Formwork for Concrete Structures by R.L.Peurifoy and G.D- By EasyEngineering.net

198 Chapter Eight
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FIGURE 8-1 Concrete footing and foundation wall.
FIGURE 8-2 All-wood form panels for concrete footings.
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for major walls. Job-built or patented form panels may be used. Panels
2 ft wide, in lengths that are multiples of 2 ft, up to 8 ft, will permit
the use of 4- by 8-ft sheets of Plyform without waste. It may be desirable
to provide some odd-length panels for use on walls whose
lengths are not multiples of 2 ft.
Figure 8-2 shows views of a job-built panel that uses ¾ 1 × 4-in.
Plyform for the facing and 2 × 4 S4S lumber for the plates and studs.
It will be noted that the edges of the Plyform are flush with the exterior
surfaces of the two end studs. However, the top and bottom
edges of the plywood extend ¹⁄8 in. above and below the exterior top
and bottom surfaces of the 2 × 4 plates. This will permit fast and easy
placing of spreader-type form ties through the wall and the forms.
Example 8-1
Design the forms for a 4-ft-high foundation wall using the panel
forms shown in Figure 8-2. The foundation wall will be formed by
stacking two of the form panels in the vertical direction, shown as
follows.
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