Special Inspection & Materials Testing Services
Code-compliant inspection and laboratory testing across all major construction material types — delivered by certified technical staff.
Construction Special Inspections NW provides the full range of special inspection and materials testing services required by the International Building Code and project-specific structural documents. Our in-house laboratory and field inspection teams work together to keep your project on schedule and in compliance.
Structural Concrete
We observe and document cast-in-place and precast concrete operations from mix design review through placement and curing. Our technicians sample fresh concrete, fabricate test cylinders, and perform slump, air content, and temperature testing per ACI 318 and project specifications. Cylinder break results are reported promptly from our in-house laboratory.
ACI 318 · ACI 305 · ASTM C31 · ASTM C39
Structural Steel & Welding
Our AWS-certified welding inspectors perform visual examination of structural steel connections, welds, and high-strength bolted joints. We verify material certifications, weld procedure specifications, and welder qualifications. Non-destructive examination methods including ultrasonic testing are available as required.
AWS D1.1 · AISC 360 · IBC Chapter 17
Masonry
Special inspection of masonry construction includes observation of mortar mixing and placement, grout sampling and testing, and verification of reinforcement placement and cover. We document compliance with the project masonry specifications and IBC Chapter 17 requirements throughout construction.
TMS 402 · IBC Chapter 17 · ASTM C270
Soils & Foundations
Our field technicians perform in-place density and moisture testing using nuclear gauge and sand cone methods to verify compaction meets geotechnical recommendations. We observe foundation subgrade conditions, document bearing capacity, and provide compaction reports for each lift.
ASTM D1556 · ASTM D6938 · AASHTO T310
Reinforcing Steel & Post-Installed Anchors
We inspect reinforcing steel placement, bar size, spacing, and cover prior to concrete placement. Post-installed anchor inspection includes verification of hole diameter, depth, and cleanliness, as well as adhesive anchor installation observation per ICC-ES evaluation reports and manufacturer requirements.
ACI 318 · ICC-ES AC308 · IBC Chapter 17
Materials Laboratory
Our centrally located Wenatchee laboratory performs concrete cylinder compression testing, aggregate gradation, soil classification, and Proctor compaction testing. Having an in-house lab means faster turnaround on results and direct communication between field technicians and lab staff.
ASTM C39 · ASTM C136 · ASTM D698 · ASTM D1557
Certifications & Standards
ICC Certified
International Code Council certification in special inspection disciplines including reinforced concrete, structural masonry, and structural steel.
AWS Certified
American Welding Society Certified Welding Inspectors (CWI) for structural steel and welding inspection per AWS D1.1.
ACI Certified
American Concrete Institute field testing technician certification for concrete sampling, testing, and cylinder fabrication.
NICET Certified
National Institute for Certification in Engineering Technologies certification in construction materials testing.
Need special inspection on your next project?
Contact our team to discuss your project requirements and schedule.