Volex Labs / Calculations / Reinforced concrete corbel design to Eurocode 2.

Reinforced concrete corbel design to Eurocode 2.

Enter the corbel geometry and load, and Volex Anvil designs it by the strut-and-tie model of EC2 §6.5 and Annex J.3: the inclined concrete strut angle and force, the main horizontal tie reinforcement at the top, and the horizontal links that distribute the bursting force.

Corbels are classic discontinuity (D-) regions, so the strut-and-tie approach is the correct one — the strut angle, node stresses and tie steel are all reported.

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What Volex Anvil checks

Validated against the published example

RC corbel strut-and-tie — strut angle and main steel EC2 §6.5.3 + §J.3 strut-and-tie geometry
QuantityPublishedVolex AnvilError
Strut angle θ63.8°63.8°0.00%
Main tie reinforcement As408 mm²408 mm²0.00%
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

Why strut-and-tie?
A corbel is a D-region where plane sections do not remain plane; the strut-and-tie model of EC2 §6.5 is the code-correct method.
Does it check the node?
Yes — the concentrated node under the bearing and at the tie anchorage is checked against the EC2 §6.5.4 node stress limits.
Is it validated?
The strut angle and main tie steel are checked against EC2 Annex J — within 0.00%.
Free to use?
Yes — 10 calculations a month free; Pro (£29/month) adds unlimited runs and PDF calc sheets.

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