Consulting Structural
Engineers
Steel Beam Web Hole Opening
Structural calculations for web openings and strengthening
We provide structural calculation checks and strengthening design for large service holes through steel beams to meet Building Regulations (calculations to BS5950 or Eurocode 3).
Our Structural Engineers will check your beam based on the specific beam, loading and hole requirements of your project.
Order online for our express service, or contact us for a quote.
Structural calculations for web openings and strengthening
We provide structural calculation checks and strengthening design for large service holes through steel beams to meet Building Regulations (calculations to BS5950 or Eurocode 3).
Our Structural Engineers will check your beam based on the specific beam, loading and hole requirements of your project.
Order online for our express service or contact us for a quote.
Order Online | Fast turnaround | £195+VAT
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Order Online | Fast Turnaround | £195+VAT
Holes through steel beams
Holes through steel beams, or 'web openings' are often required to allow larger services to pass through, such as soil pipes, air conditioning ductwork etc.
Steel beam arrangements in loft conversions often create challenges when routing shower waste or soil pipes and creating a hole through a steel beam can provide a solution.
Allowable hole size
Reasonably large holes can be made through the web (the vertical stem) of a steel beam before reinforcement is required, depending on the beam load. Calculation should always be carried out to confirm adequacy of the arrangement for the applied loading - Building Control will usually request justifying calculations.
See the diagram below for recommended maximum hole sizes, positioning and spacing.
Round web opening
Rectangular strengthened web opening
Web Openings - Recommended Geometry limits: (based on SCI P355)
