Column designed to support a concentrated load. Pier columns are made of steel, steel reinforced concrete or wood. Alternately, a structure extending out into the water which is supported by numerous columns providing access to water or vessels.
Pier block
A concrete block used to support foundation members such as posts, beams, girders and joist.
Pier footing
Foundation footing of a column.
Piezo switch
The electronic switch the bather uses to control the whirlpool and optional heater. This switch, based upon the piezo-electric effect, generates a voltage when pressure is applied to it.
Pig iron
Crude iron as it comes from the blast furnace, which is eventually refined into wrought iron, steel, or ingot iron.
Piggyback breaker
Circuit breaker which protects two lightly loaded electrical circuits.
Piggyback loan
Loan, with participation by two or more lenders, in the financing of a single mortgage. Alternately, a combination of a construction loan with a permanent loan commitment.
Pigment
(1) Coloring matter, often in the form of an insoluble powder, which is mixed with oil, water, etc. to make paint. (2) Any coloring matter in the cells or tissues of plants or animals.
Pigtail
The electrical cord or wire that has a plug on the end which, when plug into an electrical appliance, brings power to it.
Pigtail splice
Electrical, insulated wire whose ends are spliced and twisted together to connect new and old wiring.
