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Today's Terms
Backnailing
Definition:
In roofing, the practice of blind nailing (in addition to hot- mopping) all the plies to a substrate to prevent slippage on slopes of 1-1/2 inch or more for steep asphalt, 1/2 inch or more for coal-tar pitch and dead-level asphalt.
Acute Exposure
Definition:
A single exposure to a toxic substance, which results in severe biological harm or death. Acute exposures are usually characterized as lasting no longer than a day, as compared to longer, continuing exposure over a period of time.
Hardware
Definition:
All of the "metal" fittings that go into the home when it is near completion. For example, door knobs, towel bars, handrail brackets, closet rods, house numbers, door closers, etc. The Interior Trim Carpenter installs the "hardware
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