Home›Knowledge›IMC Chapter 5 — Exhaust Systems
📋 Codecodesexhaust

IMC Chapter 5 — Exhaust Systems

Updated Mar 26, 2026
Commercial kitchen hoods (Type I/II), parking garage ventilation, hazardous exhaust, CO monitoring.

IMC Ch5: Type I hood for grease-producing (fryers, grills) requires UL 300 suppression, 16ga welded grease duct. Type II for steam/heat only. Parking: 0.75 cfm/sf, CO alarm at 35 ppm. Kitchen makeup air within 10% of exhaust volume.

TAGS
IMCkitchen-hoodexhaustparking-garageCO-monitoring
DETAILS
code year
2024
code system
IMC
code section
Chapter 5
RELATED KNOWLEDGE
📋 Code
IBC 903.2.1 — Group A Occupancies (Sprinkler Requirements)
Automatic sprinkler system required throughout buildings with Group A occupancy where fire area exceeds 5,000 square feet, or overall building area exceeds 12,000 square feet, or occupant load of the fire area exceeds 300.
📋 Code
IBC 903.2.7 — Group M Occupancies (Retail Sprinkler Requirements)
Automatic sprinkler system required in Group M (mercantile) occupancies where fire area exceeds 12,000 square feet or building is more than three stories above grade.
📋 Code
IBC 903.2.11.3 — Buildings 55 Feet or More in Height
Automatic sprinkler system required throughout buildings with a floor level having an occupant load of 30 or more that is located 55 feet or more above the lowest level of fire department vehicle access.
📋 Code
IBC 1015.1 — Exit and Exit Access Doorways Required
Two exits or exit access doorways required from any space where occupant load exceeds the table values. Spaces with occupant load exceeding 500 require a minimum of 3 exits. Spaces exceeding 1,000 require 4 exits.
📋 Code
IBC 1017.2 — Exit Access Travel Distance
Maximum travel distance from any point in a building to an exit shall not exceed 200 feet unsprinklered or 250 feet sprinklered for most occupancies. Specific occupancies have modified limits.
📋 Code
IBC Table 601 — Fire-Resistance Rating Requirements
Specifies minimum fire-resistance ratings for structural elements based on construction type (Type I through V). Type IA requires 3-hour rated structural frame, 2-hour floors, and 1.5-hour roof.
← Back to Knowledge Garden