Free swell & swell pressure (oedometer) calculator

Inputs in the worked example

The live calculator starts with these values; change any of them and every result, check and diagram updates instantly.

Worked example — results

• ✗ Swell pressure < design stress (no heave)

Method, formulas and assumptions

• Free swell strain = 100*1.14/19 = 6 %
• Est. swell strain under design stress (log-linear) = IF(60>=185,0,6*LOG10(185/60)/LOG10(185/1)) = 1.2942 %

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