Adopts With Amendments
Chapter 5
Exhaust Systems
International Mechanical Code 2021
[F] 501 Exhaust Systems General
Section 501 — Exhaust Systems General. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 501.1 Scope
Section 501.1 — Scope. This section establishes the scope, applicability, and administrative provisions for enforcement of this code. Refer to the official code text for complete requirements.
[F] 501.1.1 Exhaust Systems Scope
Section 501.1.1 — Exhaust Systems Scope. This section establishes the scope, applicability, and administrative provisions for enforcement of this code. Refer to the official code text for complete requirements.
[F] 501.1.2 Exhaust Discharge Location
Section 501.1.2 — Exhaust Discharge Location. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 501.1a Duct Systems General
Section 501.1a — Duct Systems General. This section addresses mechanical system requirements including ventilation, ductwork, and equipment specifications. Refer to the official code text for complete requirements.
[F] 501.2 Exhaust Discharge
Section 501.2 — Exhaust Discharge. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 501.2.1 Exhaust Required
Section 501.2.1 — Exhaust Required. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 501.3 Pressure Equalization
Section 501.3 — Pressure Equalization. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 501.3.1 Exhaust Termination Distances
Section 501.3.1 — Exhaust Termination Distances. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 501.4 Makeup Air Required
Section 501.4 — Makeup Air Required. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 502.1 General
Section 502.1 — General. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 502.1.1 Commercial Kitchen Exhaust
Section 502.1.1 — Commercial Kitchen Exhaust. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 502.1.2 Type I Hood Requirements
Section 502.1.2 — Type I Hood Requirements. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 502.1.3 Grease Duct Construction
Section 502.1.3 — Grease Duct Construction. This section addresses mechanical system requirements including ventilation, ductwork, and equipment specifications. Refer to the official code text for complete requirements.
[F] 502.1a Duct Material Standards
Section 502.1a — Duct Material Standards. This section addresses mechanical system requirements including ventilation, ductwork, and equipment specifications. Refer to the official code text for complete requirements.
[F] 502.2 Minimum Airflow
Section 502.2 — Minimum Airflow. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 502.3 Type I Hood Materials
Section 502.3 — Type I Hood Materials. This section specifies construction material requirements and standards. Refer to the official code for specific material specifications and testing standards. Refer to the official code text for complete requirements.
[F] 502.4 Kitchen Hood Clearances
Section 502.4 — Kitchen Hood Clearances. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 502.5 Type II Hood
Section 502.5 — Type II Hood. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 502.6 Kitchen Hood Fire Suppression
Section 502.6 — Kitchen Hood Fire Suppression. This section addresses fire protection and life safety requirements. Specific provisions depend on building type, occupancy, and construction classification. Refer to the official code text for complete requirements.
[F] 502.7 Kitchen Hood Grease Filters
Section 502.7 — Kitchen Hood Grease Filters. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 502.8 Grease Gutters and Drains
Section 502.8 — Grease Gutters and Drains. This section covers plumbing system requirements. Specific sizing, materials, and installation methods are in the official code text. Refer to the official code text for complete requirements.
[F] 503.1 Commercial Kitchen Hood
Section 503.1 — Commercial Kitchen Hood. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 503.1.1 Commercial Kitchen Hoods
Section 503.1.1 — Commercial Kitchen Hoods. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 503.1.2 Type II hoods
Section 503.1.2 — Type II hoods. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 503.1a Duct Insulation Required
Section 503.1a — Duct Insulation Required. This section addresses mechanical system requirements including ventilation, ductwork, and equipment specifications. Refer to the official code text for complete requirements.
[F] 503.2 Type II Hoods
Section 503.2 — Type II Hoods. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 503.2.1 Type I Hood Construction
Section 503.2.1 — Type I Hood Construction. This section specifies construction material requirements and standards. Refer to the official code for specific material specifications and testing standards. Refer to the official code text for complete requirements.
[F] 503.3 Exhaust Duct Slope
Section 503.3 — Exhaust Duct Slope. This section addresses mechanical system requirements including ventilation, ductwork, and equipment specifications. Refer to the official code text for complete requirements.
[F] 503.4 Grease gutters and drains
Section 503.4 — Grease gutters and drains. This section covers plumbing system requirements. Specific sizing, materials, and installation methods are in the official code text. Refer to the official code text for complete requirements.
[F] 504 Clothes Dryer Exhaust
Section 504 — Clothes Dryer Exhaust. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 504.1 Clothes Dryer Exhaust
Section 504.1 — Clothes Dryer Exhaust. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 504.1.1 Clothes Dryer Exhaust
Section 504.1.1 — Clothes Dryer Exhaust. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 504.1.2 Dryer Duct Termination
Section 504.1.2 — Dryer Duct Termination. This section addresses mechanical system requirements including ventilation, ductwork, and equipment specifications. Refer to the official code text for complete requirements.
[F] 504.1a Duct Sealing
Section 504.1a — Duct Sealing. This section addresses mechanical system requirements including ventilation, ductwork, and equipment specifications. Refer to the official code text for complete requirements.
[F] 504.2 Dryer Exhaust Duct Size
Section 504.2 — Dryer Exhaust Duct Size. This section addresses mechanical system requirements including ventilation, ductwork, and equipment specifications. Refer to the official code text for complete requirements.
[F] 504.2.1 Dryer Exhaust Duct Material
Section 504.2.1 — Dryer Exhaust Duct Material. This section addresses mechanical system requirements including ventilation, ductwork, and equipment specifications. Refer to the official code text for complete requirements.
