The ‘Blend surfaces’ generates a continuous surface that joins together a set of other surfaces by “filling the voids” between them. This means that the surface automatically gets properties. Use this tool to provide smooth transitions between non-homogeneous sections. Visit our website https://www.bentley.com/en/products/brands/plaxis Visit our Knowledge Base https://communities.bentley.com/products/geotech-analysis/w/plaxis-soilvision-wiki/45126/videos for more instruction videos.