In this section we provide information on procedures used in making level and traverse computations. We also discuss methods of differential leveling, including steps to follow in checking level notes.
Coverage includes information on adjusting intermediate bench marks as well as a level net.
In addition, we describe several methods of plotting horizontal control that may be used in determining the bearing of the traverses. These methods include plotting angles by protractor and scale, plotting angles from tangents, and plotting by coordinates. We point out some of the common types of mistakes that the EA may encounter in making or checking computations, and we provide some information about locating mistakes. Before computations are started, a close check on the field data for completeness and accuracy is required. Differential-level circuit and notes for differential leveling.