Bridge Automation's Online Apps are free calculators for bridge and structural engineers. They run in your browser, with nothing to install. The first time you open them, you complete a quick captcha and accept the Use Agreement.
Moment-curvature (M-φ) analysis with confined and unconfined concrete, and P-M interaction diagrams, for round reinforced concrete columns.
Area, centroid, moments of inertia and distances to the extreme fibers for circles, rectangles, I-shapes, box girders and arbitrary shapes.
Bar dimensions, ACI standard hooks, stirrups and ties (including seismic), and AASHTO LRFD tension development length.
Grade 270 strand and tendon properties.
LRFD moment capacity of reinforced concrete rectangular beams and prestressed T-beams.
Horizontal and vertical curve calculations. Android apps are also available on Google Play: Horiz Curve and Vert Curve 2.
Engineering calculations and equations with units. Math Solver Pro, with many new features, is coming soon.
Everything you like about the free Math Solver, but with many new features.
Column moment-curvature and P-M analysis with bundled-bar support, and many new features.
Each app has its own documentation and release history. Follow the blog for release news, and post questions and bug reports in the forum.