Traverse Closure and Adjustment

Formula and source

Per course Lat = dist*cos(azimuth), Dep = dist*sin(azimuth); misclosure components = sum Lat, sum Dep; linear misclosure = sqrt(sumLat^2 + sumDep^2); relative precision = perimeter / misclosure (1:N); Compass (Bowditch) correction per course = -(course_length / perimeter) * (that component).

Traverse latitude/departure, linear misclosure, relative precision, and the Compass (Bowditch) rule adjustment per FM 5-233 Construction Surveying and the standard surveying references, by name; public-domain and first-principles.

Audience

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Posture

Rough Logic answers the math question the working professional asks on the job. The site is a calm, fast, ad-free, account-free, ever-free reference. It does not interpret code. It does not replace the licensed professional. It does not store your inputs. The Authority Having Jurisdiction governs all installations and inspections.