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

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Design of Wood Members for Formwork 149
Horizontal reaction at bottom of brace = H
= 1,406 lb
The axial compression load in the brace is 2,343 lb and the
unbraced length is 10 ft. Table 5-5 shows that many wood members
are adequate to resist this load. Each brace must be securely
attached at the top and bottom.
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Design of Forms for a Concrete Slab
The procedure for designing a floor slab is similar to the procedure for
designing wall forms. For a slab, joists perform the same function as
the studs for a wall—they support the plywood sheathing. The stringers
for a slab form support the joists, just as the wales support the
studs in a wall form. The shores support the stringers for a slab form,
whereas the form ties provide support for the wales in a wall form.
The use of the equations and principles developed previously will
be illustrated by designing the forms for a concrete slab (Figure 5-18).
FIGURE 5-18
Allowable span lengths and components of a slab form.
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