DC Inspections runs a full inspection and materials testing laboratory in San Luis Obispo, serving projects across SLO County and the Central Coast. We handle the special inspection line items on your permit, the welding and steel inspection your fabricator and EOR need, and the concrete, masonry and soils testing your specifications call for.
Welding & Structural Steel Inspection
Structural steel and welding inspection for SLO County projects — moment frames, shear connections, embeds, retrofits and PV racking — plus the welder and procedure qualification testing that has to be on file before the first pass.
- AWS-certified welding inspection, shop and field
- High-strength bolt / bolt torque inspection
- Ultrasonic (UT), magnetic particle (MT) and dye penetrant (PT) testing
- Welder performance qualification testing (WPQ)
- Welding procedure specifications and qualification records (WPS / PQR)
- AWS D1.1–D1.8, ASME Section IX and API 1104 qualification
Materials Testing & Laboratory
Field sampling and laboratory testing of the materials going into your structure, run to the ASTM methods your specifications and the building department reference — with results reported back to the project team, not filed away.
- Concrete compression, flexural beam and core testing
- Concrete placement inspection — slump, air content, cylinder sampling
- CMU, prism, mortar and grout compression testing
- Masonry and veneer shear testing, in-situ or in the lab
- Reinforcing steel tensile, yield, elongation and bend testing
- Soil maximum density / optimum moisture curves and compaction testing
Construction Special Inspection
Continuous and periodic special inspection that satisfies the statement of special inspections on your permit, documented in daily reports your building official, EOR and general contractor can all work from.
- Reinforcing steel and concrete placement inspection
- Masonry and shotcrete placement inspection
- Post-installed anchor inspection and proof testing
- PT cable stressing and drilled pier footing inspection
- Spray-applied fireproofing and intumescent FRM inspection
- Soil grading observation and coatings inspection
Our Certifications
Special inspection only counts if the person doing it is certified for that scope. Our inspectors' and technicians' certifications are tracked and renewed internally, and we'll send current certification cards for the people assigned to your project on request — building departments and plan checkers ask, and we'd rather have it ready.
Structural Steel & Bolting, Structural Welding, Reinforced Concrete, Prestressed Concrete, Structural Masonry, Soils, Spray-Applied Fireproofing, Commercial Building Inspector, and Master of Special Inspection.
AWS Certified Welding Inspector credentials for welding inspection and for witnessing welder and procedure qualification testing.
ACI Concrete Field Testing Technician Grade I and NICET Construction Materials Testing certifications in concrete, soils and asphalt.
ASNT-based Level II qualification in ultrasonic (UT), magnetic particle (MT) and dye penetrant (PT) testing, under our written practice.
Why Central Coast Builders Call Us
Our San Luis Obispo office and laboratory are at 170 Granada Drive, Unit D, San Luis Obispo, CA 93401 — not a dispatch point three hours away. Inspectors are local, so same-week scheduling is normal and next-day is often possible.
Special inspection, materials testing, NDT, welder qualification and soils work come from the same firm, so nobody is coordinating four vendors and four sets of reports.
Daily reports, lab results and certifications are issued from our own system and available to your team through the client portal — including the documentation packages plan checkers ask for at closeout.
Service area: San Luis Obispo · Paso Robles · Atascadero · Arroyo Grande · Pismo Beach · Grover Beach · Morro Bay · Nipomo · Templeton · Los Osos · Cambria · Santa Maria and the surrounding Central Coast.
Request a Quote
Tell us the project, the scope and roughly when it starts. Someone from the San Luis Obispo office will get back to you with pricing and availability — usually the same business day.
In a hurry, or already on site? Call 805-392-5100 or email info@dcinspections.com.
170 Granada Drive, Unit D, San Luis Obispo, CA 93401
805-392-5100