[F] 504.3 Bathroom Exhaust
Section 504.3 — Bathroom Exhaust. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 504.4 Dryer Exhaust Duct Length
Section 504.4 — Dryer Exhaust Duct Length. This section addresses mechanical system requirements including ventilation, ductwork, and equipment specifications. Refer to the official code text for complete requirements.
[F] 504.4.1 Dryer Exhaust - Specified Length
Section 504.4.1 — Dryer Exhaust - Specified Length. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 504.5 Clothes Dryer Duct - Material
Section 504.5 — Clothes Dryer Duct - Material. This section addresses mechanical system requirements including ventilation, ductwork, and equipment specifications. Refer to the official code text for complete requirements.
[F] 504.6 Dryer Exhaust Duct Length
Section 504.6 — Dryer Exhaust Duct Length. This section addresses mechanical system requirements including ventilation, ductwork, and equipment specifications. Refer to the official code text for complete requirements.
[F] 505 Domestic Kitchen Exhaust
Section 505 — Domestic Kitchen Exhaust. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 505.1 Domestic Kitchen Exhaust
Section 505.1 — Domestic Kitchen Exhaust. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 505.1.1 Domestic Range Hood Exhaust
Section 505.1.1 — Domestic Range Hood Exhaust. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 505.2 Duct Material
Section 505.2 — Duct Material. This section addresses mechanical system requirements including ventilation, ductwork, and equipment specifications. Refer to the official code text for complete requirements.
[F] 505.3 Duct Clearance
Section 505.3 — Duct Clearance. This section addresses mechanical system requirements including ventilation, ductwork, and equipment specifications. Refer to the official code text for complete requirements.
[F] 505.4 Dryer exhaust termination
Section 505.4 — Dryer exhaust termination. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 506.1 Commercial Kitchen Hood Materials
Section 506.1 — Commercial Kitchen Hood Materials. This section specifies construction material requirements and standards. Refer to the official code for specific material specifications and testing standards. Refer to the official code text for complete requirements.
[F] 506.1.1 Factory-Built Grease Duct Assemblies
Section 506.1.1 — Factory-Built Grease Duct Assemblies. This section addresses mechanical system requirements including ventilation, ductwork, and equipment specifications. Refer to the official code text for complete requirements.
[F] 506.2 Multiple dryer connections
Section 506.2 — Multiple dryer connections. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 506.3 Grease Filters
Section 506.3 — Grease Filters. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 506.3.1 Type I Hood Location
Section 506.3.1 — Type I Hood Location. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 506.3.2 Type II Hood Location
Section 506.3.2 — Type II Hood Location. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 506.4 Grease Duct Cleanout and Access
Section 506.4 — Grease Duct Cleanout and Access. This section addresses mechanical system requirements including ventilation, ductwork, and equipment specifications. Refer to the official code text for complete requirements.
[F] 506.5 Grease Filters
Section 506.5 — Grease Filters. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 507.1 Hazardous Exhaust Systems
Section 507.1 — Hazardous Exhaust Systems. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 507.1.1 Type I Hood Requirements
Section 507.1.1 — Type I Hood Requirements. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 507.2 Type I Hood Size
Section 507.2 — Type I Hood Size. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 507.2.1 Compensating Hoods
Section 507.2.1 — Compensating Hoods. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 507.3 Type I Hood Grease Filters
Section 507.3 — Type I Hood Grease Filters. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 507.4 Grease Duct Cleanouts
Section 507.4 — Grease Duct Cleanouts. This section addresses mechanical system requirements including ventilation, ductwork, and equipment specifications. Refer to the official code text for complete requirements.
[F] 508.1 Fire Suppression - Kitchen
Section 508.1 — Fire Suppression - Kitchen. This section addresses fire protection and life safety requirements. Specific provisions depend on building type, occupancy, and construction classification. Refer to the official code text for complete requirements.
[F] 508.2 Hazardous Exhaust - Construction
Section 508.2 — Hazardous Exhaust - Construction. This section specifies construction material requirements and standards. Refer to the official code for specific material specifications and testing standards. Refer to the official code text for complete requirements.
[F] 509.1 Dust, Stock and Refuse Exhaust
Section 509.1 — Dust, Stock and Refuse Exhaust. This section establishes occupancy classification and use requirements that determine applicable building code provisions. Refer to the official code text for complete requirements.
[F] 509.2 Dust Collection Equipment
Section 509.2 — Dust Collection Equipment. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 510.1 Smoke Control Systems
Section 510.1 — Smoke Control Systems. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 510.2 Hazardous Exhaust Duct Material
Section 510.2 — Hazardous Exhaust Duct Material. This section addresses mechanical system requirements including ventilation, ductwork, and equipment specifications. Refer to the official code text for complete requirements.
[F] 511.1 Dust, Stock and Refuse Systems
Section 511.1 — Dust, Stock and Refuse Systems. This section establishes occupancy classification and use requirements that determine applicable building code provisions. Refer to the official code text for complete requirements.
[F] 513.1 Parking Garage Ventilation
Section 513.1 — Parking Garage Ventilation. This section addresses mechanical system requirements including ventilation, ductwork, and equipment specifications. Refer to the official code text for complete requirements.
Code sections are sourced from the International Code Council (ICC) and NFPA. Refer to ICC Digital Codes or NFPA for the authoritative source documents.