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Consolidation Parameters: PEAT
Typical consolidation parameters (Cc, Cr, Cv, Ca) by soil type for settlement analysis — compression index, recompression index, coefficient of consolidation, and secondary compression coefficient
| soil description | ca cc ratio max (dimensionless) | ca cc ratio min (dimensionless) | cc max (dimensionless) | cc min (dimensionless) | cc typical (dimensionless) | cr cc ratio max (dimensionless) | cr cc ratio min (dimensionless) | cv ft2 day max (ft^2/day) | cv ft2 day min (ft^2/day) | ocr guidance | standard | void ratio max (dimensionless) | void ratio min (dimensionless) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PEAT | 0.1 | 0.04 | 6 | 1.5 | 3 | 0.3 | 0.1 | 0.005 | 0.0001 | OCR~1.0; highly compressible; secondary consolidation often exceeds primary; not suitable as foundation material without improvement | Mesri 1973 ASCE; Das 2021; Terzaghi Peck Mesri 1996; Holtz & Kovacs 1981 | 15 | 5 |
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