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| Polyvinyl chloride pipe (pvc)
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A rigid white or cream-colored plastic pipe used in non-pressure systems, such as drainage, waste, and vent systems. |
| Pond
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Incompletely drained roof surface. |
| Ponding
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(1) Accumulation of water that doesn't ever completely drain off a surface, which is caused by not having a proper slope or having depression in the surface. (2) To cure concrete by covering the surface with water. |
| Pony trowel
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Small, motor driven, power trowel, which can be used to finish concrete. |
| Pop rivet
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Rivet, used to fasten two parts together, which consists of a metal sleeve with a flange on one end and a center stem, which fits into the sleeve. The stem is broadened at the end so that it forces itself against the end of the sleeve. When the sleeve and stem are put into the hole that has been drilled through both pieces, the sleeve flange is even with the outside of the hole. A riveting tool grabs hold of the stem protruding out if the flanged end of the sleeve, while it is holding the sleeve in the hole, and then pulls the stem. The pulling force on the stem creates pressure on the sleeve, causing it to collapse and expand against the surface around the hole. The pieces are held tightly between the flange on one side and the expanded sleeve end on the other. The stem "pops" off, inside the sleeve, during the pulling process. |
| Pop riveter
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Tool which is used to install pop rivets. |
| Pop-up assembly
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The drain mechanism of a faucet installed on a lavatory. The drain stopper "pops" up and down,. |
| Pop-up drain
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Type of drain assembly for lavatory and bath. When a lavatory lift rod or bath overflow plate lever is lifted, the pop-up drain closes so the lavatory or tub retains water. |
| Popcorn
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(1) Decorative acoustic ceiling, spray on texture, consisting of vermiculite in a bonding agent. (2) Asphalt paving mix consisting primarily of 3Ú4 inch aggregate. |
| Popcorn surface texture
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A coarse surface texture of SPF considered unacceptable for coatings. |
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