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Although crawlspaces are not recommended in flood-prone areas, they can be designed or retrofitted to greatly increase resistance to flood damage.

Although crawlspaces are not recommended in flood-prone areas, they can be designed or retrofitted to greatly increase resistance to flood damage.
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An alternative design includes strapping the tank to concrete counterweights on opposite sides of the tank.

An alternative design includes strapping the tank to concrete counterweights on opposite sides of the tank.
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An energy recovery ventilator draws in fresh outside air that is filtered and circulated by the central air handler, while stale air from central returns is routed through the ERV to exchange heat before being exhausted outside.

An energy recovery ventilator draws in fresh outside air that is filtered and circulated by the central air handler, while stale air from central returns is routed through the ERV to exchange heat before being exhausted outside.
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An engineered bioswale uses perforated pipe laid in rock and landscape fabric at the bottom of a vegetated trench to direct water away from a site.

An engineered bioswale uses perforated pipe laid in rock and landscape fabric at the bottom of a vegetated trench to direct water away from a site.
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An exterior metal staircase was added to this concrete building for roof access and refuge during tsunamis in Kesennuma, Japan

An exterior metal staircase was added to this concrete building for roof access and refuge during tsunamis in Kesennuma, Japan
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An oil-fired boiler with direct combustion air and exhaust venting

An oil-fired boiler with direct combustion air and exhaust venting
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An underground fuel tank is anchored onto poured-in-place concrete counterweights.

An underground fuel tank is anchored onto poured-in-place concrete counterweights.
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Anchoring a fuel tank to a concrete slab is recommended to avoid displacement if flooding occurs.

Anchoring a fuel tank to a concrete slab to avoid displacement if flooding occurs.
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Anemometers, including the vane style (lower) and hotwire style (upper) are used to measure air velocity to calculate airflow

Anemometers, including the vane style (lower) and hotwire style (upper) are used to measure air velocity to calculate airflow
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Assembled section of fiber board duct

Assembled section of fiber board duct
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Average wet-bulb temperatures across the United States

Average wet-bulb temperatures across the United States
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Backdraft Dampers

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Backflow prevention devices keep water and sewage from entering the home during a flood preventing damage and health and safety issues.

Backflow prevention devices keep water and sewage from entering the home during a flood preventing damage and health and safety issues.
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Backwater Valve Installation

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Base flood elevation and other parameters affected by flood depth.

Base flood elevation and other parameters affected by flood depth.
Case Study:

Baxter Community - High Performance Green Building

Baxter Community - High Performance Green Building
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Because flue temperatures are cool, intake and exhaust ducts on a Category 4 direct-vent sealed-combustion condensing furnace can be made of PVC

Because flue temperatures are cool, intake and exhaust ducts on a Category 4 direct-vent sealed-combustion condensing furnace can be made of PVC
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Berms are compacted earth or gravel ridges that slow the flow of water from rain, riverine flooding, or storm surges in coastal areas.

Berms are compacted earth or gravel ridges that slow the flow of water from rain, riverine flooding, or storm surges in coastal areas.
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Berms, swales, bioswales, ridges, and vegetation all help to control rainwater runoff on residential sites.

Berms, swales, bioswales, ridges, and vegetation all help to control rainwater runoff on residential sites.
Case Study:

Best Practices Case Study: Devoted Builders, LLC, Mediterrtanean Villas, Pasco,WA

Best Practices Case Study: Devoted Builders, LLC, Mediterrtanean Villas, Pasco,WA
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Bioswales or rain gardens filter storm water through vegetation and rock and sand substrate layers.

Bioswales or rain gardens filter storm water through vegetation and rock and sand substrate layers.
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Bracing of timber pile foundations.

Bracing of timber pile foundations.
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Breaking wave pressure distribution against a vertical wall.

Breaking wave pressure distribution against a vertical wall.
Case Study:

Builders Challenge High Performance Builder Spotlight: Ferrier Custom Homes, Dallas, Texas