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3. Elevation of BM 10 is 42.852m. The stadia interval factor is 100.00 and C=0.
Determine elevation for the turning points and BM 11. Record notes and elevations
in a proper note form.

Back Fore
sight sight

Statio
n Stadia Zenith Rod,m Stadia Zenith Rod,m
interval, interval,
m angle m angle
0
BM10 1.031 95 30’ 2.41
0
0
TP1 2.041 86 30’ 2.06 1.506 81 50’ 1.00
0
0
TP2 2.721 96 30’ 1.45 1.432 94 10’ 2.50
0
0
TP3 2.012 100 00’ 2.04 0.901 82 30’ 0.24
0
BM11 1.321 92 40’ 2.40

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
0
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.

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