Volex Labs / Calculations / Flat slab punching shear design to Eurocode 2.

Flat slab punching shear design to Eurocode 2.

Give Volex Anvil the slab depth, column size and design load, and it checks punching shear at the column face and the §6.4.2 basic control perimeter u1 at 2d: the shear stress vEd against the concrete resistance vRd,c, and the shear reinforcement required where vEd exceeds it.

The flat-slab design load, effective depth and reinforcement follow the standard UK route — EC0 §6.4.3 combinations and Mosley, Bungey & Hulse Chapter 11 — with every quantity shown so the calc can be checked by hand.

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What Volex Anvil checks

Validated against the published example

Flat slab punching design — Mosley, Bungey & Hulse Chapter 11 EC2 §6.4; Mosley, Bungey & Hulse §11.4; Concrete Centre CCIP-022
QuantityPublishedVolex AnvilError
Design load nEd7.2 kPa7.2 kPa0.00%
Effective depth d219 mm219 mm0.00%
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 check edge and corner columns?
Yes — the control perimeter and the β load-amplification factor are set for internal, edge and corner positions per EC2 §6.4.3, so eccentric column reactions are captured.
Does it design punching shear reinforcement?
Where vEd exceeds vRd,c, links are designed to §6.4.5 and the outer perimeter at which reinforcement is no longer required is reported.
What reference is it checked against?
The flat-slab load and effective depth are validated against Mosley, Bungey & Hulse Chapter 11 and Concrete Centre CCIP-022 — within 0.00% on the published quantities.
Is there a free tier?
Yes — 10 calculations a month free, with clause references. Pro (£29/month) adds unlimited runs and PDF calc sheets.

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