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250 Cards in this Set
- Front
- Back
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erosion
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a combination of processes in which materials of the earth's surface are loosened, dissolved or worn away, and transported from once place to another by natural agents (such as water, wind or gravity)
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sedimentation
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the addition of soils to water bodies by natural and human-related activities; it decreases water quality and accelerates the aging process of lakes, rivers and streams
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community
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an interacting population of individuals living in a specific area
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development footprint
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the area on the project site that has been impacted by any development activity; hardscape, access roads, parking lots, non-building facilities and building structure are all included in the development footprint
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ecosystem
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a basic unit of nature that includes a community of organisms and their nonliving environment linked by biological, chemical, and physical process
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endangered species
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an animal or plant species that is in danger of becoming extinct throughout all or a significant portion of its range due to harmful human activities or environmental factors
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previously developed sites
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those that previously contianed buildings, roadways, parking lots, or were graded or altered by direct human activities
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threatened species
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an animal or plant species that is likely to become endangered within the foreseeable future
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wetland vegetation
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plants that require saturated soils to survive, as well as certain tree and other plant species that can tolerate prolonged wet soil conditions
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Conventional Irrigation
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refers to the most common irrigation system used in the region where the building is located. A common conventional irrigation system uses pressure to deliver water and distributes it through sprinkler heads above the ground.
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building density
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the floor area of the building divided by the total area of the site (square feet per acre)
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greenfields
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sites that have not been previously developed or built on, and which could support open space, habitat or agriculture
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Drip Irrigation
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high-efficiency irrigation method in which water is delivered at low pressure through buried mains and sub-mains. From the sub-mains, water is distributed to the soil from a network of perforated tubes or emitters. It is a type of Micro-irrigation.
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property area
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the total area within the legal property boundaries of a site and encompasses all areas of the site including constructed areas and non-constructed areas
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site area
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same as property area
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Graywater
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defined by the UPC as "untreated household wastewater which has not come into contact with toilet waste. Includes used water from bathtubs, showers, bathroom wash basins, and water from clothes-washer and laundry tubs. It shall not include wastewater from kitchen sinks or dishwashers."
The IPC defines it as "wastewater discharge from lavatories, bathtubs, showers, clothes washers, and laundry sinks." Some states and local authorities allow kitchen sink wastewater to be included. Other differences with the UPC and IPC definitions can probably be found in state and local codes. Project teams should comply with these definitions as established by the authority having jurisdiction in their areas. |
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square footage
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the total area of a building in square feet of all rooms including corridors, elevators, stairwells and shaft spaces
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pedestrian access
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implies that pedestrians can walk to the services without being blocked by walls, freeways or other barriers
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bioremediation
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the use of microorganisms and vegetation to remove contaminants from water and soils; it is generally a form of in-situ remediation, and can be a viable alternative to landfilling or incineration
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UPC
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Uniform Plumbing Code
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CERCLA
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The Comprehensive Environmental Response, Compensation, and Liability Act, commonly known as Superfund. It addresses abandoned or historical waste sites and contamination. It was enacted in 1980 to create a tax on the chemical and petroleum industries and provided federal authority to respond to releases of hazardous substances.
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ex-situ remediation
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the removal of contaminated soil and groundwater that occurs in another location, typically a treatment facility; pump-and-treat technology that uses carbon filters and incineration is one example; more advanced methods include chemical treatment or biological reactors
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IPC
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International Plumbing Code
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in-situ remediation
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treatment of contaminants in place using technologies such as injection wells or reactive trenches; these methods utilize the natural hydraulic gradient of groundwater and usually require only minimal disturbance of the site
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RCRA
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the Resource Conservation and Recovery Act which focuses on active and future facilities; it was enacted in 1976 to give the EPA authority to control hazardous wastes from cradle to grave, including generation, transportation, treatment, storage, and disposal
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Landscape Area
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equal to the total site area less the building footprint, paved surfaces, water bodies, patios, etc.
