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Summary: Building dictionary to explain building jargon and terminology from A - Z.
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Building dictionary for the letter P - Page 9
Pick dressing
The rough dressing of hard, quarried stone with a heavy pick or wedge-shaped hammer.
Pickaxe
See pick
Picked finish
A surface finish for stonemasonry in which the surface is covered with small pits made by striking it perpendicularly with a pick or chisel.
Picket
A sharpened or pointed stake, post, or pale, usually used as fencing.
Picket fence
A fence consisting of vertical piles, often sharpened at the upper end, supported by horizontal rails.
Pickled
A metal surface that has been treated with strong oxidizing agents to remove scale and provide a tough oxide film.
Pickling
Slang for the preservative treatment of wood, metals, and piping systems.
Picture plane
The plane on which rays are projected when making a perspective drawing.
Picture window
A large window, usually a fixed sheet of plate or insulating glass.
Pier
(1) A short column to support a concentrated load. (2) Isolated foundation member of plain or reinforced concrete.
Pigeonhole
A small compartment for holding papers or small objects, usually one of an adjoining series.
Pigment
A coloring matter, usually in the form of an insoluble fine powder, dispersed in a liquid vehicle to make paint.
Pilaster
A column built within a wall, usually projecting beyond the wall.
Pile
A slender timber, concrete, or steel structural element, driven, jetted, or otherwise embedded on end in the ground for the purpose of supporting a load.
Pile driver
A machine for driving piles, usually by repeated blows, from a free-falling or driven hammer. A pile driver consists of a framework for holding and guiding the pile, a hammer, and a mobile plant to provide power.
Pile foundation
The system of piles, and pile caps, that transfers structural loads to bearing soils or bedrock.
Pile cap
(1) A structural member placed on, and usually fastened to, the top of a pile or a group of piles and used to transmit loads into the pile or group of piles and, in the case of a group, to connect them into a bent. Also known as a rider cap or girder. (2) A masonry, timber, or concrete footing resting on a group of piles. (3) A metal cap or helmet temporarily fitted over the head of a precast pile to protect it during driving. Some form of shock-absorbing material is often incorporated.
Pile core
The mandrel used to drive the shell of a cast-in-place concrete pile.
Pile extractor
A machine for loosening piles in the ground by exerting upward striking blows. The actual removal is by a crane.
Pile hammer
A weight which strikes a pile to drive it into the ground. The weight may fall freely or be assisted by steam or air pressure.
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