Propped Cantilever — Indeterminate Classifier
Fixed-wall cantilever with an added roller prop under a UDL; introduces statically indeterminate classification (DSI = 1) — the engine correctly refuses to solve and explains why compatibility is required.
Category: beam · Difficulty: Intermediate
Solution
This structure is statically indeterminate — the determinate solver does not report unique support reactions for it.
All reaction values are computed by the StatIQ structural engine, not generated text. Signs follow the solver's convention: a positive Ry acts upward, a negative Ry downward; a positive M is counter-clockwise.