What it does
3-19). Add any number of pin / roller / fixed supports and point loads, drag supports and loads along the free-body diagram, and resize the cross-section by dragging. Internal forces come from a direct-stiffness Euler-Bernoulli solver, so continuous (multi-span) beams with hogging over interior/fixed supports are handled.
Review bending moment, shear, and service deflection diagrams plotted against dashed capacity limits (M_r, V_r, L/limit) with a fail highlight when a demand crosses its line, plus a Bar Detailing tab that derives an indicative bar schedule (bottom/top bar marks and lengths) from the factored moment envelope. 21, theta = 35 deg, capped at V_r,max), and deflection an effective-inertia estimate. Copy/CSV/JSON/Print export.