Superelevation and widening
How the templates change on the curves of the horizontal alignment. Roads: superelevation e = V² / 225 R up to the maximum, IRC extra widening, run-in along the transitions (or 2/3 before the curve without one). Railways: equilibrium cant capped at the maximum, about the inner rail, formation widening.
Each curve's values are worked out from its speed or can be typed in the table. The diagram shows the superelevation along the chainage.
Only the template elements marked Superelevate turn and those marked Widen get wider; the templates themselves are not changed.
Commands
CXCURVESSuperelevation and widening on curves…
How the templates change on the curves of the alignment: superelevation and IRC extra widening for roads, cant and formation widening for railways – per curve worked out from the speed or typed, with the superelevation diagram. The marked template elements turn and widen when the templates are applied.
CXHALIGNHorizontal alignment and plan…
IPs with spiral–circular–spiral curves, IRC radius and transition checks, curve table and Excel curve report, plan with chainage ticks.