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\SGF 209: Fundamentals of Surveying 1
Tacheometric Surveying
Tutorial Exercise
1, The tacheometric observations in table below were taken along the line of a proposed roadway at
approximately 20m intervals.
D (approx. chainage 60m)
143m
24421 m AOD
[constant m = 100,
Calculate the reduced level and true chainage for each station.
2. In determining the elevation of point A and the distance between two points, A and B, a theodolite
is set up at A and the following data are obtained: Z-92°45',stadia interval = 1.311m, hi=1.28m,
‘and the line of sight at 2.62m on rod. The instrument constant K=100 and C=O. The elevation of B is
38.28m. Compute the distance AB and elevation of point A.
3. Elevation of BM10 is 42,852m. The stadia interval factor is 100.00 and C=0. Determine elevation for
the turning points and BM14, Record notes and elevations in a proper note form.
Back sight Fore sight
Station Stadia Zenith Rod(m) Stadia Zenith Rod (m)
interval angle Interval angle
(m) (m)
BM10 1.031 95°30' 2.41
TP1 2.041 86°30") 2.061.506 81°50’ 1.00
TP2 2721 (96°30 © 1.451.432 94°10" 2.50
P3 2.012 100°00’ 2.04 0.901 82°30’ 0.24
BM11 1.321, 92°40" 2.40
LN
Dept of S86, Bells University of Science & Technology, Ot@ ‘SGF 209: Fundamentals of Surveying 1
4, The elevation of station P is 345.67m. The hi of a transit set up over that station Is 1.23m. When
‘observing a rod held on station Q, the following data are recorded: Vertical angle = -9°45',
lower staid hair = 0.83, center hair = 1.23, upper stadia hair = 1.63. Determine the distance
between P and Q, and elevation of Q.
H=Ke oi? z+Coinz
Dept of $86, Bells University of Science & Technology, Ota |
