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Summary: Building dictionary to explain building jargon and terminology from A - Z.
Plate
(1) In framework and formwork for concrete, a flat, horizontal member at the top and/or bottom of studs or posts. If on the ground, a plate is called a mudsill. (2) In structural design, a member, the depth of which is substantially smaller than its length and width. (3) A flat rolled iron or steel product. See also flat plate.
Plate compactor
See plate vibrator.
Plate glass
High-quality glass of the same composition as window glass but usually thicker, up to 30mm, with ground and polished faces, usually used for large areas in a single sheet.
Plate vibrator (plate compactor)
A self propelled mechanical vibrator that is used to compact soil, pavement underlayment materials, or pavement.
Plate-type tread
A stair tread fabricated from metal plate and/or floor plate. The riser may be integral.
Platform
(1) A floor or surface raised above the adjacent level. (2) A landing in a stairway. (3) A working space for persons, elevated above the surrounding floor or ground level such as a balcony or platform for the operation of machinery or equipment.
Platform framing
A framing system in which the vertical members are only a single story high, with each finished floor acting as a platform upon which the succeeding floor is constructed.
Plenum
(1) A closed chamber used to distribute or collect warmed or cooled air in a forced air heating/cooling system. (2) The space between the suspended ceiling and the floor above.
Pliers
A pincer-like hand tool with opposing jaws for gripping, cutting and bending.
Plinth
(1) A block or slab supporting a column or pedestal. (2) The base course of an external masonry wall when of different shape from the masonry in the wall proper. (3) The base of a monument or statue often with inscription.
Plot
(1) A measured and defined area of land. (2) A ground plan of a building and adjacent land.
Plug
(1) A wood peg driven into a wall for support of a fastener. (2) A stopper for a drain opening. (3) A male-threaded fitting used to seal the end of a pipe or fitting. (4) A fixture for connection of electric wires to an outlet socket. (5) A fibrous or resinous material used to fill a hole and close a surface. (6) Material that stops or seals the discharge line of a channel or pipe.
Plug cutter
A small bit used to cut a hole to receive a plug. A plug cutter is used to conceal recessed screwheads in hardwood floors.
Plumb
Vertical, or to make vertical.
Plumb bob
A cone-shaped metal weight, hung from a string, used to establish a vertical line or as a sighting reference to a surveyor's transit.
Plumb cut
A vertical cut, as in the cuts in a rafter at the top ridge where it meets the ridge plate.
Plumb level
A level that is set in a horizontal position by placing it at a right angle to a plumb line.
Plumb line
The cord or line that supports a plumb bob.
Plumb rule
A board or metal rule, fitted with one or more leveling bubbles, used to establish horizontal and vertical lines.
Plumbing
(1) The work or practice of installing in buildings the pipes, fixtures and other apparatus required to bring in the water supplies and to remove water-borne wastes. (2) The process of setting a structure or object truly vertical.
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