Schnabel is known worldwide for its geostructural designs to support excavation, underground openings and tunnels, cofferdams, bulkheads, bridges, slope repairs, and structure underpinning. Developing safe, reliable, and cost-effective underground support systems requires a thorough understanding of site conditions and the ability to develop and apply sophisticated approaches to meet our clients’ expectations.

Excavation Support Design

  • Complete support of excavation
  • Multi-tiered anchored and braced support
  • Soil nail and mechanically stabilized earth (MSE) wall design
  • Slurry wall design Instrumentation and monitoring
  • PLAXIS soil-structure interaction modeling

Foundation Design

  • Drilled shaft design
  • Auger cast and driven piles
  • Deep foundation testing
  • Soil and rock slope repair
  • Soil nail reinforced slopes
  • Tied-back walls
  • Micropile supported retaining structures
  • Rock doweling and rock bolts
  • Drainage and shotcrete Rockfall hazard mitigation

Ground Improvement and Underpinning

  • Low mobility grouting
  • Jet grouting
  • Vibro-replacement
  • Soil mix walls and shear panels
  • Dynamic compaction
  • High-capacity micropile systems

Key Contacts

Paul E. Diggs, PE

Principal / President, Geoprofessional Services

Chad C. Mayers, PE

Chief Operating Officer
Board of Directors