Spreadsheets for Structural Engineers
This is a collection of free, web-based structural engineering calculators. No login, no artificial limits, full results every time. Built and maintained by a practicing structural engineer, not a marketing team. We put real effort into making them accurate and easy to use. May they boost your productivity!
Some of these tools — beam analysis, column design, bolt group analysis, and prestress losses — are also available as Excel spreadsheets, with more options and professional reporting.
Performs axial force–moment (P-M) interaction and moment–curvature analyses for members of circular and rectangular cross-section. Complies with AASHTO LRFD. Uses the Mander model for the confined and unconfined concrete stress–strain relations.
Calculates shear resistance of an eccentrically loaded bolt group using the elastic and instantaneous center of rotation methods per AISC. Supports standard and irregular bolt layouts.
Computes force and deformation influence lines at any section of a continuous beam. Computes a force envelope due to combined truck and lane moving loads.
Performs biaxial analysis of general-shaped base plates under combined axial load, biaxial moment, shear, and torsion. Supports rectangular, circular, polygon, and custom plate shapes with openings.
Performs dynamic analysis of beams, including eigenvalue and time-history analysis of a moving vehicle load. Reports natural frequencies and mode shapes along with static and dynamic force effects, and dynamic amplification factors. Supports multiple spans, variable linear and concentrated loads, and custom vehicle configurations.
Interactive analysis of a beam on a Winkler elastic foundation with arbitrary point and linear distributed loads. Performs non-linear analysis when a compression-only subgrade option is selected.
A spin-off of the popular spreadsheet PSLoss. Build a tendon profile from parabolic and straight segments and calculate elongations and stresses along the tendon. Handles stressing at one or both ends, using AASHTO or Eurocode equations.
Old-fashioned flexural analysis of longer-span bridge decks under wheel loads, using the classic 1965 Homberg & Ropers bending moment influence surfaces. Simple, fast, and still accurate.
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