Avalon Structural Inc. Technology and Hard Work!
Home Deep Foundations and Helix Piers Road Washout Repair Retaining Walls and Landslide Repair Drilled Foundations and Shallow Foundations Foundation Repair Foundation Replacement Rooms Under Existing Homes Post-Tensioned Concrete Drainage Systems Patios and Flatwork Commercial Projects For Engineers Avalon Personnel and Contact Business Associations The Rockettes Send Query		Rooms Under Existing Homes Avalon builds waterproof rooms under existing homes. The following two photos show a before and after. Along the wall on the right, Avalon employed shoring techniques that allowed the new retaining wall below to align flush with the existing stem wall above. The completed basement. We can put a basement under an existing house. In this example, we installed four 3.5" diameter round shaft helix piers to support the interior of a two-story one hundred year-old Victorian, then excavated around the helix piers. These heavy duty helix piers have ample lateral strength to stand without lateral soil support.