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Traverses
Fieldwork In Traversing
Control By Traversing
Angular Closure
Linear Closure
Adjustment Of Traverses
Function Of Traverses
Missing Data
Bearing And Distance Of
One Line
Bearing Of One Line,
Distance Of Another
Lengths Or Bearings Of
Two Lines
Fieldwork In Traversing
The easiest way of visualizing the traversing process is to consider it to be the formation of a polygon on the ground using standard survey procedures. If the traverse is being measured using a theodolite (which is the normal case) then angles are observed to survey stations on both faces for a given number of rounds, and booked and reduced accordingly. The stations being observed are premarked and targetted with range poles or traversing targets, or simply by a plumb-bob string for the duration of the angle measurement. If bearings are being observed with a magnetic compass then care must be taken to reduce the effect of variation in declination over the period of the survey, and especially to avoid the effects of local attraction. This is done by avoiding nearby metallic objects, and by observing both forward and reverse bearings for each traverse line.
Whatever method is used for the measurement of distance then all appropriate corrections should be made, and the distances reduced to horizontal.