What are the steps involved in using a self-etch primer?
What will be an ideal response?
To use a self-etch primer, follow these basic steps:
| 1. | Sand metal thoroughly. Remove all visible scale or rust. |
| 2. | Clean the surface with wax-and-grease remover and wipe dry. |
| 3. | Spray on a full wet coat of self-etch primer to any exposed bare metal. See Figure 25-10. |
| 4. | Apply an undercoat (primer or primer-surfacer) or sealer. If a self-etching primer-filler is used, this step might not be necessary. |
| 5. | Once the undercoat refinish system is dry and sanded, wipe with a tack cloth. The surface is ready for the colorcoat. |
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During the heating season, the vapor pressure of the inside air in a typical dwelling in the northern United States is
A) lower than the outside air. B) the same as the outside air. C) greater than the outside air.
In which situations are bridging channels required in a non-load-bearing cold-formed steel wall, such as a partition wall?
What will be an ideal response?
The chronic form of mastitis is a more serious economic problem than the acute form
Indicate whether the statement is true or false.
____________________ specifications often result in lower construction costs because the bidder has more freedom to select materials and methods
Fill in the blank(s) with correct word