Department of Technology

ENG 200 - Surveying

Spring 2004

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Lab 5 - Transit Exercises

Purpose:

This lab will introduce you to the procedures used to turn horizontal angles using a transit or theodolite.  It will also introduce you to traverse boundary calculations, and the use of trigonometry to indirectly determine heights and distances.

Equipment Required:

  • Digital transit or theodolite
  • Tripod
  • 100-foot steel tape (chain)
  • Chaining pins
  • Range pole

Procedure:

A 6-sided traverse is laid out on the mall sidewalks using PK nails marked with pink flagging. You are to locate the corner points, measure all the angles and distances, and perform the necessary calculations to balance the traverse and determine the enclosed area.

  1. Turn the interior, clockwise angle at each corner using one of the instruments with an optical plummet.
  1. Measure the distances between each corner to the nearest 0.01 feet using a steel chain.
  1. Assume that line AF runs due east. Adjust your angles, and determine the latitude and departure of each side. Determine the misclosure and relative error of your work. Your relative error must be less than 1/2000.
  1. Balance the traverse using the compass rule, and determine the area enclosed by the boundary. The calculations for steps 3 and 4 are to be submitted on a separate sheet from your field book.