Volex Labs / Calculations / Reinforced concrete pile cap design to Eurocode 2.

Reinforced concrete pile cap design to Eurocode 2.

Enter the column load, pile layout and cap depth, and Volex Anvil designs the pile cap by the strut-and-tie method of EC2 §6.5: the reaction per pile, the main tension tie between piles, the concrete strut from the column to the piles, and the punching and corner shear checks.

Pile caps are deep D-regions, so strut-and-tie is the correct model; the pile reactions, tie steel and cap dimensions all follow Concrete Centre CCIP-021.

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What Volex Anvil checks

Validated against the published example

Pile cap — pile reaction and cap geometry Static equilibrium; Concrete Centre CCIP-021
QuantityPublishedVolex AnvilError
Reaction per pile500 kN500 kN0.00%
Cap width2400 mm2400 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

Why strut-and-tie?
A pile cap is a deep discontinuity region; the EC2 §6.5 strut-and-tie model gives the tension tie and strut forces directly, as in CCIP-021.
Which pile arrangements?
Common 2-, 3-, 4- and multi-pile caps, with the tie pattern and cap dimensions set from the pile spacing and edge distance.
Is it validated?
The pile reaction and cap geometry are checked against CCIP-021 — within 0.00%.
Free tier?
Yes — 10 calculations a month free; Pro (£29/month) adds unlimited runs and PDF calc sheets.

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