Description

In this lab, students learn the field and office procedures of the leveling loop including:

Definition and application of the leveling loops

Field procedure

Field data tabulation

Calculations and adjustment

Adjustment of a sample leveling loop

Methodology/Procedure

The field procedure and office calculations for this lab are thoroughly explained in the videos posted under this module on D2L.

Field Data

The followings are the field data (in ft.) to be used in this lab. Elevation of BM1: 452.38 ft.

First Setup:

BS to BM1: 4.62

FS to TP1: 3.48

Second Setup:

BS to TP1: 5.42

FS to TP2: 6.28

Third Setup:

BS to TP2: 4.56

FS to TP3: 1.75

Fourth Setup:

BS to TP3: 2.95

FS to TP4: 6.36

Fifth Setup:

BS to TP4: 1.15

FS to TP5: 1.11

Sixth Setup:

BS to TP5: 3.86

FS to BM1: 3.49

Deliverables

A word or PDF file containing:

Correct tabulation of field data

Calculation of

Misclosure error

Height of Instrument (HI)

Elevation of all turning points

Adjustment

Total correction

Correction per setup

Applying corrections to elevations

Adjusted elevation of all points