RSJ Beam Calculators
Professional interactive tools for calculating RSJ beam sizes, load capacities, and project costs. Free calculators for structural engineers, builders, and DIY enthusiasts.
Beam Size Calculator
Select the appropriate RSJ beam size based on your span and load requirements
RSJ Beam Size Calculator
Calculate the appropriate RSJ beam size for your project based on span length and load requirements.
Load Capacity Calculator
Calculate the maximum load capacity for your selected RSJ beam size
Load Bearing Capacity Calculator
Calculate if an RSJ beam can safely support your loads and determine the utilization percentage.
Cost Calculator
Estimate the total cost of your RSJ beam project including materials and installation
RSJ Cost Calculator 2026
Estimate the total cost of RSJ beams including materials, delivery, and typical project costs for UK and Poland.
Essential Site Equipment
Professional tools recommended for structural work
Professional Engineering Required
These calculators provide estimates only. All structural calculations must be verified by a chartered structural engineer (CEng, MIStructE). Actual structural design must account for deflection limits, lateral stability, local effects, fire protection, and building code requirements.
Never proceed with structural work without:
- Full structural engineer calculations and drawings
- Building Control approval
- Professional indemnity insurance coverage
- Qualified installation by experienced contractors