Complete the following levelling booking and calculate the reduced levels of all stations by rise and...

 

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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. +5√n. 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' 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. +5√n. 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'

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To calculate the reduced levels of all stations and assess the accuracy standard we will follow the ... View the full answer