Showing results 201 - 300 of 4973
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A drainage plane is created behind lap siding by installing furring strips on the exterior walls over house wrap which is overlapped and taped at all seams to serve as an air and water barrier.
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A dry hydrant is a pipe a homeowner can have installed in a natural water source on their rural property to provide easy access to the water by firefighting crews.
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A drywell, shown here used for downspout catchment, can also be used to receive water from a French drain.
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A duct leakage test is performed on a ducted heat pump system using a duct tester (blower fan) and a digital manometer.
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A ducted central return brings air from central return registers back to the air handler through insulated, air-sealed ducts
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A ducted minisplit heat pump is hidden in the ceiling of this centrally located room with short duct runs to the registers located on each wall of the room.
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A ductless heat pump is hidden behind a wall outcropping above the hallway ceiling.
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A FIRM will identify specific SFHAs (colored and hatched areas) and localized BFEs (wavy black lines)
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A flanged window unit is installed with straps that fasten to the interior surfaces of the plywood extension box; furring strips on each side of the window will be attached after the flanged window is installed and flashed
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A flat plate solar hot water system heat potable water in a glass covered collector that sits on the roof.
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A flexible membrane was installed across the floor joists to prevent air movement between the floor joists in this multifamily 1-hr partition wall assembly
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A floor cavity between the first and second floor can provide a conditioned space for HVAC ducts if the rim joists are insulated and air sealed, if sufficient space is available, and if open-web floor joists are used
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A flow grid is inserted into the filter grille/slot to directly measure airflow.
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A foam gasket is installed along the top plates before installing drywall as an air-sealing step to help achieve a quieter, draft-free home.
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A foaming cleaner is used to clean the coils inside this ductless indoor unit; a mini-split bib surrounds the unit to contain overspray and drips
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A foaming sprayer and mini-split bib are required to properly clean this ductless wall-mounted indoor unit
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A French drain contains a perforated drain pipe wrapped in rock and landscape fabric.
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A fresh air inlet is ducted to the return side of the home’s central air handler; a motorized damper and electronic controls help balance the flow of fresh incoming air with controlled exhaust to meet ventilation requirements
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A fuel tank elevated above the design flood elevation on a platform in a high velocity flow area.
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A fuel tank is strapped onto a concrete slab at the top of compacted fill above the DFE.
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A fuel tank should be anchored with ground anchors designed for site conditions to maintain secure connection to its base in a flood or earthquake
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A gable end failure due to improper bracing caused collapse of most of the trusses on this roof under hurricane force wind conditions.
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A green strip is a type of fuel break planted with less flammable vegetation; e.g., crested wheatgrass.
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A ground source heat pump with an open-loop piping system using vertical injection and recharge
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A ground-source heat pump has the same components as a standard air-to-air heat pump except that the liquid-to-refrigerant heat exchanger coil is located inside rather than outside
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A ground-source heat pump used a fluid flowing through pipe loops to draw heat from or discharge heat the ground to heat or cool the indoor space.
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A ground-source heat pump with a closed-loop horizontal “Slinky™ “piping arrangement
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A gut rehab that includes drywall removal provides the opportunity to thoroughly insulate the walls.
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A heat pump clothes dryer is a type of condensing clothes dryer that uses heat pump technology to efficiently dry clothes
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A heat pump water heater has a small heat pump located on top of the tank which extracts heat from the surrounding air to create hot water.
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A high-efficiency gas boiler provides hot water to the faucets, to radiant heating loops in the basement floor, and to a hydro-coil for a central air heating system.
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A high-efficiency heat pump is installed in a closet within this home’s conditioned space.
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A home is tested at two points for enclosure air leakage
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A Kalamazoo homeowner reduced wintertime chill, condensation, and snowblower noise by installing high-performance interior storm windows
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A large bead of caulk is installed on the interior surface of the wall top and bottom plates to provide an air sealing gasket between the framing and the dry wall.
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A layer of pea gravel or crushed stone, 4 inches thick and sloped 5%, provides a pest-resistant ground break around the perimeter of a slab foundation
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A layer of pea gravel or crushed stone, 4 inches thick and sloped 5%, provides a pest-resistant ground break around the perimeter of a basement foundation
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A layer of rigid foam is sandwiched between two layers of 2x8 lumber in this insulated header over a window.
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A liquid-applied water barrier covers the walls, serving as a drainage plane, air and vapor barrier, and secondary window flashing beneath the rigid foam that will be installed next.
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A low-sloped shed roof with the thermal boundary located at either a) the flat ceiling with a vented attic or b) the roof line for an unvented attic
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A manometer is used to measure pressure differentials between indoors and outdoors when testing whole-house air leakage.
