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Image:

Exhaust duct only mechanically fastened and not sealed

Exhaust duct only mechanically fastened and not sealed
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Exhaust duct work and penetration to the exterior have been sealed with mastic

Exhaust duct work and penetration to the exterior have been sealed with mastic
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Exhaust duct work and penetration to the exterior have not been sealed

Exhaust duct work and penetration to the exterior have not been sealed
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Exhaust fan ducts should be made of rigid metal ducting not flexible corrugated ducts like these and the ducts should be attached to the roof or soffit to vent completely to the outside not left open in the attic near an attic vent

Exhaust fan ducts should be made of rigid metal ducting not flexible corrugated ducts like these and the ducts should be attached to the roof or soffit to vent completely to the outside not left open in the attic near an attic vent
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Exhaust fan terminates to the outside

Exhaust fan terminates to the outside
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Exhaust fans in separate dwelling units should not share a common exhaust

Exhaust fans in separate dwelling units should not share a common exhaust
Video:

Exhaust Ventilation Testing

Case Study:

Existing Whole-House Solutions Case Study: 56th and Walnut: A Philly Gut Rehab Development, Philadelphia, Pennsylvania

Case Study:

Existing Whole-House Solutions Case Study: Conway Street Apartments - Greenfield, Massachusetts

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Expanded polystyrene insulation is installed with joints taped and lath attached in preparation for the application of stucco

Expanded polystyrene insulation is installed with joints taped and lath attached in preparation for the application of stucco
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Failure of composition roof shingles and underlayment due to high winds.

Failure of composition roof shingles and underlayment due to high winds.
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Failure of extruded concrete flat tile roofing due to bond failure between tile, mortar, and underlayment resulting from hurricane force winds.

Failure of extruded concrete flat tile roofing due to bond failure between tile, mortar, and underlayment resulting from hurricane force winds.
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Fan CFM rating is higher than the requirement increasing the likelihood that it will meet the performance level once installed

Fan CFM rating is higher than the requirement increasing the likelihood that it will meet the performance level once installed
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Fan CFM rating is higher than the requirement increasing the likelihood that it will meet the performance level once installed

Fan CFM rating is higher than the requirement increasing the likelihood that it will meet the performance level once installed
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Fan exhaust ducts vent out through the soffit vent.

Fan exhaust ducts vent out through the soffit vent.
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Fan shares exhaust and does not have dack-draft damper installed

Fan shares exhaust and does not have dack-draft damper installed
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Fan shares exhaust and has a back-draft damper installed

Fan shares exhaust and has a back-draft damper installed
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Fans from seperate dwellings exhausted together without back-draft dampers and not sealed

Fans from seperate dwellings exhausted together without back-draft dampers and not sealed
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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.
CAD File:

FEMA P-320 Safe Room Design Concrete Plans and Details

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FEMA P-320 Safe Room Design Concrete Plans and Details
CAD File:

FEMA P-320 Safe Room Design Details for Safe Rooms That Use Basement Walls

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FEMA P-320 Safe Room Design Details for Safe Rooms That Use Basement Walls
CAD File:

FEMA P-320 Safe Room Design Exhaust/Ventilation Details

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FEMA P-320 Safe Room Design Exhaust/Ventilation Details
CAD File:

FEMA P-320 Safe Room Design ICF Plans and Details

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FEMA P-320 Safe Room Design ICF Plans and Details
CAD File:

FEMA P-320 Safe Room Design Sheathing Requirements

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FEMA P-320 Safe Room Design Sheathing Requirements