Traverse Computation, step by step
Close the angles first, then close the coordinates.
- Check angular closureInterior angles of a closed traverse sum to (n − 2) × 180°.
- Adjust the anglesSpread the angular misclosure equally between the stations.
- Carry the bearingsWork the bearing forward through each adjusted angle.
- Latitudes and departuresΔN = L cos θ and ΔE = L sin θ for every leg in turn.
- Check linear closureMisclosure divided by total length gives the accuracy ratio.
- Adjust the coordinatesBowditch spreads the error in proportion to leg length.
Educational reference. Permitted misclosure is set by the survey specification for the class of work.
Questions about the Traverse Computation poster
- What’s on the Traverse Computation poster?
- 6 numbered steps. Close the angles first, then close the coordinates. Check angular closure — Interior angles of a closed traverse sum to (n − 2) × 180°.; Adjust the angles — Spread the angular misclosure equally between the stations.; Carry the bearings — Work the bearing forward through each adjusted angle.; Latitudes and departures — ΔN = L cos θ and ΔE = L sin θ for every leg in turn.; Check linear closure — Misclosure divided by total length gives the accuracy ratio.; Adjust the coordinates — Bowditch spreads the error in proportion to leg length.. Educational reference. Permitted misclosure is set by the survey specification for the class of work.
- Who is the Traverse Computation poster for?
- Traverse Computation belongs to the Civil Engineering section rather than to a school year, because engineering is not something one grade owns. Anyone learning surveying can pin it up — a beginner, a student mid-course, or someone revising years later.
- When should you use the Traverse Computation poster?
- Establishing site control, and proving it before anything is set out. A wall chart earns its place by being glanceable from where the work is happening, so Traverse Computation belongs on the wall where that engineering work actually happens, within glancing distance, rather than filed away.
- What other posters go with Traverse Computation?
- Areas & Volumes, Bearings and Contours sit alongside Traverse Computation in the Civil Engineering section. Printed together they make a wall rather than a single sheet, which is how a reference set actually gets used.Areas & VolumesBearingsContours
- Is the Traverse Computation poster free to download and print?
- Yes. Traverse Computation downloads as a free PDF with no account, no email and no watermark, like everything else in the Civil Engineering section. Print as many copies as you like for a home, a classroom, a library or a tutoring group; reselling the file is the only thing the licence rules out.Read the licence
- What size does the Traverse Computation poster print at?
- Traverse Computation is a vector PDF laid out for US Letter, and prints on A4 with Fit to page — the same file, no separate download. Because every mark on it is drawn rather than photographed, it stays sharp enlarged to A3, A2 or A1 at a copy shop. Colour carries emphasis only, so a greyscale print of Traverse Computation loses nothing.Printing guide
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