https://communities.bentley.com/products/geotech-analysis/f/forum/216453/hardening-soil-model-advanced-parametersIn PLAXIS 2D, for undrained (B) conditions, there are two parameters that are not specified in the manuals. I have to determine the parameters from just one CPT. What do the S u,inc and y ref represent? And what is their relevance in this model?en-USTelligent Community 12https://communities.bentley.com/thread/660055?ContentTypeID=1Mon, 12 Jul 2021 13:43:32 GMT6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:ca1cf622-af02-458d-b1f0-b68ed76d98deMonica Relats Martinez<p>Thank you! Really helpful!</p><div style="clear:both;"></div>https://communities.bentley.com/thread/659814?ContentTypeID=1Fri, 09 Jul 2021 15:28:19 GMT6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:9839ddcf-17db-4f2f-913d-9454adf57272Martin Hawkes<p>Suinc and yref are for specifying a linear increase in strength with depth. You probably don&#39;t see them in the manual under Hardening soil because they are common to many of the soil models.</p> <p>Suinc is the increase in strength per unit length of depth, yref is the depth at which the strength (Su or cohesion) is specified. These are advanced features and not usually used for most analysis.</p> <p></p> <p>Martin</p><div style="clear:both;"></div>