Download - DRAFT 234 – Measuring Level
Transcript
![Page 1: DRAFT 234 – Measuring Level](https://reader036.vdocument.in/reader036/viewer/2022082611/56812d1a550346895d921066/html5/thumbnails/1.jpg)
DRAFT 234 – Measuring Level
![Page 2: DRAFT 234 – Measuring Level](https://reader036.vdocument.in/reader036/viewer/2022082611/56812d1a550346895d921066/html5/thumbnails/2.jpg)
Abbreviations
• BM – Benchmark• MON – Monument• FS – Foresight• BS – Backsight• TP – Turning Point• Elev – Elevation• HI – Height of Instrument
![Page 3: DRAFT 234 – Measuring Level](https://reader036.vdocument.in/reader036/viewer/2022082611/56812d1a550346895d921066/html5/thumbnails/3.jpg)
Fig. 5-6BM – BenchmarkMON – MonumentFS – ForesightBS – BacksightTP – Turning PointElev – ElevationHI – Height of Instrument
Finding an elevation with a level and rod
![Page 4: DRAFT 234 – Measuring Level](https://reader036.vdocument.in/reader036/viewer/2022082611/56812d1a550346895d921066/html5/thumbnails/4.jpg)
HI = ht of instrument. Equations p. 112
![Page 5: DRAFT 234 – Measuring Level](https://reader036.vdocument.in/reader036/viewer/2022082611/56812d1a550346895d921066/html5/thumbnails/5.jpg)
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
![Page 6: DRAFT 234 – Measuring Level](https://reader036.vdocument.in/reader036/viewer/2022082611/56812d1a550346895d921066/html5/thumbnails/6.jpg)
Reading a level rod.
![Page 7: DRAFT 234 – Measuring Level](https://reader036.vdocument.in/reader036/viewer/2022082611/56812d1a550346895d921066/html5/thumbnails/7.jpg)
Exercise 5-2