Associations
- Mechanical Contractors Association of Eastern Missouri
- National Certified Pipe Welding Bureau
- American Subcontractors Association
- American Welding Society
- St. Louis Council of Construction Consumers
- Council of Owners and Construction Associates
- Associated General Contractors of Missouri
- Design Build Institute of America
- SMACNA
- ASHRAE
- The Association of Union Constructors
- Plumbing Industry Council