DRAFT 234 – Measuring Level
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DRAFT 234 – Measuring Level
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DRAFT 234 – Measuring Level. Abbreviations. BM – Benchmark MON – Monument FS – Foresight BS – Backsight TP – Turning Point Elev – Elevation HI – Height of Instrument. BM – Benchmark MON – Monument FS – Foresight BS – Backsight TP – Turning Point Elev – Elevation - PowerPoint PPT Presentation
Transcript of DRAFT 234 – Measuring Level
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