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Section 4 Construction Systems and Supplemental Drawings
windows and other features. Finally, they show
the specifi c materials and fasteners to be used.
Section views that are created specifi cally to
show one feature, such as stairs or a fi replace, are
generally called detail drawings or construction
details. See Chapter 23 for information about
stair details and Chapter 24 for information
about fi replace, chimney, and stove details.
Types of
Building Sections
Different types of building sections are
prepared for different purposes. There are three
basic types of building sections:
• Full building section
• Partial building section
• Wall section
Each type is described more fully in the following
sections.
Full Building Section
A full building section, also called a
cross section, cuts vertically through the entire
structure. A full building section has three
main purposes. First, it shows the relationships
among the various interior spaces. The building
section shown in Figure 21-1 is a full building
section of a two-story house with a basement.
Notice how clearly the layout of the rooms
appears in this section. The second purpose
is to specify overall height relationships and
general materials to be used. Materials are often
detailed in notes, as shown in the fi gure. Full
building sections are drawn at the same scale as
the fl oor plan, usually 1/4″ = 1′-0″.
Full sections are often required to show
foundation information. This is particularly
true for pier foundations and post foundations.
See Figure 21-2. The materials to be used for
the piers or posts and footings, as well as their
spacing, can be shown in a full section.
Figure 21-1. A building section cuts vertically through a structure to show foundation, wall, and roof
construction, as well as materials and the general relationship of spaces or rooms within the home.