Services involved:
Structural Calculations for Cranked Beams
We provide professional Structural Calculations for Cranked Beams for homeowners, builders, and developers across the UK. Our calculations are prepared in accordance with UK Building Regulations and Eurocode 3, ensuring full compliance for Building Control approval.
Cranked beams require specialist engineering design due to the additional forces created at the angled connection. We ensure your steelwork is safe, efficient, and ready for construction.
Our Cranked Beam Design Service
We provide a complete structural design package, including:
- Steel beam sizing and selection
- Cranked connection design
- Weld design and checks
- Plate and fabrication detailing
- Web stiffener design (if required)
- Load calculations and analysis
- Building Control submission drawings
Our drawings and calculations are suitable for immediate submission to Building Control and steel fabricators.
When You Need Structural Calculations for a Cranked Beam
You will need engineering calculations if:
- A steel beam changes direction within the structure
- Loft conversions require stepped steelwork
- Floor levels are not aligned
- Architectural design prevents a straight beam
- Load transfer requires an angled connection
Building Control will always require calculations before approving installation.
Why Cranked Beams Require Engineering Design
Cranked beams are more complex than standard steel beams because the change in direction introduces additional forces, including:
- Tension forces in the connection
- Compression forces through the steelwork
- High shear at the crank joint
- Stress concentration at welds and plates
Without proper design, these forces can lead to structural failure at the connection.
Web Stiffeners and Connection Design
Where required, we design web stiffeners to:
- Strengthen the beam web at the crank
- Prevent local buckling
- Improve load transfer
- Reduce stress on welds
We also design all welds and plates to ensure the connection performs safely under load.
UK Building Regulations Compliance
All designs are carried out in accordance with:
- Approved Document A (Structure)
- BS EN 1990 (Basis of Design)
- BS EN 1991 (Loading on Structures)
- BS EN 1993 (Eurocode 3 – Steel Design)
This ensures full compliance with UK Building Control requirements.
Who We Work With
We regularly provide Structural Calculations for Cranked Beams for:
- Homeowners
- Builders and contractors
- Architects
- Developers
- Loft conversion specialists