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| Texture patch repair kit
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| Thatch
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The layer of dead stems that builds up under many lawn grasses. Thatch should be removed periodically to promote better water and nutrient penetration into the soil. |
| Thatch roof
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A roof covering made with straw, palms, reeds or other natural growths that are bound together in order to shed water. |
| Theodolite
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A surveying tool used in precision work. |
| Therm
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Measurement unit of heat equal to 100,000 BTU. |
| Thermal
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Relating to heat. |
| Thermal (energy) storage
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A technology that lowers the amount of electricity needed for comfort conditioning during utility peak load periods. A buildings thermal energy storage system might, for example, use off-peak power to make ice or to chill water at night, later using the ice or chilled water in a power saving process for cooling during the day. |
| Thermal balance point
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The point or outdoor temperature where the heating capacity of a heat pump matches the heating requirements of a building. |
| Thermal barrier
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Material used in conjunction with polyurethane foam that is designed to inhibit the rise in temperature of the foam during a fire in order to delay the foam's involvement in the fire. Time ratings for thermal barriers should exceed 15 minutes. |
| Thermal coefficient of expansion
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A factor specifying the expansion and contraction of a material as temperature rises and falls. |
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