Prokon SUMO Subgrade Modulus – Part 1


When modeling a Raft Foundation within SUMO, one of the essential steps is to add an Area support. The Area Support simulates the soil underneath the foundation. The Area support is placed all along the boundaries of the foundation. The support can also be broken up into different sections with varying Subgrade Modulus values.

*See short clip on modelling Raft Foundations in SUMO –

Once placed, within the Plane area support properties, there is a Subgrade modulus (kN/m³) property under the Support section (same as the K modulus – soil property within the Beam on Elastic Support module). This value denotes the stiffness of the soil; the higher the value, the stiffer the soil. A list of typical values have been placed to the right of the Properties snap below. Additional values are available on the following website –

People, Systems and Businesses Perform better with Micrographics.
Our highly experienced Application Engineers can assist you with:
Autodesk Support, Implementation Training | Consulting | Troubleshooting | Custom App Development For RevitInventorFusion & Vault
Prokon Support, Implementation & Training
For all queries