Subject: engineering surveying (c) To determine the elevation of station A, the following observation were taken, the rod heldvertically. The instrument fitted with Anallatic lens and value of constant was 100.Vertical angleStaff Reading1.332 1.896 2.460RemarksRL of BM = 158.205 mInst. StationHeight of instrument1.440Staff StationB.M- 5°40"B1.440CP+8° 200.780 1.263 1.746A1.380CP-6° 241.158 1.6172.076

Consider the elevation diagram of instrument stations and staff stations as shown below. Anallatic…

(c) To determine the elevation of station A, the following observation were taken, the rod held vertically. The instrument fitted with Anallatic lens and value of constant was 100. Inst. Station Height of instrument Staff Station BM Vertical angle - 5º40° Remarks RL of BM = 158.205 m Staff Reading 1.440 1.332 1.896 2.460 B 1.440 СР +8° 20° 0.780 1.263 1.746 A 1.380 CP -6° 24 1.158 1.617 2.076