Geotechnical Engineering

INNOVATIVE DESIGN SOLUTIONS

Terrapex’s Geotechnical Engineering division, formerly known as Alston, has developed innovative design solutions for ground engineering applications including slope stabilization, landfill liner design and installation, and geotextile reinforced engineered fills.

Alston has demonstrated time after time that if there is a value engineering solution, we will find it.

SLOPES & EMBANKMENTS

Design of Cuts & Earthfills
Slope Stability Assessment
Slope Reinforcement
Base Reinforcement
Erosion Protection
Slope Stabilization
Mine Tailings Dams
Water Retaining Earth Berms

SHALLOW & DEEP FOUNDATIONS

Evaluation of Soil Bearing Capacity
Settlement Analysis
Deep Foundations including Push, Helical, Driven & Auger Injected Piles & Drilled Shafts
Support to Existing Foundations including Underpinning
Evaluation of Earth Pressures

PAVEMENTS

Pavement Design for Highways, Airports, Light & Heavy Vehicle Usage, Parking Lots
Pavement Condition Surveys

RETAINING WALLS

Engineering Design of Mechanically or Gravity Stabilized Earth Walls
Detailed Computer Software Analysis
Preparation of Construction Drawings

GROUND IMPROVEMENT

Geosynthetic & Soil Nail Reinforcement
Surcharge Loading
Deep & Rapid Impact Compaction Grouting

FACILITY CONTAINMENT

Clay Liners
Polymeric Membranes
Sand Bentonite Liners
Soil & Cement Bentonite Slurry Walls

UTILITIES INFRASTRUCTURE

Buried Construction – Trenches & Tunnels
Pipe Jacking
Pipe Bedding
Trench Backfill