P-Way Horizontal Calcs (1.6m)
Productivity

P-Way Horizontal Calcs (1.6m)

mark mcmahon · released 6 Aug 2026 · Open in App Store ↗

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United Arab Emirates<1%0AED 19.99 $5.45
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Description

Horizontal alignment design calculator for 1.6m / Irish-broad-gauge (1600mm / 5’3”) permanent way.

Built for Iarnród Éireann route engineers, technical officers, and P-Way designers who need fast, reliable curve and cant calculations without leaving the site.

Equilibrium cant (Ce) — V² × 13.0389 / R (kph) or V² × 33.77 / R (mph)

Cant deficiency (Cd) — passenger comfort vs applied cant

Combined cant + deficiency (E+D) — checked against the line’s regulatory limit

Applied cant (Ca) — 2/3 × Ce rounded to the nearest 5 mm

Reverse-mode and compound curves both supported (F+R and F-F only)

10 m intervals by default, per-segment override where geometry demands it

Hollow / hump profile auto-detection on vertical curves

Worked example regression (V = 40 mph, R = 394.844 / 421.4 / 396.928 / 645 m)

Designed to mirror the approved 1.435m gauge SKU; same workflow, same screen layout, same input rules — just the 1.6m constants.

Note: there is no published Iarnród Éireann horizontal-alignment design standard. The formulas in this app are the canonical reference for the 1.6m SKU. Always verify on-site conditions against current line specifications.