Master of Special Inspection
Certified by the International Code Council:
- Master of Special Inspection | Certification # 8016624
- Reinforced Concrete Special Inspector | Certification # 8016624-47
- Prestressed Concrete Special Inspector | Certification # 8016624-92
- Structural Welding Special Inspector | Certification # 8016624-S2
- Structural Steel and Bolting Special Inspector | Certification # 8016624-S1
- Structural Masonry Special Inspector | Certification # 8016624-84
- Spray-applied Fireproofing Special Inspector | Certification # 8016624-86
- Soils Special Inspector | Certification # 8016624-EC
- California Commercial Building Inspector| Certification ID # 44689-B2
American Welding Society (AWS):
- Certified Welding Inspector | Certification # 12151411
We, (Metzger Testing & Inspection, Inc.) can write the ‘PQR’ (Welder Qualification Record), ‘WPS’ (Welding Procedure Specification), ‘WPQR’ (Welder Performance Qualification Record) for your project.
The plans and D1.1 (Structural Welding Code – Steel) code book require WPS written procedures.
The following procedures are required for consistency and quality of welding.
This includes pre-qualified welding in Clause 5 of the 2020 D1.1 Structural Steel Welding Code Book.
The plans and code book, other than D1.1, require weld testing and written procedures.
Qualified welding by testing is per the (American Welding Society) AWS-B2.1 (Standard Welding Procedure).
Qualified welding by testing is also per the (American Society of Mechanical Engineers Boiler Pressure Vessel Code) ASME-BPVC IX.
Certified by the City of San Diego as an approved Special Inspector:
- Reinforced Concrete| Certification # 1142
- Prestressed Concrete | Certification # 1142
- Structural Steel and Welding | Certification # 1142
- Structural Masonry | Certification # 1142
- Spray-applied Fireproofing | Certification # 1142
Construction Testing Materials Lab Agency:
- Approved Deputy Special Inspection Agency
Other Qualifications:
- American Concrete Institute Field Testing | Certification # 01036452
Contact MTI for more information
Multi-Card Special Inspector
Construction Project Inspection
Douglas Metzger – Certified Special Inspector
Call | 619-889-1314 | email: doug@metzgertesting.com












Certified by the City of San Diego as an approved Special Inspector:
- Special Inspection for Reinforced Concrete | Certification # 1142
- Special Inspection for Prestressed Concrete | Certification # 1142
- Special Inspection for Structural Steel and Welding | Certification # 1142
- Special Inspection for Structural Masonry | Certification # 1142
- Special Inspection for Spray-applied Fireproofing | Certification # 1142