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remediation
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the process of cleaning up a contaminated site by physical, chemical or biological means; remediation processes are typically applied to contaminated soil and groundwater
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risk assessment
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a methodology used to analyze for potential health effects caused by contaminants in the environment; information from the risk assessment is used to determine cleanup levels
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Micro-Irrigation
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involves irrigation systems with small sprinklers and micro-jets or drippers designed to apply small volumes of water. The sprinklers and micro-jets are installed within a few centimeters of the ground, while drippers are laid on or below grade.
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site assessment
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an evaluation of above-ground (including facilities) and subsurface characteristics, including the geology and hydrology of the site, to determine if a release has occurred, as well as the extent and concentration of the release; info generated during a site assessment is used to support remedial action decisions
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mass transit
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a publicly or privately operated transportation service that provides transportation, for the general public, to multiple fixed stops on a scheduled basis; mass transit vehicles are typically capable of serving 10 or more occupants, such as buses, trolleys, light rail, etc.
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Potable Water
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water suitable for drinking and supplied from wells or municipal water systems.
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public transportation
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bus, rail or other transportation service for the general public operating on a regular, continual basis that is publicly or privately owned
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Aquatic Systems
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ecologically designed treatment systems that utilize a diverse community of biological organisms (e.g. bacteria, plants, fish) to treat wastewater to advanced levels.
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carpool
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an arrangement in which two or more people share a vehicle for transportation
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alternative fuel vehicles
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vehicles that use low-polluting, non-gasoline fuels such as electricity, hydrogen, propane or compressed natural gas, liquid natural gas, methanol, and ethanol; efficient gas-electric hybrid vehicles are included in this group for LEED purposes
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hybrid vehicles
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vehicles that use a gasoline engine to drive an electric generator and use the electric generator and/or storage batteries to power electric motors that drive the vehicles wheels
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Blackwater
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does not have a single definition that is accepted nationwide. Wastewater from toilets and urinals is, however, always considered blackwater
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preferred parking
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parking spots that are closest to the main entrance of the project, exclusive of spaces designated for handicapped, or to parking passes provided at a discounted price
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building footprint
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the area on a project site that is used by the building structure and is defined by the perimeter of the building plan; parking lots, landscapes, and other non-building facilities are not included in the building footprint
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Wastewater
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from kitchen sinks (perhaps differentiated by the use of a garbage disposal), showers, or bathtubs may be considered blackwater by state or local codes. Project teams should comply with the blackwater definition as established by the authority having jurisdiction in their areas.
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local zoning requirements
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local government regulations imposed to promote orderly development of private lands and to prevent land use conflicts
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Composting Toilet Systems
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dry plumbing fixtures that contain and treat human waste via mircobiological processes
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native (indigenous) plants
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plants adapted to a given area during a defined time period and are not invasive; in America, the term refers to plants growing in a region prior to the time of settlement by people of European descent
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adapted (introduced) plants
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both indigenous and non-indigenous species or strains that are characteristically adaptable, aggressive, have a high reproductive capacity and tend to overrun the ecosystems in which they inhabit; collectively they are one of the great threats to biodiversity and ecosystem stability
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On-Site Wastewater Treatment
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uses localized treatment systems to transport, store, treat and dispose of wastewater volumes generated on the project site.
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open space area
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defined by local zoning requirements; if local zoning requirements do not clearly define open space, it is defined for the purposes of LEED calculations as the property area minus the development footprint; and it must be vegetated and pervious, with exceptions only as noted in the credit requirements section; for projects located in urban areas that earn SS Credit 2, open space also includes non-vehicular, pedestrian-oriented hardscape spaces
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previously developed
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those sites that previously contained buildings, roadways, parking lots, or were graded or altered by direct human activities
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impervious surface
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promote runoff of precipitation volumes instead of infiltration into the subsurface; the imperviousness or degree of runoff potential can be estimated for different surface materials
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Non-potable water
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water that is not suitable for human consumption without treatment that meets or exceeds EPA drinking water standards
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stormwater runoff
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consists of water volumes that are created during precipitation events and flow over surfaces into sewer systems or receiving waters; all precipitation waters that leave project site boundaries on the surface are considered to be stormwater runoff volumes
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TSS
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Total Suspended Solids
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Process Water
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water used for industrial processes and building systems such as cooling towers, boilers and chillers
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albedo
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synonymous with solar reflectance
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emissivity
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the ratio of the radiation emitted by a surface to the radiation emitted by a black body at the same temperature
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Tertiary Treatment
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the highest form of wastewater treatment that includes the removal of nutrients, organic and solid material, along with biological or chemical polishing (generally to effluent limits of 10 mg/L BOD5 and 10 mg/L TSS).
