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

266 Chapter Nine
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FIGURE 9-32 Installation of Jahn cornerlock for forming outside corner.
(Source: Dayton Superior Corporation)
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along with the Jahn “C” brackets and snap ties. Normal spacing of
the strongbacks is 8 ft on centers (Figure 9-33).
Figure 9-34 illustrates three alternatives for the attachment of
adjoining upper and lower panels for large wall heights.
Installation of the second lift of plywood is illustrated in
Figure 9-35. The lower plywood is raised into position. The sheet is
nailed to the joint cover wale while the plywood panel is held in place
with a short 2 × 4 spacer block, snap tie, and Jahn “C” bracket. As
additional panels are set, they are nailed to the joint cover wale, securing
them to the previously installed panel with a Jahn plywood
holder. The snap ties, brackets, and wales are installed, working from
the bottom to the top of the panel.
FIGURE 9-33 Installation of strongbacks. (Source: Dayton Superior Corporation)
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