26 Chapter 2
sketch can be used in many ways. Another example of where to use a sketch is to show a field change
that must be made. No matter how well a project is planned, field changes may sometimes need to be
made, and a sketch will often go a long way to helping the builder visualize the designer’s intention or the
construction techniques to be used. Sketches may include dimensions, symbols, and other information
needed to convey your idea of the required change to someone else (such as the project supervisor or
project chief).
Erection drawings, or erection diagrams, indicate the location and position of the various members
in the finished structure. Erection drawings are especially useful to builders performing the erection in
the field. The information erection drawings show includes supplying the approximate weight of heavy
pieces, the number of pieces, and other helpful data.
Framing drawings are necessary to show the layouts and provide other relevant information about
the various framing components. These include floor joists, trusses, beam locations, and other structural
elements. Framing layouts are drawn to scale but don’t normally get into the details of each stud loca-
tion in the walls, because framing contractors are required to follow certain rules and regulations to as-
sure that the structure meets the required building-code specifications.
Figure 2.8A Drawing showing the details for a restaurant waiter station.