Enter carbonation-depth measurements in millimetres. The calculator determines the mean,
maximum and minimum carbonation depth and can optionally compare the readings with measured reinforcement cover.
Mean carbonation depth
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Maximum depth
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Minimum depth
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Cover − mean depth
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Cover − maximum depth
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Spread (max − min)
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Engineering note: This calculator is an assessment and visualization aid.
IS 516 (Part 5/Sec 3): 2021 specifies the carbonation-depth measurement and reporting procedure;
it does not establish a universal permissible carbonation-depth limit. Do not use this calculator
alone to declare a structure acceptable or unacceptable.