Frame Calculator

Analyse 2D frames with the direct stiffness method: draw members, assign supports and loads, and read reactions, displacements and member force diagrams. Linear-elastic analysis only — no capacity or design checks, no P-Δ, no buckling.

• Fixed, pinned, roller (including inclined), spring supports and support settlements.
• Member end releases (pins), point / uniform / trapezoidal / moment loads on members, nodal loads.
• Per-member axial, shear, bending moment and deflection diagrams, plus the deflected shape.