Steel Design Tools
Professional steel structure analysis and fire resistance calculations
Steel Fire Temperature
Calculate fire resistance of unprotected steel structures with interactive temperature simulation. Features Am/V ratio calculation, shadow effects, and detailed temperature-time curves.
Two-Sided Hat Profile
Calculate structural capacities and cross-sectional classifications for two-sided hat profiles. Features Eurocode 3 compliance with detailed geometric property calculations.
DIN Rod Torque Calculator
Calculate required torque from force or force from torque for DIN threaded rods. Features detailed step-by-step calculations with thread friction, head friction, and geometric parameters.
Concrete Design Tools
Ultimate Limit State calculations for concrete structural elements
Concrete Slab Design
Ultimate Limit State (ULS) moment resistance calculator for concrete slabs. Calculate MRd with detailed step-by-step mathematical derivations and visual aids.
Concrete Beam Design
Ultimate Limit State (ULS) calculator for concrete beams. Calculate moment and shear capacity with detailed step-by-step derivations.
Concrete Base Plate
Calculate compressive capacity of concrete base plates with detailed step-by-step calculations. Features effective area determination and steel plate spread calculations per EC3-1-8.
Coming Soon
Beam Design
Steel beam calculators
Column Design
Compression member analysis
Load Analysis
Load combination tools
About These Tools
Professional Quality
Built with the same rigor and accuracy standards used in professional engineering practice. All calculations are based on established codes and standards.
Open Source & Free
Completely free to use with no registration required. Source code is available on GitHub for transparency and community contributions.
Interactive Results
Dynamic charts, step-by-step calculations, and exportable results make it easy to understand and document your engineering decisions.
Continuously Updated
Regular updates with new tools, improved accuracy, and user-requested features. Built by structural engineers for the engineering community.