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		Drainage Systems A storm drain for a public area: Basement waterproofing and back-drain. Due to clay soil, clog prone filter-cloth was not used. Instead, pea gravel was used. Area drains (surface drainage):