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heat island effect
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occurs when warmer temperatures are experienced in urban landscapes compared to adjacent rural areas as a result of solar energy retention on constructed surfaces; principal surfaces that contribute to the heat island effect include streets, sidewalks, parking lots, and buildings
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Non-Water-Using Urinal
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this device uses no water, but instead replaces the water flush with a specially designed trap that contains a layer or buoyant liquid that floats above the urine layer, blocking sewer gas and urine odors from the room.
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infrared emittance
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a parameter between 0 and 1 that indicates the ability of a material to shed infrared radiation; the wavelength of this radiant energy is roughly 5 to 40 micrometers; most building materials (including glass) are opaque in this part of the spectrum, and have an emittance of roughly 0.9; materials such as clean, bare metals are the most important exceptions to the 0.9 rule
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non-roof impervious surfaces
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include all surfaces on the site with a perviousness of less than 50%, not including the roof of the building; examples include parking lots, roads, sidewalks, and plazas
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Automatic Fixture Sensors
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motion sensors that automatically turn on/off lavatories, sinks, water closets and urinals. Sensors may be hard wired or battery operated
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open-grid pavement
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defined for LEED purposes as a pavement that is less than 50% impervious and contains vegetation in the open cells
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perviousness
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the percent of the surface area of a paving material that is open and allows moisture to pass through the material and soak into the earth below the paving system
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SRI
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Solar Reflectance Index is a measure of a material's ability to reject solar heat, as shown by a small temperature rise; it is defined so that a standard black (reflectance 0.05, emittance 0.90) is 0 and a standard white (reflectance 0.80, emittance 0.90) is 100
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Metering Controls
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generally manual on/automatic off controls which are used to limit the flow time of water. These types of controls are most commonly installed on lavatory faucets and on showers
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underground parking
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is a "tuck-under" or stacked parking structure that reduces the exposed parking surface area
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solar reflectance
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the ratio of the reflected solar energy to the incoming solar energy over wavelengths of approximately 0.3 to 3.5 micrometers; a reflectance of 100% means that all of the energy striking a reflecting surface is reflected back into the atmosphere and none of tee energy is absorbed by the surface
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Basis of Design (BOD)
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includes design information necessary to accomplish the owner's project requirements, including system descriptions, indoor environmental quality criteria, other pertinent design assumptions (such as weather data), and references to applicable codes, standards, regulations and guidelines.
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angle of maximum candela
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is the direction in which the luminaire emits the greatest luminous intensity
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curfew hours
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locally determined times when greater lighting restrictions are imposed; when no local or regional restrictions are in place, 10:00 PM is regarded as a default curfew time
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Commissioning (Cx)
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process of verifying and documenting that the facility and all of its systems and assemblies are planned, designed, installed, tested, operated, and maintained to meet the Owner's Project Requirements
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FootCandle (fc)
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a unit of illuminance and is equal to one lumen of light falling on a one-square foot area from a one candela light source at a distance of one foot
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light pollution
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waste light from building sites that produces glare, is directed upward to the sky or is directed off the site
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Commissioning Plan
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a document that outlines the organization, schedule, allocation of resources, and documentation requirements of the commissioning process
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outdoor lighting zone definitions
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(developed by IDA for the Model Lighting Ordinance) provide a general description of the site environment/context and basic site lighting criteria
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Commissioning Report
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the document that records the results of the commissioning process, including the as-built performance of the HVAC system and unresolved issues.
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Commissioning Specification
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the contract document that details the commissioning requirements of the construction contractors.
