Estimating in Building Construction

Wood 161

FIGURE 13.36.Headers.

FIGURE 13.37. 2 Header Construction.

require 2 each 2 headers with a 1/2plywood or 5/16
OSB spacer (Figure 13.37a), and 2 6 walls require 3
each 2 headers with two 1/2plywood or 5/16OSB
spacers (Figure 13.37b).
The header length must also be considered. As shown in
Figure 13.38, the header extends over the top of the studs
and it is wider than the opening. Most specifications and

building codes require that headers for openings 6 feet wide

or less must extend over one stud at each end (Figure 13.38),

and headers for openings over 6 feet must extend over two

studs at each end.

List the number of openings, their width, the number of

headers, their length, and the linear feet and board feet

required.