What's New

• Freeze-thaw exposure class (XF1–XF4) — Now selectable on the exposure class picker alongside carbonation and chloride classes.
• Algebraic bending derivation in popups — Bending check popups now render the full symbolic M_Rd derivation when an algebraic solution applies, with a numerical fallback otherwise.
• Force-arrow visualization — New toggle in the section preview shows force arrows for Mx, My, Vx, Vy, and N. Drag arrow labels to pin them where you want.
• Fix Cover — New option in the reinforcement editor that automatically moves bars to the correct cover.

Improvements

• "Steel" navigation label renamed to "Rebar Steel" for clarity.
• Faster startup and improved performance.