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Commissioning Team
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includes those people responsible for working together to carry out the commissioning process.
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Installation Inspection
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process of inspecting components of the commissioned systems to determine if they are installed properly and ready for systems performance testing
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Owner's Project Requirements (OPR)
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a written document that details the functional requirements of a project and the expectations of how it will be used and operated.
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Systems Performance Testing
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the process of determining the ability of the commissioned systems to perform in accordance with the owner's project requirements, basis of design, and construction documents.
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ChloroFluorocarbons (CFCs)
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hydrocarbons that deplete the stratospheric ozone layer
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HydrochloroFluorocarbons (HCFCs)
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refrigerants that cause significantly less depletion of the stratospheric ozone layer compared to CFCs
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Refrigerants
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the working fluids of refrigeration cycles. They absorb heat from a reservoir at low temperatures and reject heat at higher temperatures.
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Baseline Building Performance
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the annual energy cost for a building design intended for use as a baseline for rating above standard design, as defined in ASHRAE 90.1-2004 Informative Appendix G
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Daylighting
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the controlled admission of natural light into a space through glazing with the intent of reducing or eliminating electric lighting. By utilizing solar light, daylighting creates a stimulating and productive environment for building occupants.
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Energy Star Rating
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rating a buildings earns using the energy star portfolio manager to compare building energy performance to similar buildings in similar climates. A score of 50 represents average building performance.
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Landfill
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a waste disposal site for the deposit of solid waste from human activites
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Interior Lighting Power Allowance
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the maximum light power in watts allowed for the interior of a building
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Lighting Power Density (LPD)
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the installed lighting power, per unit area
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Percentage Improvement
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the percent energy cost savings for the Proposed Building Performance versus the Baseline Building Performance
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Prior Condition
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the state the project space was in at the time it was selected. Removing the demolition work from the project scope by making it the building owner's responsibility defeats the objective of this credit
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Proposed Building Performance
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the annual energy cost calculated for a proposed design, as defined in ASHRAE 90.1-2004 Informative Appendix G.
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Rated Power
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the nameplate power on a piece of equipment. It represents the capacity of the unit and is the maximum a unit will draw.
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Prior Condition Area
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the total area of finished ceilings, finished floors, full height walls and demountable partitions, interior doors and built-in case goods that existed when the project area was selected; exterior windows and exterior doors are not considered.
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Receptacle Load
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refers to all equipment that is plugged into the electrical system, from office equipment to refrigerators
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Completed Design Area
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the total area of finished ceilings, finished floors, full height walls and demountable partitions, interior doors and built-in case goods in the space when the project is completed; exterior windows and exterior doors are not considered
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Biomass
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plant material such as trees, grasses and crops that can be converted to heat energy to produce electricity.
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Environmental Attributes of Green Power
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includes emission reduction benefits that result from green power being used instead of conventional power sources
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Net Metering
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a metering and billing arrangement that allows on-site generators to send excess electricity flows to the regional power grid. These electricity flows offset a portion of the electricity flows drawn from the grid.
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Retained Components
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are those portions of the finished ceilings, finished floors, full height walls and demountable partitions, interior doors and built-in case goods that existed in the prior condition that remained in the completed design.
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Renewable Energy Certificates (RECs)
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a representation of the environmental attributes of green power, and are sold separately from the electrons that make up the electricity. They allow the purchase of green power even when the electrons are not purchased.
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Interior Non-Structural Components Reuse
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determined by dividing the area of retained components by the larger of the area of the prior condition or the area of the completed design.
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Halons
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substances used in fire suppression systems and fire extinguishers in buildings. These substances deplete the stratopheric ozone layer
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Energy Conservation Measures (ECMs)
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installations of equipment or systems, or modifications of equipment or systems, for the purpose of reducing energy use and/or costs.
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Recycling
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the collection, reprocessing, marketing and use of materials that were diverted or recovered from the solid waste stream.
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Construction and Demolition (C&D) Debris
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waste and recyclables generated from construction, renovation, and demolition or deconstruction of preexisting structures. Land clearing debris including soil, vegetation, rocks, etc. are not to be included.
