The Collin Group has been designing excavation support systems for several decades. Systems that we have been the engineer of record on include: soldier beam and lagging walls, tangent pile walls, slurry walls, deep mixing method walls, and soil nails walls. The designs of these structures have utilized state-of-the-practice design tools for typical projects. However, for complicated projects where more rigorous analysis is required, state-of-the-art tools like Plaxis are used to better understand the soil-structure interaction.
