Structural design tools for practising engineers
Choose a structure, enter your values with their units, and get the full calculation trail. Each step cites the clause or equation it comes from, and every tool is checked against worked examples and on real projects before release.
Sample calculation · Timber
Beam in biaxial bending
Design codeSIA 265:2021
PassBiaxial bending
η = 0.76≤ 1.0076 % of the capacity used
σm,y/fm,y + σm,z/fm,z ≤ 1§ 4.2.3.1 (14)
+ 9 more steps in the module: section moduli, height factors, lateral torsional buckling.
Choose the kind of structure. You can switch at any time from the menu.
Online today: Timber (26 modules): Tension, Compression, Simple bending, Biaxial bending, Shear, Torsion, Tension and biaxial bending, Compression and biaxial bending, Bearing, Serviceability, Reinforcement, Shear wall, CLT · Floor. More modules are in preparation and appear here as soon as they are published.
Loading, analysis and design checks for buildings and everyday structures.
Design and analysis checks for pedestrian, road and rail bridges, starting from the bridge type.
Bridge type
Then choose the geometry (straight, curved or skew), the task and the material, down to the component you need to check.
Open BridgesThe same three layers in every tool, so you can check our work the way you would check a colleague’s.
Every input shows its unit and what it means, with a figure wherever one makes the value clearer.
Results come with every intermediate step, each beside the clause, equation or table it is based on.
Each tool is checked clause by clause against the norm, and against independent calculations used on real projects.
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The tools come out of day-to-day work on buildings and bridges, and are used on real projects before they appear here.