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Typical basement foundation and safe room.

Typical basement foundation and safe room.
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Typical lateral load transfer for one- and two- story buildings.

Typical lateral load transfer for one- and two- story buildings.
Video:

UAF Cooperative Extension Service: Radon Mitigation in Super-Insulated Slab

Video:

UMN NorthernSTAR: DOE Building America: Exterior Foundation Insulation

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Untreated lumber has been used on a below-grade wall against masonry

Untreated lumber has been used on a below-grade wall against masonry
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Unvented concrete masonry unit crawl space with exterior insulation - designed for termite resistance in moderately infested areas

Unvented concrete masonry unit crawl space with exterior insulation - designed for termite resistance in moderately infested areas
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Unvented crawl space with interior insulation - designed for termite resistance in heavily infested areas

Unvented crawl space with interior insulation - designed for termite resistance in heavily infested areas
Presentation:

Upgrading Below Grade Spaces

Upgrading Below Grade Spaces
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Uplift forces acting on the roof are met with roof-wall connections that distribute the forces down the walls and into the foundation along the continuous load path.

Uplift forces acting on the roof are met with roof-wall connections that distribute the forces down the walls and into the foundation along the continuous load path.
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Use a water pressure gauge to check the house's cold water pressure at a garden hose spigot.

Use a water pressure gauge to check the house's cold water pressure at a garden hose spigot.
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Use of Connectors and Brackets

Use of Connectors and Brackets
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Vented crawl space with concrete walls and insulated ceiling

Vented crawl space with concrete walls and insulated ceiling
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Vented crawl space with insulation in the ceiling

Vented crawl space with insulation in the ceiling
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Vented crawlspace cripple wall has seismic retrofits – plywood is added on interior that fastens to extra blocking added at sill plate and connected to foundation with new anchor bolts

Vented crawlspace cripple wall has seismic retrofits – plywood is added on interior that fastens to extra blocking added at sill plate and connected to foundation with new anchor bolts
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Vented crawlspace foundation insulated at floor joist with rigid foam.

Vented crawlspace foundation insulated at floor joist with rigid foam.
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Vented crawlspace foundation insulated under floor joists with rigid foam.

Vented crawlspace foundation insulated under floor joists with rigid foam.
Video:

Wallingford Passive House | Blower Door Test

Video:

Wallingford Passive House | Foundation Details

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Water intrusion

Water intrusion
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Water-proof materials cover the exterior side of crawlspace windows in a crawlspace retrofit, while foil-faced rigid foams seals and insulates the inside face of the openings

Water-proof materials cover the exterior side of crawlspace windows in a crawlspace retrofit, while foil-faced rigid foams seals and insulates the inside face of the openings
Video:

Wet Floodproofing

Video:

What Type of Connection is Critical in Creating a Continuous Path Differing Loads?

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When filling a water heater tank, open the cold water valve (on left) to begin filling the tank and turn on one or two faucets for hot water (right), allowing air to escape from the tank.

When filling a water heater tank, open the cold water valve (on left) to begin filling the tank and turn on one or two faucets for hot water (right), allowing air to escape from the tank.
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When using a theatrical fog machine to detect duct leakage, point the fog stream toward the outer edge of the test fan opening to avoid fouling the fan motor and pressure taps

When using a theatrical fog machine to detect duct leakage, point the fog stream toward the outer edge of the test fan opening to avoid fouling the fan motor and pressure taps