Rail Engineering Calculators

Equilibrium speed, cant deficiency & excess, rate of change of cant.

Versine, chord and radius relationships. Degree of curvature.

Rigid-vehicle curve throw and platform step-gap geometry for one nominated door.

Stage PI geometry on map and check tangent residuals with circular/transition curves.

Click three points on aerial imagery to fit an arc and compute radius.

In-service stress state from rail temperature and neutral temperature.

Plan leg pull and rail cut values to install rail at design stress-free temperature.

Cross-section area and volume per metre. Scaled cross-section drawing.

Running time split by acceleration, cruise and deceleration with speed profile chart.

Compare line-speed baseline against station stop or speed restriction time impacts.

Convert radius between metres, feet and chains. Degree of curvature (arc and chord definitions).

Convert gradient between 1 in x, percent, permil, angle and rise over run.