Answer Happy

Q4 (a) Tacheometry survey using stadia technique was performed from station O. the instrumentation height and reduced level are 1.500 m and 12.635 m respectively. Table Q4(a) shows all the observation data. Based on the data, determine: (i) Horizontal distance for each observation point when the constant values (K) = 100 and (c) = 0. (4 marks) Reduced level for every observation point. (6 marks) (b) Table Q4(b) shows the data from tacheometry survey using total station. Calculate; (i) Reduced level for points A, B and C (ii) (11) Horizontal distance of AC (6 marks) (4 marks)
From Stn. 1 Vertical Angle 16° 20' 40" 10° 32' 40" To Stn. 2 Reduce Level Stn. 8.940 TABLE Q4(a) Upper 2.12 3.05 Instrument Height 1.543 Stadia Middle 1.435 1.837 TABLE Q4(b) Bearing 00° 00' 72° 05′ 102° 00′ 102° 00′ Lower 0.75 0.625 Notes 21.333 18.490 28.897 To A To B Horizontal Prism Different Distance Height Height 1.350 0.250 1.350 -0.347 1.350 0.634 Notes A B с