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468.3.6.4 Chemistry Laboratories and Science Classrooms
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HVAC systems in chemistry labs and science classrooms shall be designed and installed to ensure that chemicals originating from the space are not recirculated.
Exception: A high capacity emergency exhaust system providing 20 air changes per hour may be used in chemistry laboratories and science classrooms with fume hoods. Positive ventilation may be provided via doors or windows opening to the exterior. Signs providing operational instructions shall be permanently installed at the emergency exhaust system fan switch and adjacent to the door(s) or window(s) to be opened.
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468.3.6.4 Special Detailed Requirements Based on Use and Occupancy, Chemistry Laboratories and Science Classrooms
HVAC systems in chemistry labs and science classrooms shall be designed and installed to ensure that chemicals originating from the space ...
2017 FBC - Building, 6th edition > 4 Special Detailed Requirements Based on Use and Occupancy > 468 Schools, Colleges and Universities > 468.3 Building Construction > 468.3.6 Mechanical > 468.3.6.4 Chemistry Laboratories and Science Classrooms
468.3.6.4 Special Detailed Requirements Based on Occupancy and Use, Chemistry Laboratories and Science Classrooms
HVAC systems in chemistry labs and science classrooms shall be designed and installed to ensure that chemicals originating from the space ...
2020 FBC - Building, 7th edition > 4 Special Detailed Requirements Based on Occupancy and Use > 468 Schools, Colleges and Universities > 468.3 Building Construction > 468.3.6 Mechanical > 468.3.6.4 Chemistry Laboratories and Science Classrooms
468.3.6.4 Special Detailed Requirements Based on Use and Occupancy, Chemistry Laboratories and Science Classrooms
HVAC systems in chemistry labs and science classrooms shall be designed and installed to ensure that chemicals originating from the space ...
2014 FBC - Building, 5th edition > 4 Special Detailed Requirements Based on Use and Occupancy > 468 Schools, Colleges and Universities > 468.3 Building Construction > 468.3.6 Mechanical > 468.3.6.4 Chemistry Laboratories and Science Classrooms
468.3 Special Detailed Requirements Based on Use and Occupancy, Building Construction
be used in chemistry laboratories and science classrooms with fume hoods. Positive ventilation may be provided via doors or windows opening to the exterior ...
2017 FBC - Building, 6th edition > 4 Special Detailed Requirements Based on Use and Occupancy > 468 Schools, Colleges and Universities > 468.3 Building Construction
468.3 Special Detailed Requirements Based on Occupancy and Use, Building Construction
changes per hour may be used in chemistry laboratories and science classrooms with fume hoods. Positive ventilation may be provided via doors or windows ...
2020 FBC - Building, 7th edition > 4 Special Detailed Requirements Based on Occupancy and Use > 468 Schools, Colleges and Universities > 468.3 Building Construction