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| Stable mortgage
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Mortgage loan instrument that combines fixed and adjustable rates in the same loan. The rate applied to the loan is a blend of a fixed rate and a rate that varies according to an index. The loan is a creation of General Electric Capital Mortgage Service, Inc. and FNMA. |
| Stack
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(1) Vertical piping. (2) Chimney or vertical vent. |
| Stack bond
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Pattern of laying brick so that each course of stretchers is directly lined up with the adjacent courses so that all vertical joints are in line. |
| Stack cutting
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Cutting several stacked pieces of material at one time. |
| Stack effect
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A condition resulting from the rise of heated air, which creates positive pressure near the top of the building and negative pressure toward the bottom. Stack effect pressures have been known to overpower mechanical ventilation systems, disrupting proper circulation and contributing to the infiltration and stagnation of pollutants. |
| Stack loss
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Sensible and latent heat contained in combustion gases and vapor emitted to the atmosphere. |
| Stack 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. |
| Stack venting
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Fixture drains connected directly to a vent stack in a building drainage system rather than connected to the header that is connected to the stack. |
| Stacked window
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Several casement, hopper, awning, etc. windows that are combined in one large glass area as a design feature and to provide more adequate lighting. |
| Stacking
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The ability of hot water to form layers of different temperatures in the tank stratification. |
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