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Term Definition
Fire Retardant Treated Lumber. Lumber with applied or pressurized chemical treatment of lumber to retard combustion.  
Fire Retardant Treated Plywood. Plywood with applied or pressurized chemical treatment to retard combustion.  
Fire Retardant. A chemical treatment to rce the ignitability of the treated material; a material or treatment which effects a rction in flammability and in spread of fire.  
Fire Separation Wall. A wall required under the building code to divide two parts of a building as a deterrent to the spread of fire; a fire wall.  
Fire Sprinkler Detector. A water pressure actuated switch that will signal when a sprinkler head has been activated.  
Fire Sprinkler Head. The water spray device that is part of a fire sprinkler system.  
Fire Sprinkler System. An arrangement of water pipes under continuous pressure that will release a water spray through spaced heads that are activated by increased temperature.  
Fire Standpipe. Lines and connections within buildings that provide water source for fire fighting.  
Fire Station. A building housing fire-fighting apparatus, and usually fire-fighters.  
Fire Stop. 1. A projection of brickwork from walls between the joists to prevent fire from traveling between the plaster and the brick wall. 2. Material or member that seals open construction to inhibit spread of fire.  
Fire Stopping. The sealing of contiguous framing cavities or areas to rce the opportunity for rapid spread of fire and smoke; see Fire Blocking.  
Fire Tapping. The taping of gypsumboard joints without subsequent finishing coats. A treatment method used in attic, plenum or mechanical areas where esthetics are not important.  
Fire, Bisque. see Bisque Fire.  
Fire, Glost. see Glost Fire.  
Fire, Single. see Single Fire.  
Firebox. The portion of a fireplace that contains the fire.  
Firebrick. Brick that resist high temperatures and chemical disintegration, used for lining furnaces, fireboxes, and chimneys.  
Firecut. A sloping end cut on a wood beam or joist where it enters a masonry wall, to allow the wood member to rotate out of the wall without prying the wall apart, if the floor or roof structure should burn through in a fire.  
Fireplace. A masonry chamber within a building, to facilitate an open fire, with a flue to carry off smoke and fumes.  
Fireproof Vault. An enclosure or room for the storing of valuables that has been constructed to withstand fire and heat.  
Fireproofing. Material applied to a building element to insulate it against excessive temperatures in case of fire.  
Fire-Trap. A building without proper provision for escape in case of fire.  
Firewall, Brick. see Brick Firewall.  
Firewall. A wall constructed to prevent or slow down the spread of fire.  
Firing Range. 1. The range of firing temperature within which a ceramic composition develops properties which render it commercially useful. 2. A place where one practices the shooting of weapons.  
Firing. The controlled heat treatment of ceramics in a kiln or furnace, during the process of manufacture, to develop the desired properties.  
First Aid Kit. A packet of medical supplies for emergency use.  
Fiscal Year. Financial year; an accounting period of 12 months.  
Fish Eyes. A term used to describe small blemishes occasionally found in lime finish coats; approximately 1/4 inch in diameter, they are caused by lumpy lime.  
Fish Oil. The only animal oil used to any extent in the paint industry; extracted from fish such as sardine, menhaden, and pilchard.  

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