fully adhered: A term used to describe a membrane that is glued to the substrate without penetrating the membrane.
function: the action for which an item, component or system is specially fitted or used, or for which an item, component or system exists; to be in action or perform a task.
functional: performing, or able to perform, a function.
functional drainage: the emptying of a plumbing fixture in a reasonable amount of time without overflow when another fixture is drained simultaneously.
functional flow: a reasonable flow of water supply at the highest and farthest fixture from the building main when another fixture is operated simultaneously.
further evaluation: a degree of examination beyond that of a typical and customary, non-intrusive physical examination.
fusible link: a form of fixed-temperature heat-detecting device sometimes used to restrain the operation of an electrical or mechanical control until a certain temperature is reached, usually signifying a fire.
gable: The end of a building, as distinguished from the front or rear. Also, the triangular end of an exterior wall from the level of the eaves to the ridge of a double-sloped roof.
gambrel roof: A type of roof whose slope is broken by an obtuse angle so that the lower slope is steeper than the upper slope; a double-sloped roof having two pitches.
garbage: the animal or vegetable waste resulting from preparation or consumption of food.
gas sorption: Devices used to reduce levels of airborne gaseous compounds by passing the air through materials that extract the gases. The performance of solid sorbents is dependent on the airflow rate, concentration of the pollutants, presence of other gases or vapors, and other factors.
girder: A main horizontal beam made of steel, reinforced steel, or wood upon which floor joists rest and used to support other structural members or concentrated loads at isolated points along its length.
grab bars: vertical or horizontal handholds above the height of the ladder for the user’s safe transition to a landing.
grease: animal fat, vegetable shortening or oil used in preparing food or resulting from cooking.
ground-fault circuit interrupter (GFCI): a device intended for the protection of personnel that functions to de-energize a circuit.
grounded: connected to the earth or to some conducting body that serves in place of the earth.
grounded, effectively: intentionally connected to the earth through a ground connection or connections of sufficiently low impedance, and having sufficient current-carrying capacity to prevent the buildup of voltages that might otherwise result in undue hazards to connected equipment or to persons.
grounding electrode: a device that establishes an electrical connection to the earth.
habitable space:
hearth: the floor within a fireplace.
hearth extension: non-combustible material in front of and at the sides of a fireplace opening.
heat-welded: Also referred to as heat-seaming, it is the process of joining and sealing overlapping thermoplastic membrane edges with heat.
heated slab: slab-on-grade construction in which the heating elements are placed within or under the slab.
HEPA: High efficiency particulate arrestance (filters).
hip: The external angle formed by the meeting of two sloping sides of a roof.
hood: a device that directs and captures grease-laden vapors and gases from a cooking appliance.
humidistat: a device used to automatically control relative humidity.
HVAC: Heating, ventilation, and air-conditioning system.
hypersensitivity diseases: Diseases characterized by allergic responses to animal antigens. The hypersensitivity diseases most clearly associated with indoor air quality are asthma, rhinitis, and hypersensitivity pneumonitis. Hypersensitivity pneumonitis is a rare but serious disease that involves progressive lung damage as long as there is exposure to the causative agent.
IAC2: International Association of Certified Indoor Air Consultants
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