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Reuse
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a strategy to return materials to active use in the same or a related capacity.
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Tipping Fees
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fees charged by a landfill for disposal of waste volumes. The fee is typically quoted for one ton of waste
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Chain-of-Custody
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a tracking procedure to document the status of a product from the point of harvest or extraction to the ultimate consumer end use.
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Salvaged or Reused Materials
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construction materials recovered from existing buildings or construction sites and reused in other buildings. Common salvaged materials include structural beams and posts, flooring, doors, cabinetry, brick and decorative items.
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Assembly Recycled Content
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the percentages of post-consumer and pre-consumer content. The determination is made by dividing the weight of the recycled content by the overall weight of the assembly.
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Post-Consumer Waste
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material generated by households or by commercial, industrial and institutional facilities in their role as end-users of the product which can no longer be used for its intended purpose. This includes returns of materials from the distribution chain (Source: ISO 14021). Examples of this category include construction and demolition debris, materials collected through curbside and drop-off recycling programs, broken pallets (if from a pallet refurbishing company, not a pallet making company), discarded products (e.g. furniture, cabinetry and decking) and urban maintenance waste (leaves, grass clippings, tree trimmings, etc.)
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Hydrofluorocarbons (HFCs)
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are refrigerants that do not deplete the stratospheric ozone layer; however, some HFCs have high global warming potential and, thus, are not environmentally benign
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Pre-consumer Content
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previously referred to as Post-industrial content.
-material diverted from the waste stream during the manufacturing process. Excluded is reutilization of materials such as rework, regrind or scrap generated in a process and capable of being reclaimed within the same process that generated it. (ISO 14021). Examples: planer shavings, plytrim, sawdust, chips, bagasse, sunflower seed hulls, walnut shells, culls, trimmed materials, print overruns, over-issue publications, and obsolete inventories |
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Regionally Manufactured Materials
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must be assembled as a finished product within a 500 mile radius of the project site. Assembly, as used for this credit definition, does not include on-site assembly, erection or installation of finished components, as in structural steel, miscellaneous iron or systems furniture.
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Regionally Extracted Materials
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must have their source as a raw material from within a 500-mile radius of the project site.
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Rapidly Renewable
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materials are considered to be an agricultural product, both fiber and animal, that takes 10 years or less to grow or raise, and to harvest in an ongoing and sustainable fashion.
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Sustainable Forestry
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the practice of managing forest resources to meet the long-term forest product needs of humans while maintaining the biodiversity of forested landscapes. The primary goal is to restore, enhance and sustain a full range of forest values - economic, social and ecological.
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Vendor
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the company that supplies wood products to building project contractors or subcontractors for on-site installation.
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Indoor Air Quality
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the nature of air inside the space that affects the health and well-being of building occupants.
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Mechanical Ventilation
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provided by mechanical powered equipment, such as motor-driven fans and blowers, but not by devices such as wind-driven turbine ventilators and mechanically operated windows. (ASHRAE 62.1-2004)
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Natural Ventilation
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provided by thermal, wind or diffusion effects through doors, windows or other intentional openings in the building (ASHRAE 62.1-2004)
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Ventilation
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process of supplying and removing air to and from a space for the purpose of controlling air contaminant levels, humidity or temperature within the space.
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Mixed- Mode Ventilation
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a ventilation strategy that combines natural ventilation with mechanical ventilation allowing the building to be ventilated either mechanically or naturally and at times both mechanically and naturally simultaneously.
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Environmental Tobacco Smoke (ETS)
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or secondhand smoke, consists of airborne particles emitted from the burning end of cigarettes, pipes, and cigars, and exhaled by smokers. These particles contain about 4,000 different compounds, up to 40 of which are known to cause cancer.
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CO2
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carbon dioxide
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PPM
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Parts per Million
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Air conditioning
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the process of treating air to meet the requirements of a conditioned space by controlling its temperature, humidity, cleanliness and distribution. (ASHRAE 62.1-2004)
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Breathing Zone
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the region within an occupied space between planes 3 and 6 ft. above the floor and more than 2 ft. from walls or fixed air-conditioning equipment.
