162 CHAPTER THIRTEEN
EXAMPLE 13-16
FIGURE 13.38.Header Example.Header Quantity
No. of Openings Size Header Length Pieces
93 0 3 3 18
12 8 2 11 2
Purchase Quantity
Size Length (lf ) Pieces
2 12 10 6
2 12 8 1
Wall Sheathing. Exterior wall sheathing may be a
fiberboard material soaked with a bituminous material,
insulation board (often urethane insulation covered with
an aluminum reflective coating), waferboard, or plywood
(Figure 13.39). Carefully check the specifications and
working drawings to determine what is required (insula-
tion requirements, thickness). Fiberboard and insulation FIGURE 13.39.Typical Wall Section.