C192055 Pages: 3

At what stations do you suspect local attraction? Find the correct bearings of the
lines and also compute the included angle.

PART 8
Answer any two full questions, each carries 15 marks
State Simpson’s rule and Trapezoidal rule for computation of area. A series of 7.5
offsets were taken at 3m intervals in the following order from a chain line to a
curved boundary 2.16, 1.53, 1.80, 1.98, 1.80, 1.59, 1.80, 2.52, 2.43, 2.40, 2.58,
2.70, 2.91, and 3.06 meters. Find the area between the chain line, curved

boundary and the end offsets by Simpson’s rule and trapezoidal rule.

Describe the methods of computation of volume by i) Average end formula and 7.5
ii) Prismoidal formula

What is transit theodolite and what are the temporary adjustments in Theodolite? 75
The altitudes of two proposed stations A and B, 80 km apart are respectively 75
225m and 550 m. The intervening obstructions situated at C, 40 km from A has
an elevation of 285m. Ascertain if A and B are intervisible. And if necessary
find how much B should be raised so that the line of sight must nowhere be less

than 3m above the surface of the ground.

Explain the terms; 75
i) Satellite stations ii) reduction to centre ii) Opaque Signals

Determine the volume of the reservoir enclosed by the contour lines from the 7.5

data given below using both prismoidal and trapezoidal formula.

Contour level (m) Area enclosed by _ the

contour line (m7)

100
105
110
115
120
125
130

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