer fitted with an anallactic lens. The constant of instrument was 100 and staff was held vertically. Staff readings inst. station
staff station
Bearing
Vertical Angle
σ_{\rmmax} = 0.5 m
P
A
130
10°32'
1.36
1.915
2.470
B
220
5°6′
1.065
1.885
2.705
(c) Two straight lines 'AB' and 'BC' are intersected by a line 'D1D2'. The ∠ B D1D2 and ∠ B D2D1 are 40° 30' and 36° 24' respectively. The radius of first arc is 600 m. and that of second arc is 800 m. If the chainage at point of intersection point 'B' is 8248. 10m. Calculate the chainage of Tangent Points and point's of compound curve.