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Conditioned Space
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that part of the building that is heated or cooled, or both, for the comfort of occupants (ASHRAE 62.1-2004)
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Contaminant
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an unwanted airborne constituent that may reduce acceptability of the air.
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Exfiltration
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uncontrolled outward air leakage from conditioned spaces through unintentional openings in ceilings, floors and walls to unconditioned spaces or the outdoors caused by pressure differences across these openings due to wind, inside-outside temperature differences (stack effect), and imbalances between supply and exhaust airflow rates.
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Exhaust Air
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the air removed from a space and discharged to outside the building by means or mechanical or natural ventilation systems.
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Infiltration
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uncontrolled inward air leakage from conditioned spaces through unintentional openings in ceilings, floors and walls from unconditioned spaces or the outdoors caused by the same presure difference that induce exfiltration
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Makeup Air
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any combination of outdoor and transfer air intended to replace exhaust air and exfiltration.
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Outdoor Air
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the ambient air that enters a building through a ventilation system, through intentional openings for natural ventilation, or by infiltration. (ASHRAE 62.1-2004)
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Recirculated Air
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the air removed from a space and reused as supply air (ASHRAE 62.1-20040
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Return Air
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the air removed from a space to be then recirculated or exhausted. (ASHRAE 62.1-2004)
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Supply Air
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the air delivered by mechanical or natural ventilation to a space, composed of any combination of outdoor air, recirculated air, or transfer air. (ASHRAE 62.1-2004)
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Constrution IAQ Management Plan
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a document specific to a building project that outlines measures to minimize contamination in the building during construction and to flush the building of contaminants prior to occupancy.
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HVAC Systems
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include heating, ventilating, and air-conditioning systems used to provide thermal comfort and ventilation for building interiors
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Adhesive
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any substance that is used to bond one surface to another surface by attachment. Includes adhesive bonding primers, adhesive primers, adhesive primers for plastics, and any other primer.
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Aerosol Adhesive
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an adhesive packaged as an aerosol product in which the spray mechanism is permanently housed in a non-refillable can designed for hand held application without the need for ancillary hoses or spray equipment. Includes special purpose spray adhesives, mist spray adhesives and web spray adhesives.
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Indoor Adhesive, Sealant and/or Sealant Primer
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an adhesive or sealant product applied on site, inside of the building's weatherproofing systems.
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Porous Sealant
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a substance used as a sealant on porous materials. Porous materials have tiny openings, often microscopic, in which fluid may be absorbed or discharged. Such materials include, but are not limited to, wood, fabric, paper, corrugated paperboard and plastic foam.
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Primer
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material applied to a substrate to improve adhesion of subsequently applied adhesive
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Anti-Corrosive Paints
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coatings formulated and recommended for use in preventing the corrosion for ferrous metal substrates.
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Paint
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a liquid, liquefiable or mastic composition that is converted to a solid protective, decorative, or functional adherent film after application as a thin layer. These coatings are intended for on-site application to interior or exterior surfaces or residential, commercial, institutional or industrial buildings.
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Indoor Paint or Coating Product
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a paint or coating product applied on-site inside of the building's weatherproofing system.
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Flat Coatings
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coatings that register a gloss of less than 15 on an 85 degree meter or less than 5 on a 60 degree meter
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Non-Flat Coatings
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coatings that register a gloss of 5 or greater on a 60 degree meter and a gloss of 15 or greater on an 85 degree meter
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VOC's
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(Volatile Organic Compounds)- carbon compounds that participate in atmospheric photochemical reactions (excluding carbon monoxide, carbon dioxide, carbonic acid, metallic carbides and carbonates, and ammonium carbonate). The compounds vaporize (become a gas) at normal room temperatures.
