Concrete cores: corrected strength and acceptance 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

• ✓ Mean ≥ 0.85f′c
• ✓ Each core ≥ 0.75f′c

Method, formulas and assumptions

• Lowest corrected = MIN([t.fcorr]) = 27.077 MPa
• Limit: 0.85f′c (mean) = 0.85*32 = 27.2 MPa
• Limit: 0.75f′c (each) = 0.75*32 = 24 MPa
• Mean corrected = AVERAGE([t.fcorr]) = 28.869 MPa
• Use the acceptance rules of the project specification where they differ; AS 1379 / AS 3600 do not set in-situ core criteria in this form.

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