Business Details
45 Years
experience
Trusted Construction Testing & Inspection Services in Washington
Established in 1981, Materials Testing & Consulting (MTC) has built a reputation as a trusted provider of geotechnical engineering, materials testing, and construction inspection services. Our WABO and AASHTO-certified laboratories deliver precise data for construction materials, while our field teams ensure compliance with engineering specifications and local building codes. With multiple accredited locations across Western Washington, we serve school districts, municipalities, and private entities through every phase of construction. Our staff includes Washington State-licensed engineers, geologists, and technicians committed to safety, reliability, and technical excellence. MTC maintains affiliations with leading industry organizations, including the American Concrete Institute and ASTM, to uphold the highest standards.We specialize in special inspections, non-destructive testing, and environmental assessments that prevent costly failures. Our geotechnical services span subsurface exploration, slope stability analysis, and pavement design tailored to regional conditions. Clients benefit from our transparent project oversight and decades of localized expertise in the Puget Sound area. We prioritize timely solutions that align with project timelines while maintaining rigorous quality control. MTC remains dedicated to advancing construction practices through innovation and adherence to evolving industry standards.
Services
Geotechnical Engineering
Materials Testing
Special Inspection
Environmental Services
Construction Monitoring
Non-Destructive Testing
Phase I ESAs
Soil Analysis
Concrete Testing
Asphalt Evaluation
Details
- Year established: 1981
Highlights and features
- We have over 40 years of experience in construction materials testing since 1981.
- Our staff includes Washington State-licensed engineers and geologists.
- We maintain WABO and AASHTO-certified laboratories for precise testing.
- Our special inspections reduce costly construction failures through proactive monitoring.
- We serve diverse sectors including education, healthcare, and military infrastructure.
Associations and certifications
- Washington Association of Building Officials (WABO)
- American Association for Laboratory Accreditation (A2LA)
- American Association of State Highway and Transportation Officials (AASHTO)
- International Code Council (ICC)
- American Concrete Institute (ACI)
- American Society for Testing and Materials (ASTM)
Services
Geotechnical Engineering
MTC provides comprehensive geotechnical engineering services including subsurface exploration, slope stability analysis, and foundation design. Our Washington State-licensed engineers conduct field investigations and laboratory testing to assess soil properties. Clients receive tailored recommendations for earthwork construction and pavement design based on regional subsurface conditions.
Materials Testing
Our AASHTO-accredited laboratories perform testing on concrete, asphalt, aggregates, and masonry materials. Services include compression testing, moisture analysis, and asphalt core density evaluation. WABO-certified supervisors ensure accurate data for quality control of construction materials used in infrastructure and building projects.
Special Inspection
MTC's certified technicians provide special inspections for reinforced concrete, structural steel, and fireproofing applications. We verify compliance with design specifications through on-site monitoring of construction processes. Our team identifies potential issues proactively to prevent costly rework during project execution.
Environmental Services
We conduct Phase I and II Environmental Site Assessments per ASTM standards. Certified Environmental Inspectors evaluate contamination risks and regulatory compliance for commercial real estate transactions. Services include critical areas investigations and groundwater monitoring system design.
Non-Destructive Testing
MTC employs ultrasonic and magnetic particle testing methods to evaluate structural integrity without material damage. Our ASNT-certified technicians inspect welds, steel components, and concrete structures to identify hidden flaws while maintaining project timelines.
Questions
What construction materials testing services do you offer?
We test concrete, asphalt, aggregates, masonry, and soils in our AASHTO-accredited laboratories, providing compression, density, and durability analysis.
Are your inspectors certified for special construction projects?
Yes, our technicians hold WABO certifications and specialize in special inspections for structural steel, concrete, and fireproofing applications.
Do you provide geotechnical services for infrastructure projects?
We offer subsurface exploration, pavement design, and slope stability analysis tailored to transportation and municipal infrastructure needs.
Can you perform environmental assessments for commercial properties?
Yes, we conduct ASTM-compliant Phase I and II Environmental Site Assessments with Certified Environmental Inspectors.
What areas do you serve in Washington State?
We operate throughout Western Washington with offices in Burlington, Bellingham, Tukwila, Olympia, and Silverdale.
Reviews (2)
Beth Edwards
Dec 17, 2021
Report
Client service is excellent and their professional services, inspections and laboratory are beyond reproach.
Andy M.
Jul 15, 2018
Report
Our first report came to an unacceptable conclusion. Our local county brought in a second geologist (at the county expense) to review the report, re-examine the location, and explain the error of their ways. We paid another 50% to MTC on top of the first report to get an updated report with an acceptable conclusion.
