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MTC offers a full-spectrum of geotechnical engineering services ranging from field exploration and data collection to laboratory testing of soil properties, engineering analysis design and earthwork construction monitoring services. Our professional staff includes Washington State registered professional engineers, geologists and engineering geologists that are familiar with the region's subsurface conditions and apply this experience to develop prudent and practical recommendations.

GEOTECHNICAL ENGINEERING  

  • Geologic site reconnaissance and mapping

  • Subsurface explorations: borings, hand-auger and cone penetration tests

  • Shallow and deep foundation design

  • Geopier and stone column “intermediate” foundation geotechnical design

  • Slope stability and settlement analysis

  • Retaining wall and shoring design: temporary and permanent,

  • soil nail,gravity block, mechanically-stabilized earth (MSE),

  • pile / tie-back, rockery composite systems

  • Infiltration testing and design

  • Seepage analysis and slurry wall design

  • Seismically-induced settlement and liquefaction analysis

  • Observation and documentation of auger-cast piles, drilled piers and piles

  • Geologic hazard assessment, mitigation and Critical Areas Ordinance (CAO)

  • Geotechnical engineering forensic investigation

  • Subgrade stabilization: geosynthetic reinforcement and soil amendment

  • Design of rigid and flexible pavements including mix design

  • Ground water monitoring and storm design recommendations

  • Slope liner and earth embankment design

  • Impoundment and pond design 

  • Subsurface Mapping

Geotechnical Engineering Services Include:

  • Capillary and Aeration Porosity (ASTM F1815)

  • Collapse Potential of Soil (ASTM D5333)

  • Consolidation (ASTM D2435)

  • Core Logging

  • Maximum Media Density (Green Roofs) (ASTIM D2399)

  • One Dimensional Swell (ASTM D4546)

  • Permeability: Falling Head (WSDOT 605)

  • Permeability: Flexible Wall (triaxial) (ASTM D5084)

  • Permeability: Rigid Wall (ASTM D2434)

  • Triaxial Shear Testing: Unconsolidated, Undrained (ASTM D2850)

  • Triaxial Shear Testing: Consolidated, Undrained (ASTM D46767)

  • Triaxial Shear Testing: Consolidated, Drained (ASTM D7181)

  • Unconfined Compressive Strength (ASTM D2166)

  • Unit Weight of Soils (ASTM D2937)

  • ​Ground Penetrating Radar (GPR)

  • Utility Locates

  • Structural Scanning 

  • Forensic Surveys

Geophysical Services Include:

Advanced Geotechnical Laboratory Services Include:

GEOTECHNICAL ENGINEERING

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