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

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Forms for Walls 249
FIGURE 9-15
Form panel
showing screw-on
coil ties in place
prior to installation
of reinforcing steel
and erection of
opposite form.
(Source: Dayton
Superior
Corporation)
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Strut coil ties are available in the range of 4,000 to 25,000 lb safe working
load capacity. When ordering these ties, it is necessary to give the
quantity, type, safe working load, bolt diameter, tie length, wall thickness,
and setback. For example, 3,000 pieces, heavy-duty two-strut, 9,000-lb
capacity, ¾-in. diameter bolt, 12 in. long for a 14-in. wall, 1-in. setback.
Taper Ties
As illustrated in Figure 9-16, these ties consist of a tapered rod that is
threaded at each end. A feed-through installation permits forms on
both sides to be in place before ties are installed. The tapered tie system
FIGURE 9-16
Taper tie. (Source: Dayton Superior Corporation)
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