Structural Steel Data Hub
Comprehensive reference tools for UK structural steel design, calculations, and component selection, built on SteelSpec, our structured product data library. All data aligned with BS EN 1993-1-1 and industry best practice.
Reference data
Section Properties
Hot-rolled UB, UC, PFC, angle, hollow and tee sections with full geometric and mechanical properties.
Material Grades
S275, S355, S460 and weathering grades. Yield and tensile strength by thickness, weldability, old BS equivalents, and US grade cross-reference.
Structural Bolts
Bolt dimensions, shear and tension capacities for grades 4.6, 8.8 and 10.9 per BS EN 1993-1-8.
Purlin Span Tables
Cold-formed Z and C purlin sections, load tables, and span data from UK manufacturers.
Z Purlin Comparison
Compare Z purlin sections from Metsec, Albion, BW Industries, Steadmans and more side by side.
Design guides
Portal Frame Guide
Portal frame design principles, typical spans, member sizing, haunch details, and construction guidance.
Stiffener Plates
Stiffener plate types, sizing rules, and section property lookup for UB sections.
End Plate Connections
Flush and extended end plate connection types, standard configurations, and moment capacity guidance.
Holding Down Bolts
HD bolt types, standard sizes, embedment depths, and base plate bolt patterns for column bases.
Base Plate Reference
Standard base plate configurations, weight calculator, and grout pocket guidance per BS EN 1993-1-8.
Connection Design Rules
Bolt spacings, weld sizes, block shear and plate bearing resistance to Eurocode 3-1-8. Quick lookup tool plus formulas, tables and worked examples.
Calculators & tools
Steel Weight Calculator
Calculate weights for sections, plates, bars and hollow sections with material list export.
Portal Frame Calculator
Estimate steel weights, bay sizes, and material quantities for portal frame buildings.
Embodied Carbon Calculator
Estimate kgCO2e for any UK steel project. Compare production routes (UK average, BF-BOF, EAF scrap, Xcarb, reused) and life-cycle modules. Sourced from SCI P449.
For developers & AI builders
SteelSpec API
REST API for UK structural steel data. Free tier for engineers, paid tiers for AI tooling and software vendors. Currently in private beta โ request early access.
MCP Server (AI Agents)
Model Context Protocol server with 16 tools. Register with Claude Desktop or the Anthropic Agent SDK to give your agent direct access to UK steel data.