Subsurface Investigations

• Shallow & Deep Foundation Systems
  
• Retaining Walls
  
• Flexible & Rigid Pavement Design
  
• Soils Related Construction Procedures
  
• Slope Stability
  
• Groundwater Control & Drainage
  
• Soil Permeability
  
• Hard Rock Tunneling
  
• Field Engineering
  
• Drilling

TTL determines the best and most economical design and construction recommendation solutions when sites contain poor soil conditions.All tests are in accordance with recognized standards.