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

290 Chapter Ten
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(a) Plan view of rectangular column form
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(b) Isometric view of square column form
FIGURE 10-2 Column sheathing of plywood with vertical wood battens.
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Tables for Determining the Maximum Span Length of
Plyform Sheathing
Table 10-2 gives the maximum span lengths using Eqs. (10-7) to (10-10)
for Class I Plyform with short-duration load, less than 7 days. The values
are shown for single span, two spans, and multiple spans applications.
The maximum span lengths for the Plyform sheathing shown in Table 10-2
applies to conditions where the panels are installed in the vertical direction;
therefore, the panels are placed in the weak direction for transferring
the concrete pressure horizontally between vertical wood battens.
The span length is the maximum permissible horizontal distance
between the vertical battens that are used to support the panels.
Table 10-3 gives the maximum span lengths using Eqs. (10-7) to
(10-10) for Class I Plyform with short-duration load, less than 7 days.
The values are shown for single span, two spans, and multiple spans
applications. The maximum span lengths for the Plyform sheathing
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