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

254 Chapter Nine
Downloaded From : www.EasyEngineering.net
wood walers to the plywood sheathing. The loop cone form tie is placed
between two cam-lock brackets, and a 2 × 4 or 2 × 6 horizontal waler is
placed on top of each cam-lock bracket. The vertical strongbacks are
locked in place against the backs of the cam-lock brackets with the stiffback
cams. The stiff-back cam connects to ears on the back of the camlock
bracket to lock the forming system in place. The self-centering plastic
cone form tie is crimped to prevent turning in the concrete wall. It
has high-density polyethylene cones for easy breakback of 1 or 1½ in.
This cam-lock forming system uses readily available materials,
¾- in.-thick plywood sheathing and 2 × 4 or 2 × 6 S4S lumber for horizontal
wales or vertical strongbacks. Plywood panels are predrilled with
¹³⁄16-in. holes to receive the ends of the form ties. As shown in Figure 9-21,
ww.EasyEngineering.n
FIGURE 9-21 Suggested form details for 16-in. tie spacing in each direction.
(Source: Gates & Sons, Inc.)
Downloaded From : www.EasyEngineering.net