Volex Labs / Calculations / Prestressed concrete beam design to Eurocode 2.

Prestressed concrete beam design to Eurocode 2.

Enter the section, tendon area and jacking stress, and Volex Anvil computes the initial prestress force, the immediate losses (elastic shortening, friction, anchorage draw-in) and the time-dependent losses from creep, shrinkage and relaxation to EC2 §5.10.6 — then checks the concrete stresses at transfer and in service against the §5.10.2 limits.

The flexural capacity of the prestressed section is checked at ULS, with every loss component and stress-limit check shown so the design is fully auditable.

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What Volex Anvil checks

Initial prestress force P0 — EC2 §5.10.2.1
Immediate losses (elastic, friction, draw-in) — EC2 §5.10.4/§5.10.5
Time-dependent losses (creep, shrinkage, relaxation) — EC2 §5.10.6
Concrete stress limits at transfer & service — EC2 §5.10.2.2
Flexural capacity at ULS — EC2 §6.1

Validated against the published example

Pre-tensioned beam — initial force and long-term losses EC2 §5.10.2.1 stress limits; §5.10.6 time-dependent losses

Quantity	Published	Volex Anvil	Error
Initial prestress force P0	1116 kN	1116 kN	0.00%
Long-term losses	23.5%	23.5%	0.00%

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

Pre- or post-tensioned?

Both — the loss model covers elastic shortening and anchorage draw-in for pre-tensioning and friction/wobble losses for post-tensioning, per EC2 §5.10.4 and §5.10.5.

Does it check transfer stresses?

Yes — the concrete compressive and tensile stresses at transfer and in service are checked against the EC2 §5.10.2.2 limits.

Is it validated?

The initial force and long-term loss percentage are checked against EC2 worked values — both within 0.00%.

Free to try?

Yes — 10 free calculations a month with clause references; Pro (£29/month) adds unlimited runs and PDF export.

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