2018 International Mechanical Code - Soft Cover

Prescriptive and performance-related provisions are used to establish minimum regulations for mechanical systems. The IMC was created using broad-based principles that allow for the use of new materials, methods, and designs.

Important changes include:

• Added coverage of pollution control units.
• A new exception was added to recognize Type I kitchen hoods listed for clearances to combustibles of less than 18 inches.
• Added coverage for a newer type of non-metallic duct, phenolic duct.
• New coverage for high volume large diameter fans (HVLD), also referred to as high volume low speed (HVLS) fans.
• Relaxed requirements for sealing of duct joints and seams for Snap- and Button-lock duct joints located within the thermal envelope.