Xci Class A & Xci 286 Air Barrier, Water-Resistive Barrier & Fire Performance in Exterior & Interior Walls of Buildings of Type I-V Construction
DrJ provides engineering and related services specializing in light-frame construction.
- Professionally Engineered Solutions
- Code Compliance Evaluations
Structural engineering services are not currently offered in Illinois.
DrJ is an ISO/IEC 17065 accredited product certification body through ANSI Accreditation Services.