From: Characterization of structural failures founded on soils in Panyam and some parts of Mangu, Central Nigeria
Swell Potential
Liquid Limit (%)
Chen (1965)
Snethen et al. (1977)
Low
<  30
<  50
Medium/marginal
30 – 40
50–60
High
40 – 60
>  60
Very High
–