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Indoor Carpet Systems
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carpet, carpet adhesive, or carpet cushion product installed on-site inside of the buildings weatherproofing system
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Agrifiber Board
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composite panel product derived from recovered agricultural waste fiber from sources including, but not limited to, cereal straw, sugarcane bagasse, sunflower husk, walnut shells, coconut husks, and agricultural prunings. The raw fibers are processed and mixed with resins to produce panel products with characteristics similar to those derived from wood fiber. The following conditions describe which products must comply with the requirements:
1. The product is inside of the building's waterproofing system 2.Composite components used in assemblies are to be included (e.g. door cores, panel substrates, etc.) 3. The product is part of the base building systems |
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Composite Wood
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a product consisting of wood or plant particles or fibers bonded together by a synthetic resin or binder. Examples: plywood, particle board, OSB, MDF, composite door cores. For the purposes of this credit, the following conditions describe which products must comply with the requirements:
1. The product is inside of the buildings waterproofing system 2. Composite wood components used in assemblies are included (e.g. door cores, panel substrates, plywood sections of I beams) 3. The product is part of the base building systems |
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Formaldehyde
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a naturally occurring VOC found in small amounts in animals and plants, but is carcinogenic and an irritant to most people when present in high concentrations - causing headaches, dizziness, mental impairment, and other symptoms. When present in the air at levels above .1 ppm parts of air, it can cause watery eyes, burning sensations in the eyes, nose and throat; nausea; coughing; chest tightness; wheezing; skin rashes; and asthmatic and allergic reactions.
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Indoor Composite Wood or Agrifiber
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as a composite wood or agrifiber product installed on-site inside of the buildings weatherproofing system.
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Laminate Adhesive
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used in wood/agrifiber products (veneered panels, composite wood products contained in engineered lumber, door assemblies, etc.)
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Urea Formaldehyde
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a combination of urea and formaldehyde that is used in some glues and may emit formaldehyde at room temperature.
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Phenol Formaldehyde
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which off-gasses only at high temperature, is used for exterior products, although many of those products are suitable for interior applications
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Shared (group) Multi- Occupant Spaces
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include conference rooms, classrooms and other indoor spaces used as a place of congregation for presentations, training, etc. Individuals using these spaces share the lighting and temperature controls and they should have, at a minimum, a separate zone with accessible thermostat and an air-flow control.
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Individual Occupant Spaces
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typically private offices and open office plans with workstations
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Non-Occupied Spaces
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Include all rooms used by maintenance personnel that are not open for use by occupants. Included in this category are janitorial, storage and equipment rooms, and closets.
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Non-Regularly Occupied Spaces
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include corridors, hallways, lobbies, break rooms, copy rooms, storage rooms, kitchens, restrooms, stairwells, etc.
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Relative Humidity
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the ratio of partial density of water vapor in the air to the saturation density of water vapor at the same temperature and the same total pressure. (ASHRAE 55-2004)
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ESC
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Erosion and Sedimentation Control Plan
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EPA
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Environmental Protection Agency
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CGP
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Construction General Permit
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NPDES
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National Pollutant Discharge Elimination System
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SWPPP
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Storm Water Pollution Prevention Plan
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LEED
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Leadership in Energy & Environmental Design
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FEMA
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Federal Emergency Management Agency
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CFR
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Code of Federal Regulations
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USGBC
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United States Green Building Council
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ASTM
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American Society for Testing and Materials
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OSWER
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Office of Solid Waste and Emergency Response
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FTE
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Full Time Equivalent
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ZEV
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Zero Emission Vehicles
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ACEEE
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American Council for an Energy Efficient Economy
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GHG
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Greenhouse Gases
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Thermal Comfort
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a condition of mind experienced by building occupants expressing satisfaction with the thermal environment.
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Comfort Criteria
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specific original design conditions that shall at minimum include temperature (air, radiant and surface), humidity and air speed as well as outdoor temperature design conditions, outdoor humidity design conditions, clothing (seasonal) and activity expected. (ASHRAE 55-2004)
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Glazing Factor
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the ratio of interior illuminance at a given point on a given plane (usually the work plane) to the exterior illuminance under known overcast sky conditions. LEED uses a simplified approach for its credit compliance calculations. The variables used to determine the daylight factor the floor area, window area, window geometry, visible transmittance (Tvis) and window height).
