American Society of Heating, Refrigerating, and Air-Conditioning Engineers (ASHARE)
Sheet Metal and Air Conditioning Contractors' National Association (SMACNA)
American National Standards Institute (ANSI)
ASTM International
National Fire Protection Association (NFPA)
Leadership in Energy and Environmental Design (LEED)
Occupational Safety and Health Administration (OSHA)
2D and 3D design software
Leading provider of analytics and software
On-Screen Takeoff®
PlanSwift®
Construction Software Advice
American Society of Professional Estimators
Construction Specifications Institute (CSI)
American Association of Cost Engineers
International Cost Estimating and Analysis Association
RS Means
Design Cost Data
Engineering News Record
Construction
Construction of Buildings
Industry Occupational Outlook Handbooks
Department of Labor
