Surveying & Geomatics

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Traverse Closure Error

Straight-line gap between the start and computed end of a closed traverse.

Formula

E = \sqrt{(\sum Lat)^2 + (\sum Dep)^2}

Variables

EClosure error

\sum LatSum of latitudes

\sum DepSum of departures

Example

ΣLat=0.3, ΣDep=0.4: E = 0.5 m

Did You Know?

Surveyors distribute this small error around the traverse using the compass (Bowditch) rule.

surveying closure error

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