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803.1.2 Indoor Air Quality During Construction
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Temporary ventilation during construction shall be provided in accordance with Sections 803.1.2.1 through 803.1.2.3.
Ventilation during construction shall be achieved through openings in the building envelope using one or more of the following methods:
- Natural ventilation in accordance with the provisions of the International Building Code or the International Mechanical Code.
- Fans that produce a minimum of three air changes per hour.
- Exhaust in the work area at a rate of not less than 0.05 cfm/ft2 (0.24 L/s/in2) and not less than 10 percent greater than the supply air rate so as to maintain negative pressurization of the space.
HVAC supply and return duct and equipment openings shall be protected during dust-producing operations.
Where a forced air HVAC system is used during construction, new return air filters shall be installed prior to system flush out and building occupancy.
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