// CODE SNIPPET
Related Code Sections
3005.3 Elevators and Conveying Systems, Pressurization
The elevator machine room, control rooms or control space with openings into a pressurized elevator hoistway shall be pressurized upon activation ...
Building Code 2018 of Illinois > 30 Elevators and Conveying Systems > 3005 Machine Rooms > 3005.3 Pressurization
(B) Special Occupancies, Pressurized
This protection technique shall be permitted for equipment in Zone 21 and Zone 22 locations for which it is identified ...
National Electrical Code 2017 of Illinois > 5 Special Occupancies > 506 Zone 20, 21, and 22 Locations for Combustible Dusts or Ignitible Fibers/Flyings > 506.8 Protection Techniques > (B) Pressurized
2303.2.1 Wood, Pressure Process
For wood products impregnated with chemicals by a pressure process, the process shall be performed in closed vessels under pressures not less than 50 ...
Building Code 2018 of Illinois > 23 Wood > 2303 Minimum Standards and Quality > 2303.2 Fire-Retardant-Treated Wood > 2303.2.1 Pressure Process
421.3.1 Special Detailed Requirements Based on Occupancy and Use, Pressure Control
Hydrogen fuel gas rooms shall be provided with a ventilation system designed to maintain the room at a negative pressure in relation to surrounding ...
Building Code 2018 of Illinois > 4 Special Detailed Requirements Based on Occupancy and Use > 421 Hydrogen Fuel Gas Rooms > 421.3 Design and Construction > 421.3.1 Pressure Control
(D) Special Occupancies, Purged and Pressurized
This protection technique shall be permitted for equipment in any hazardous (classified) location for which it is identified ...
National Electrical Code 2017 of Illinois > 5 Special Occupancies > 500 Hazardous (Classified) Locations, Classes I, II, and III, Divisions 1 and 2 > 500.7 Protection Techniques > (D) Purged and Pressurized