Beam Calc

Beam Calc is a fast, modern beam analysis app for structural/civil engineers and students. Build your beam with supports, loads, and internal hinges, then instantly view Shear Force (SFD), Bending Moment (BMD), Rotation (θ), and Deflection (v) diagrams—plus influence lines for key quantities. What you can do: Model supports and hinges Pin, Roller, Fixed supports Internal hinges (moment release) with correct discontinuities Apply realistic loads Point loads, Uniformly Distributed Loads (UDL), Concentrated Moments Metric (kN, m, mm) and FPS (kip, ft, in) unit systems Analyze any beam configuration Determinate solver: matrix/segmental method with automatic discontinuity points Indeterminate solver: direct stiffness method (Euler–Bernoulli FE) with Hermite interpolation for θ and v, curvature-based M = EI·κ, and M = 0 enforced at hinges Visualize with clarity SFD, BMD, Rotation (slope), and Deflection diagrams Perfect vertical jumps at load/hinge discontinuities Critical points: automatic max/min detection and display Interactive grid and touch tracer to read exact values at any position Influence lines (IL) Compute IL for reaction, shear, or moment at chosen locations Determinacy-aware sampling for both determinate and indeterminate beams Productivity features Save and load beam configurations for quick reuse Clean Material You interface with dynamic theming Engineering details done right: Consistent sign conventions, including clockwise-positive concentrated moments with correctly oriented BMD spikes Accurate handling of hinges and fixed supports in both determinate and indeterminate analyses Who it’s for: Structural and civil engineers, educators, and students who need quick, reliable beam calculations and diagrams on the go. Note: Results are intended for education and preliminary design. Always verify against project codes, standards, and professional judgment before final use.