Adequate Ventilation

Proposed by Dr. John S. Billings in “Ventilation and Health”, The Engineering Record, New York, NY, 1893:

• Offices - 30 cfm per person

• Schools & Churches - 40 cfm per person

• Legislature Halls - 60 cfm per seat

Past Building Codes

The history of building codes in the State of Wisconsin has left a legacy of schools, offices and commercial spaces ventilated at 1/3 to 1/2 of the current minimum rate recommended by ASHRAE:

Wisconsin Administrative Code, Comm. 64.05(2)(a) [Table 64.05]:  changed from 5 cfm/occupant to 7-1/2 cfm/occupant in April 1996, but was “stayed” until April 1997.

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