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Jasmine Wonders
Jasmine WondersRoad Curves · Quick Reference
Circular Curve Formula Sheet
1 document · 3 pages
1
document
3
pages
Foundation
level

Quick Reference · Road Curves & Alignment

Circular Curve Formula Sheet

Every simple-curve element, with the derivations that make them stick.

$12
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  • Read on phone, tablet or PC
  • Downloadable PDF files

About this course

Stop memorising and start understanding. This three-page reference defines every element of a simple horizontal curve — radius, tangent length, intersection angle, middle ordinate, external distance and degree of curvature — and derives the key formulas from first principles with clean right-triangle sketches.

  • All curve elements defined on a single labelled diagram
  • Derivations of T = R tan(Δ/2) and M = R(1 − cos Δ/2)
  • Ideal as a desk reference or last-minute revision sheet

Syllabus

1 document · 3 pages · English

  1. 01

    Circular Curve Formula Sheet

    PDF · 3 pages
    • Curve elements: R, T, Δ, M, E, PC, PT, PI and Dc
    • Derivation of the tangent length T = R tan(Δ/2)
    • Derivation of the middle ordinate M = R(1 − cos Δ/2)
    • External distance and degree of curvature

Format & delivery

  • PDF documents, viewable in-browser
  • Private reader link emailed instantly
  • Link valid for 12 months, re-issued on request
  • Personal, single-user licence

Source material credits

  • Surveying department lecture notes

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