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Ensure that attached garages in multifamily buildings are well-ventilated to reduce the presence of airborne contaminants in the garage and occupied space

Ensure that attached garages in multifamily buildings are well-ventilated to reduce the presence of airborne contaminants in the garage and occupied space
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Even when wind is blowing parallel to a wall, an open casement window can create a zone of higher pressure near the window opening, driving airflow into the house

Even when wind is blowing parallel to a wall, an open casement window can create a zone of higher pressure near the window opening, driving airflow into the house
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Examples of whole-house and local ventilation systems

Examples of whole-house and local ventilation systems
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Exhaust duct is well supported by framing and support straps

Exhaust duct is well supported by framing and support straps
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Exhaust fan installed but in wrong direction causing excessive bend and duct is uninsulated

Exhaust fan installed but in wrong direction causing excessive bend and duct is uninsulated
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Exhaust terminates inside of soffit and was just covered

Exhaust terminates inside of soffit and was just covered
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Exhaust terminates to the outside away from air inlets

Exhaust terminates to the outside away from air inlets
Video:

Exhaust Ventilation Testing

Case Study:

Existing Whole-House Solutions Case Study: Asdal Builders, LLC, Pittsburgh, PA

Case Study:

Existing Whole-House Solutions Case Study: Consortium for Advanced Residential Buildings (CARB), Washington, D.C.

Case Study:

Existing Whole-House Solutions Case Study: Habitat for Humanity South Sarasota County, Venice, Florida

Case Study:

Existing Whole-House Solutions Case Study: Multifamily Individual Heating and Ventilation Systems, Lawrence, Massachusetts

Case Study:

Existing Whole-House Solutions Case Study: National Grid Deep Energy Retrofit Pilot Program - Clark Residence

Case Study:

Fairburn Community

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Fans supply outdoor air tempered by indoor corridor air to the corridors of a multistory multifamily building, pressurizing the corridors and providing make-up air for the elevator shaft, which is depressurized by an exhaust fan.

Fans supply outdoor air tempered by indoor corridor air to the corridors of a multistory multifamily building, pressurizing the corridors and providing make-up air for the elevator shaft, which is depressurized by an exhaust fan.
Presentation:

Field Studies of Indoor Air Quality in New U.S. Homes

Field Studies of Indoor Air Quality in New U.S. Homes
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Fire barriers for ventilated wall cavities use thermally activated expansive materials to close off the ventilation space between the wall cladding and the sheathing during a fire while allowing air flow through the metal mesh during normal conditions

Fire barriers for ventilated wall cavities use thermally activated expansive materials to close off the ventilation space between the wall cladding and the sheathing during a fire while allowing air flow through the metal mesh during normal conditions
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For fireplaces that are not mechanically drafted or direct-vented to outdoors, total net rated exhaust flow of the two largest exhaust fans is .15 CFM per 100 sq. ft. of occupiable space when at full capacity

For fireplaces that are not mechanically drafted or direct-vented to outdoors, total net rated exhaust flow of the two largest exhaust fans is .15 CFM per 100 sq. ft. of occupiable space when at full capacity
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Formula 4.2 from ASHRAE 62.2-2010 for fan flow rate required to achieve an effective ventilation rate

Formula 4.2 from ASHRAE 62.2-2010 for fan flow rate required to achieve an effective ventilation rate
Video:

FORTIFIED Animation: Hurricane - ATTIC VENTS

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FORTIFIED Animation: Hurricane - OPENINGS

Video:

FORTIFIED Roof System - Hurricane

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Fresh air inlet located in ceiling of covered porch

Fresh air inlet located in ceiling of covered porch
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Fresh air inlet located in eave of roof

Fresh air inlet located in eave of roof