Geotechnical Analysis and Design WDP’s engineering professionals have extensive capabilities in investigating, analyzing, and recommending cost-effective solutions for complex problems involving subsurface conditions, problem soils, foundations, retaining walls, slopes, and pavements.  As part of the investigation and analysis, WDP can provide the following: Subsurface Exploration and Geotechnical Investigations Test Borings and Test Pits Hand-Excavated Auger Borings Soil Sampling including SPT and Shelby Tube Methods Groundwater Measurements Dutch Cone Penetration Testing Dilatometer and Pressuremeter Testing Rock Coring Geophysical Exploration Seismic Refraction Surveys Bedrock Profiling and Rippability Assessment Karst Investigations including Sinkholes and Caverns Foundations Deep Foundations - Driven and Drilled Installations Shallow Foundations Mat or Raft Foundations Bearing Capacity Recommendations Settlement Analysis Foundations on Problem Soils Drainage and Groundwater Considerations Analysis of existing Foundation Systems Repair Analysis and Design Underpinning and Releveling Systems Pavements Asphalt (Flexible) Pavements Concrete (Rigid) Pavements Geosynthetic Applications Overlays Drainage Recommendations Analysis of Existing pavements Repair Documents and Specifications Field Exploration including Coring, Thickness, and Density Determination   Earth Retention Systems Segmental Retaining Walls Mechanically Stabilized Walls Geogrid-Reinforced Walls Cantilever and Reverse Cantilever Walls Gravity Walls Tie-backs and Anchored Systems Stability Analysis - Internal/External (Global) Design Documents including Plans and Specifications Analysis of Existing Earth Retention Systems Repair Analysis and Design Failure Analysis Slopes and Embankments Global Stability Analysis of Existing Slopes  Design of Reinforced and Unreinforced Slopes and Embankments Repair Analysis and Design Recommendations  Surficial Stability Analysis  Drainage Recommendations Faiure Analysis Earthwork Site Preparation Guidelines Subgrade Preparation and Evaluation Structural Fill Placement and Compaction Shrinkage and Subsidence Estimates Material Pre-qualification Testing Problem Soils Analysis and Recommendations Marine Clay Analysis Groundwater and Dewatering Recommendations Service Categories | Structural Evaluations | Facade Investigations | Geotechnical Analysis & Design | | Nondestructive Testing | Construction Management | Laboratory Testing & Analysis | | Construction Materials Testing & Inspection | Expert Witness |