Volex Labs / Calculations / Reinforced concrete design to AS 3600 (Australian).

Reinforced concrete design to AS 3600 (Australian).

For Australian projects, Volex Anvil designs RC beams to AS 3600:2018 using the rectangular stress block: the required tension reinforcement Ast for the design moment, the shear design, and the minimum and maximum steel limits — each referenced to its AS 3600 clause.

The stress-block parameters (α2, γ) and capacity factors follow AS 3600:2018, so the required Ast matches Australian textbook and Cement Concrete & Aggregates Australia worked examples.

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What Volex Anvil checks

Rectangular stress block (α2, γ) — AS 3600 §8.1
Required tension steel Ast — AS 3600 §8.1
Capacity reduction factor φ — AS 3600 Table 2.2.2
Shear design — AS 3600 §8.2
Minimum / maximum reinforcement — AS 3600 §8.1.6

Validated against the published example

RC beam flexure — required tension steel Ast AS 3600:2018 Section 8.1 — rectangular stress block

Quantity	Published	Volex Anvil	Error
Required steel Ast (example 1)	1147 mm²	1147 mm²	0.00%
Required steel Ast (example 2)	1504 mm²	1504 mm²	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

Which stress block?

The rectangular stress block of AS 3600:2018 §8.1 with the α2 and γ parameters for the concrete strength.

Does it do shear?

Yes — shear is designed to AS 3600 §8.2 with the concrete and shear-reinforcement contributions.

Is it validated?

The required tension steel is checked against AS 3600:2018 — 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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