word "penny". Table 1-4 lists the kinds and
material that is to be fastened, the need for greater
quantities of nails required for building frame
holding power, the desire for a better finished
structures.
appearance, and limitations on the number of
fasteners that can be used. Screws can also be
1-21. SCREWS
withdrawn easily without damage to the material.
Wood screws are usually made of unhardened steel
The use of screws instead of nails may be
but some
dictated by a number of factors, including the type of
TABLE 1-4. Wire Nails - Kinds and Quantities Required
*Wood shingles vary in width; asphalt are usually 8 inches wide. Regardless of width 1000 shingles are the
equivalent of 1000 pieces 4 inches wide.
1-22
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