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Daylighting
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the controlled admission of natural light into a space through glazing with the intent of reducing of eliminating electric lighting. By utilizing solar light, daylighting creates a stimulating and productive environment for building occupants.
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Regularly Occupied Spaces
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areas where workers are seated or standing as they work inside a building; in residential applications it refers to living and family rooms.
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Visiable Light Transmittance (Tvis)
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the ratio of total transmitted light to total incident light. In other words, it is the amount of visible spectrum (380-780 nanometers) light passing through a glazing surface divided by the amount of light striking the glazing surface. A higher TVIS value indicates that a greater amount of visible spectrum incident light is passing through the glazing.
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Direct Line of Sight to Perimeter Vision Glazing
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the approach used to determine the calculated area of regularly occupied areas with direct line of sight to perimeter vision glazing. The area determination includes full height partitions and other fixed construction prior to installation of furniture.
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Horizontal View at 42 Inches
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the approach used to confirm that the direct line of sight to perimeter vision glazing remains available from a seated position. It used section drawings that include the installed furniture to make the determination.
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Vision Glazing
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that portion of exterior windows above 2'-6" and below 7'-6" that permits a view to the outside of the project space.
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ASHRAE
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American Society of Heating, Refrigerating, and AIr-conditioning Engineers
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SCAQMD
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South Coast Air Quality Management District
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SMACNA
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Sheet Metal & Air Conditioning Contrators National Association
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CIBSE
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Chartered Institution of Building Services Engineers
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FSC
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Forestry Stewardship Council
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ISO
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International Organization for Standards
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CRS
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Center for Resource Solutions
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IPMVP
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International Performance Measurement & Verification Protocol
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CBECS
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Commercial Buildings Energy Consumption Survey
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NBI
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New Buildings Institute
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SRI
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Solar Refective Index
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BMPs
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Best Management Practices
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ACEEE
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American Council for Energy Efficient Economy
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CARB
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California Air Resources Board
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ZEV
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Zero Emission Vehicles
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FTE
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Full Time Equivalent
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FEMA
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Federal Emergency Management Agency
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USDA
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US Department of Agriculture
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TARP
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Technology Acceptance Reciprocity Partnership
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BMP
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Best Management Practices
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ANSI
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American National Standards Institute
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IESNA
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Illuminating Engineering Society of North America
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LPD
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Lighting Power Density
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TWA
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Total Water Applied
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TWPA
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Total Potable Water Applied
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EPAct
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Energy Policy Act of 1992
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M&V
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Measurement & Verification
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CxA
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Commissioning Authority
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ODSs
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Ozone Depleting Substances
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ODPs
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Ozone Depleting Potentials
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HVAC+R
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Heating, Ventilating, Air Conditioning, and Refrigerating
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DOE
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Department of Energy
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GWPs
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Global-Warming Potentials
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ECB
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Energy Cost Budget
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EIA
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Energy Information Administration
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EER
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Energy Efficiency Ratio
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COP
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Coefficient of Performance
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SHGC
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Solar Heat Gain Coefficient
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CBECS
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Commercial Buildings Energy Consumption Survey
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REC
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Renewable Energy Cost
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ECMs
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Energy Conservation Measures
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CRS
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Center for Resource Solutions
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TRCs
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Tradable Renewable Certificates
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NAHB
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National Association of Home Builders
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CSI
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Construction Specifications Institute
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FSC
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Forest Stewardship Council
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COC
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Chain of Custody
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FOIC
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Furnished by the Owner, Installed by the Contractor
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ETS
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Environment Tobacco Smoke
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BAS
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Building Automation System
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VAV
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Variable Air Volume
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DCV
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Demand Controlled Ventilation
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AM
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Applications Manual
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MERV
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Minimum Efficiency Reporting Value
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IAQ
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Indoor Air Quality
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PSE
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Particle Size Removal Efficiency
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CRI
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Carpet & Rug Institute
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DHS
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Department of Health Services
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MDF
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Medium Density Fiberboard
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PMV
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Predicted Mean Vote
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