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

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260 Chapter Nine
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Jahn System for Wall Forms
This system of forming walls involves the use of plywood panels,
wales, strongbacks, form ties, and the patented Jahn brackets for
attaching form members. The panel thickness, size, and spacing of
frame lumber, and tie strength are designed corresponding to the
pressure for each particular job. Figure 9-26 illustrates typical accessories
for attaching studs, wales, ties, and strongbacks.
FIGURE 9-26
Corporation)
Clamping and locking devices for wall forms. (Source: Dayton Superior
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