DRAFT 234 – Measuring Level

Abbreviations

• BM – Benchmark• MON – Monument• FS – Foresight• BS – Backsight• TP – Turning Point• Elev – Elevation• HI – Height of Instrument

Fig. 5-6BM – BenchmarkMON – MonumentFS – ForesightBS – BacksightTP – Turning PointElev – ElevationHI – Height of Instrument

Finding an elevation with a level and rod

HI = ht of instrument. Equations p. 112

Field Notes From Level Survey

BS FSStation + HI - Elev

BM1 462.653.90 466.55

TP1 10.85 455.701.56 457.26

TP2 2.88 454.3810.00 464.38

TP3 3.25 461.139.72 470.85

BM2 3.8 467.05

Reading a level rod.

Exercise 5-2