Construction Testing and Geotechnical Materials

Construction testing

CTS provides on-site field inspection and geotechnical and construction materials laboratory services to assure the proper selection, quality, and workmanship of the construction materials being used and the services provided comply with the project specifications. Thielsch makes the effort to understand our clients’ needs, with the intent to provide a sensible scope of testing. Our laboratories are accredited by AASHTO and the Army Corp of Engineers and our field staff is certified by ACI, NICET, NETTCP, ICC, AWS, FACE, OSHA, PMP and NHI.

On-site construction testing services:

  • Field soils, concrete, masonry, bituminous concrete and roof inspection
  • Monitoring and reporting of construction activities
  • Production plant inspections
  • Steel reinforcing and bolting inspections
  • Structural steel, welder qualifications and nondestructive testing
  • Special Inspections services
  • Anchor Bolt Pull-out testing for DOT verification and acceptance
  • In-Situ destructive and nondestructive concrete investigation
  • Pre/Post construction surveys and Vibration monitoring
  • Environmental monitoring for Bridge Deck placements
  • Develop Quality Control and Quality Assurance programs
  • Design review of concrete, masonry, and bituminous concrete mixes
  • Floor Flatness F-Number testing

Geotechnical and Construction Materials laboratory services include:

  • Compressive strength testing of concrete, mortar, grout, CMU block, drilled concrete cores and tile
  • Soil analyses including gradation, proctor, hydrometer, permeability, atterberg limits and classification
  • Direct shear, triaxial compression, unconfined compression, and consolidations
  • Rock testing, freeze-thaw, fracture logging, point load, and petrographic analyses
  • Bituminous concrete analyses including extraction and gradation, bulk specific gravity, marshal, and stability & flow
  • Geomembrane direct shear and seam testing
  • Fire Proofing


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