Definition(s)
Undrained Condition
Condition whereby the applied stresses and stress changes are supported by both the soil skeleton and the pore fluid and do not cause a change in volume.
Source: API RP 2GEO, Geotechnical Foundation Design Considerations, First Edition, April, 2011, Addendum 1, October 2014. Global Standards
Source: API Recommended Practice 2GEO, Geotechnical and Foundation Design Considerations, First Edition, April 2015 (Addendum 1, October 2014). Global Standards