Volex Labs / Calculations / Steel beam-column design to Eurocode 3.

Steel beam-column design to Eurocode 3.

Enter the section, member length and the combined axial force and moments, and Volex Anvil checks the beam-column: the characteristic compression resistance NRk, the flexural-buckling and lateral-torsional-buckling reduction factors, and the combined utilisation from the EC3 §6.3.3 interaction equations (6.61) and (6.62).

The interaction factors kyy, kyz, kzy, kzz are computed by Annex B (Method 2), so the combined check matches the standard UK approach for columns carrying moment.

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What Volex Anvil checks

Validated against the published example

Beam-column resistances — EC3 §6.3 characteristic values EC3 §6.3.1.1 (NRk) and §6.2.5 (My,Rk); SCI P362
QuantityPublishedVolex AnvilError
Compression resistance NRk3305.1 kN3305.1 kN0.00%
Moment resistance My,Rk352.2 kNm352.2 kNm0.00%
This case is one of 359 published checks the platform passes — the full table, with every source and every error, is public at volexlabs.com/verification.

Frequently asked

Does it use Method 1 or Method 2?
The interaction factors follow Annex B (Method 2), the method in common UK use; both interaction equations (6.61) and (6.62) are checked.
Does it include LTB?
Yes — the χLT reduction is applied to the bending term where the member is not restrained against lateral-torsional buckling.
Is it validated?
The compression and moment resistances are checked against EC3 §6.3 — within 0.00%.
Free tier?
Yes — 10 free calculations a month; Pro (£29/month) adds unlimited runs and PDF calc sheets.

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