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A masonry chimney is reconstructed to withstand seismic forces by adding an insert to the existing firebox
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A masonry chimney is reconstructed to withstand seismic forces by completely retrofitting the firebox and chimney using light-frame construction on the top of the foundation
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A masonry chimney is reconstructed to withstand seismic forces by maintaining the current firebox but replacing the chimney section with a metal flue and light-weight chimney enclosure.
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A masonry chimney is shortened and capped at roof level to reduce its chances of detaching in high winds or earthquakes; the fireplace can no longer be used.
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A mesh plastic rainscreen product separates the coated OSB from the siding, providing a drainage space and ventilation gap.
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A metal storm panel is installed in a track permanently mounted above and below the window frame and secured with wing nuts to studs mounted on the track.
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A method for preventing waterproofing issues at the intersection of a concrete column, concrete slab, and concrete pier.
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A method for preventing waterproofing issues at the intersection of a concrete slab and a rock anchor.
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A method to ensure waterproofing continuity across the elevator pit of a multistory multifamily building.
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A mini-split air-conditioning system can be a highly effective low-energy approach to provide cooling to one designated zone in the house
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A modern single-inlet direct evaporative cooler draws outside air through an 8- to 12-inch media filter
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A moisture meter verifies that the moisture of the framing is below the recommended 18%.
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A molded plastic drainage board rainscreen allows vertical drainage while providing uniform support for the siding and resisting compression from screws and nails.
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A natural gas 94% efficiency tankless hot water heater provides endless hot water.
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A new high-performance window will be installed in the rough opening of this existing home
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A nitrogen pressure test was completed on this ductless mini-split heat pump using a digital manifold gauge.
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A nylon draw band and tensioning tool are used to secure the inner coil of the pre-insulated flexible duct
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A nylon draw band and tensioning tool are used to secure the inner liner of the pre-insulated flexible duct
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A paint-on flashing is used around the windows and doors for seamless water protection.
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A paint-on waterproofing covers the exterior and tops of the concrete block foundation walls and piers to block moisture moving up through the concrete, while foil-faced R-13 insulation lines the inside surface of the exterior walls.
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A passive air inlet is one approach to providing makeup air when operating an exhaust-only ventilation system
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A passive flow hood is used to measure the flow rate of air that passes through a ceiling-mounted exhaust fan
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A patio and wall constructed of noncombustible concrete, stone, or brick helps to deflect heat and protect the deck and house from approaching wildfires.
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A permanent awning prevents snow and overflowing ice dams from causing damage to HVAC equipment below.
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A permeable ground surface of crushed stone and vegetation helps control runoff on this small lot in the often rainy Pacific Northwest.
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A piece of siding is used as sill extension and to provide slope in the opening for the window, which is deeper because exterior rigid foam has been added
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A pitot tube can be used to measure velocity pressure in a duct; at least twelve measurements are taken across the duct and velocity pressure is converted to velocity to calculate airflow
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A plastic fiber drainage mat rainscreen provides uniform support for the siding and allows moisture to flow horizontally and diagonally in addition to vertically.
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A plastic mesh rain screen is installed over the rigid foam to provide an air gap behind the exterior cladding allowing for drainage and drying.
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A portable CO monitor is used to test for ambient CO near a ventless combustion fireplace
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A portable power meter shows the power usage of equipment; e.g., this laptop is drawing 12 watts while idle
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A powered flow hood is used to measure outside air flowing into the inlet terminal of a whole-house ventilation system
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A professional tree survey should be made prior to construction to assess the health and usefulness of each tree surrounding the future home and to determine which trees on a building site should be preserved.
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A properly sized cold climate heat pump can meet 100% of a home’s heating load in nearly any location in the United States
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A properly sized high-efficiency heat pump is located in conditioned space in a closet inside the home.
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A push button operates the on-demand hot water circulation pump in this master bathroom.
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A raised wood pier foundation can raise the subfloor above the design flood elevation.
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A rater will turn off the HVAC fan before starting the duct leakage or blower door test.
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A refrigerator is secured to the wall by use of an angle bracket with lag bolts, expansion bolts and metal screws
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A resilient home with storm shutters, a sump pump that drains to a french drain, rainwater collection, solar thermal and PV, and raised garden beds.
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A resilient multifamily building in Puerto Rico constructed of concrete on a raised slab foundation with a hip roof design for wind resistance and deep overhangs and permanent awnings to keep sun and rain off windows.
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A reversible window fan can operate via thermostatic or remote control and can selectively exhaust air or bring in outdoor air
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A rigid air barrier of non-paper-faced gypsum board is installed before the bathtub is installed and all seams are caulked
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A roof drain is installed in an existing flat roof retrofitted with above-deck rigid foam insulation that is integrated with new air and water control layers