Volex Labs / Calculations / Timber connection design to Eurocode 5.

Timber connection design to Eurocode 5.

Enter the members, fastener and geometry, and Volex Anvil designs the timber connection by the EC5 European Yield Model: the embedment strength of each member, the governing Johansen failure mode, the lateral load-carrying capacity per fastener per shear plane, and the rope-effect enhancement for axially-withdrawing fasteners.

Embedment strengths and the yield modes follow EC5 §8.2 and §8.3, so the capacity per dowel, bolt or screw matches the code for single- and double-shear joints.

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What Volex Anvil checks

Validated against the published example

Timber fastener embedment strength — EC5 European Yield Model EC5 §8.3.1.1 Eq (8.15) — embedment strength
QuantityPublishedVolex AnvilError
Embedment strength fh,k (member 1)19.71 MPa19.71 MPa0.01%
Embedment strength fh,k (member 2)27.70 MPa27.70 MPa0.02%
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

Which fasteners?
Dowels, bolts, nails and screws in single and double shear, each with the appropriate embedment strength and yield modes.
Does it include the rope effect?
Yes — the rope-effect contribution from axial fastener withdrawal is added within the EC5 cap on the Johansen capacity.
Is it validated?
The embedment strengths are checked against EC5 §8.3 — within 0.02%.
Free tier?
Yes — 10 calculations a month free; Pro (£29/month) adds unlimited runs and PDF calc sheets.

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