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| Sanitary fitting
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Fitting that joins the assorted pipes in a drain, waste, and vent system, designed to allow solid material to pass through without clogging. |
| Sanitary sewer
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House drain that carries waste away from the house to a septic system or a municipal sewer system. |
| Sap
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All the fluids in a tree. |
| Saponification
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The process in which a fatty acid is neutralized with an alkali or base to form a soap. |
| Sapwood
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Lighter colored wood that is found in the outer part of a tree, next to the bark. It contains living, dead and dying cells and lacks resistance to decay. |
| Sash
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Frame surrounding a door or window to block adverse weather. It may be made of wood, metal, or other material. The frame may be fixed or moveable. |
| Sash balance
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Counterbalance for the weight of the window sash, which is usually accomplished by the use of sash weights, making it easier to open and close or to remain in a certain position. |
| Sash bar
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Also referred to as muntins, these bars divide window openings. |
| Sash block
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Masonry block that holds a window or doorframe by use of a 3Ú4 inch groove. |
| Sash cord
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