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| Waste & overflow
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Drain assembly for a bathtub. The outlet at the top removes the overflow water during tub filling and the drain at the bottom removes wastewater when the tub is drained. |
| Waste arm
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Drain extension pipe, usually to extend a sink drain into a wall. |
| Waste container
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| Waste plug
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Drain stopper on a bathtub drain. |
| Waste shoe
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Bathtub drain assembly. |
| Waste stack
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A vertical pipe in a plumbing system that carries the discharge from any fixture. |
| Waste vent
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(1) Soil or waste stack that extends through the roof of a building. (2) Soil or waste stack that is above the highest horizontal drain emptying into the stack. |
| Wasting asset
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Natural resources, the value of which is decreased because it is subject to depletion through extraction of the valued commodity. |
| Water
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| Water absorption
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The increase in weight of a test specimen expressed as a percentage of its dry weight after being immersed in water for a specified time at a given temperature. |
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