Complete the following levelling booking and calculate the reduced levels of all stations by rise and fall method. Apply all arithmetic checks and assess whether this survey fulfill the accuracy standard for normal engineering works, i.e. +5n. Calculate the correction and the corrected reduced levels of all stations. (25 marks) BS 1.361 0.855 2.855 From To A B C D IS 2.844 Horizontal Circle Reading: From To A B C 1.362 2.111 D Vertical Circle Reading: Face Left (F.L.) 28 31' 28" 91 57' 02" 255 08' 32" The following horizontal and vertical circle readings are recorded during a field observation from station A to B, C, and D respectively. Enter and reduce the horizontal and vertical angles in proper booking format. (10 marks) FS Face Left (F.L.) 92 31' 26" 91 57' 03" 88 22' 43" 3.015 1.711 2.015 Face Right (F.R.) 208 31' 18" 271 56' 52" 75 08' 26" RL 20.842 Face Right (F.R.) 267 28' 40" 268 03' 05" 271 37' 23" 19.164 Remarks TBM 'A' 1 2 (CP) 3 (CP) 4 5 TBM 'B'