146 CHAPTER THIRTEEN
FIGURE 13.2.Typical Board Feet.FIGURE 13.3.Floor Framing.13–3 Floor Framing
In beginning a wood framing quantity takeoff, the first
portion estimated is the floor framing. As shown in Fig-
ure 13.3, the floor framing generally consists of a girder,
sill, floor joist, joist headers, sheathing, and subflooring.
The first step in the estimate is to determine the grade
(quality) of lumber required and to check the specifica-
tions for any special requirements. This information is
then noted on the workup sheets.
Girders. When the building is of a width greater than that
which the floor joists can span, a beam of some type is
required. A built-up wood member, referred to as a girder,is
often used. The sizes of the pieces used to build up the girder
must be listed, and the length of the girder must be noted. If
the span becomes very long, a flitch beam may be required.
This type of beam consists of a steel plate that is “sandwiched”
between two pieces of framing lumber. In addition, many mills
have developed engineered wood beams that have shapes with
webs and flanges that can accommodate large spans and loads.FIGURE 13.1.Board Measures, Example.