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Group Delta provides full-scope soils, materials testing, and special inspection services utilizing our certified/accredited/licensed laboratory facilities and personnel.

Group Delta’s soils technicians are trained by registered geotechnical engineers under accreditation procedures approved by the American Association of State Highway Officials (AASHTO). Our concrete technicians are certified by the American Concrete Institute (ACI). Our special inspectors are certified in the disciplines of concrete, masonry, prestressed concrete, structural steel, fireproofing, and soil by the International Code Council (ICC). Additionally, selected structural steel inspectors are certified by the American Welding Society (AWS). Our special inspectors can also perform Non-destructive testing by floor flatness and levelness, ultrasonic, magnetic particle, liquid penetrant, and visual by the American Society for Nondestructive Testing (ANST). Our inspectors are also certified by local municipal building inspection departments for which we have performed various public works projects.

From small additions to new high school campuses, hospitals, commercial/industrial complexes, freeways, and airports, our Materials Testing Department has the experienced personnel to provide Quality Control (QC) and Quality Assurance (QA) testing and inspection services for your project.

Our inspectors hold multiple inspection certifications in various aspects of construction including:

Structural Steel
  • Welding
  • Material I.D.
  • High Strength Bolting
  • Shop Fabrication Inspection
  • Welding Procedure and Welding Qualifications
  • Placement Inspection
  • Rebar and Tendon Placement
  • Pre and Post Tension Stressing
  • Concrete Sampling
  • Sampling of Reinforcing Steel
  • Gunite/Shotcrete
  • Batch Plant Inspection
  • Inspection of Layup
  • Block and Brick Sampling
  • Mortar Sampling
  • Grout Sampling
Drilled-In Anchors
  • Epoxy Anchors
  • Mechanical Anchors
Spray-Applied Fireproofing
  • Cementitious Fireproofing
  • Intumescent Fireproofing
  • Thickness, density, and repair application
Earthwork Inspection and Testing

Group Delta provides geotechnical observation and testing services for all stages of site grading. Our field compaction testing services are provided by experienced soils technicians working under the supervision of licensed professional engineers.

Asphalt Inspection and Testing

Group Delta provides comprehensive asphalt testing and AC Mix Design Services. We are regularly certified by AMRL in our laboratories.

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