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PVC or CPVC

Poly Vinyl Chloride-A type of white or light gray plastic pipe sometimes used for water supply lines and waste pipe.

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Quarry Tile

A man-made or machine-made clay tile used to finish a floor or wall. Generally 6" X 6" X 1/4" thick. A large clay tile used for finished flooring.

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Punch list

A list of discrepancies that need to be corrected by the contractor.

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Purlin

Horizontal member in a roof supporting common rafters, such as at the break in a gambrel roof. Also, horizontal structural member perpendicular to main beams in a flat roof.

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Punch out

- To inspect and make a discrepancy list.

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Property survey

A survey to determine the boundaries of your property. The cost depends on the complexity of the survey.

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Pump mix

Special concrete that will be used in a concrete pump. Generally, the mix has smaller rock aggregate than regular mix.

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Quarry

An open excavation in the earth from which building stone is removed.

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Putty

A type of dough used in sealing glass in the sash, filling small holes and crevices in wood, and for similar purposes.

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Proportional Limit

The upper limit at which stress is proportional to strain.

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Raceway

An enclosed channel designed to carry wires and cables.

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Radiant Heat

Heat transferred by radiation.

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R-Value

The numerical value used to indicate the resistance to the flow of heat.

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Radiant heating

A method of heating, usually consisting of a forced hot water system with pipes placed in the floor, wall, or ceiling. Also electrically heated panels.

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Rabbet-

A rectangular longitudinal groove cut in the corner edge of a board or plank.

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R factor or value

A measure of a materials resistance to the passage of heat. New home walls are usually insulated with 6" of batt insulation with an R value of R-21, and a ceiling insulation of R-49.

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Quartersawing

Sawing lumber so the hard annual rings are nearly perpendicular to the surface.

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Racking

Forcing out of plumb of structural components, usually by wind, seismic stress or thermal expansion or contraction.

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R Value

- A measure of insulation. A measure of a materials resistance to the passage of heat. The higher the R value, the more insulating "power" it has. For example, typical new home's walls are usually insulated with 6" of batt insulation with an R value of R-21, and a ceiling insulation of R-49.