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

306 Chapter Ten
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The bracket has an eccentric action that securely holds the formwork.
The cornerlock is used at outside corners to secure the ends of
the walers. It slips into place with its handle perpendicular to the wale.
Only two nails are needed for attachment while barbed plates grip the
side of the 2 × 4 s for positive nonslip action. The locking handle has a
cam action, drawing the wales together at true right angles. No special
tools are needed for either installation or stripping.
Modular Panel Column Forms
Modular panel forms provide several ways to form columns of various
shapes and sizes. Outside corners and panels or fillers can be combined
to form square or rectangular columns. Generally modular
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panels provide a fast and more accurate column form than job-built
forms. Figure 10-10 shows a column form erected with modular panels.
The form consists of four panels that are fastened together at each
corner. Wedge bolts are used to secure the corners of the forms. Column
hinges are used to allow the panels to swing open for quick and
easy stripping of the forms after the concrete has been placed. A column
lifting bracket may be attached to the corners of the forms for
positioning of the column form. Form liners can be combined with
the column forms for special architectural finishes. Figure 10-11
shows the details of the connections.
FIGURE 10-10 Modular panels for column forms. (Source: Symons Corporation)
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