Showing results 201 - 250 of 1165
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Correctly anchoring an outside propane tank can prevent tank displacement if flooding occurs.
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Covering old asphalt shingles with new shingles can cause substrate irregularities that can interfere with the bonding of the self-seal adhesives in the new shingles.
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CPVC fire sprinkler piping is insulated using the tent method, as described in NFPA 13D.
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Create a cool room to shelter from extreme heat by selecting a room in the basement or on the north or shaded side of the house, air sealing and insulating, providing low-wattage and battery-operated cooling, and reducing interior heat loads.
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Create defensible space against wildfires by limiting fire fuels in the immediate, intermediate, and extended zones around the home
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Create defensible space around the home to protect it from wildfires.
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Critical connections for providing a continuous load path in buildings and storm shelters
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Cross section showing points of reinforcement and attachment to secure the chimney to the roof and ceiling joists.
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Defensible space and ignition resistant building materials saved this home from a wildland fire that destroyed the neighboring home in the foreground
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Dense hedges can encourage cross ventilation (left image) or not (right image) depending on how they are placed relative to windows
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Density, specific heat, and volumetric heat capacity (in metric and in English units) of various construction materials
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Detail for reinforcing a cripple wall to resist earthquake movement by installing anchor bolts and plywood reinforcement.
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Detail of an unvented cathedralized attic showing air-impermeable spray foam insulation plus batt insulation installed on the underside of the roof deck.
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Diaphragm stiffening and corner pile bracing to reduce pile cap rotation for homes built on pile foundations.
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Distribution of roof, wall, and internal pressures on one-story, pile-supported building.
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Double fan window units can have multiple operational modes; most often outdoor air will be brought in at night when outdoor conditions are cooler
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Drainage and back ventilation of wood cladding is provided by ¾ inch furring (1x4).
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Drainage behind stone cladding is provided by “grooved” rigid insulation coupled with a filter fabric.
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Drainage behind wood shingle cladding is provided by a 3/8-inch-thick drainage mat.
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Drifting of snow led to heavy accumulation between the gables which required snow removal to reduce risk of roof collapse
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Drip flashing at the door head and drip flashing with hook at the head help to keep out wind-driven rain.
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Dry wells are underground tanks that store water to percolate or drain slowly to another site or sewer.
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Duct/pipe penetration with metal cap flashing and wood blocking for trim attachment
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Dune erosion caused by the combination of a hurricane and a nor’easter in Ocean City, New Jersey
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Durability concerns on a house continuously sheathed with a proprietary fiber structural panel used as bracing. Photo 1 of 2.
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Durability concerns on a house continuously sheathed with a proprietary fiber structural panel used as bracing. Photo 2 of 2.
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During high wind events, high localized areas of negative pressure (“suction”) occur above roof membranes
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During high wind events, vortices form along the edges of the roof creating areas of localized negative pressure (“suction”) above the roof
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Earth tubes buried in the ground can provide pre-cooling of ventilation air or primary cooling if designed deep and long enough
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Earthquake-actuated automatic gas shutoff valves are installed on the downstream or homeowner’s side of the meter.
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Earthquake-ready home actions include securing cabinets, shelves, and heavy furniture or electronics to walls and preparing utilities for disruptive movement.