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

454 Chapter Seventeen
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The removing, hoisting, relocating the deck forms, placing the
reinforcing steel, and installing the electrical and plumbing components
may be performed easily, which permits quick placement of
concrete for a slab.
The hardware and equipment for flying deck form systems may
be purchased or rented on a per-job basis. If desired, technical assistance
is provided by the supplier. The information that follows
describes and illustrates one of the systems that may be purchased
or rented.
Form-Eze Flying Deck Forms
The deck forms supplied by this company are modules consisting of
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two or more parallel steel trusses (with diagonal steel braces between
the trusses) that support steel joists and plywood decking. Deck modules
frequently are supplied in lengths in excess of 100 ft and in
widths of up to 30 ft. The actual sizes of the modules are limited only
by the bay sizes in the structure and the capacity of the crane that will
hoist the modules.
Figure 17-4 illustrates a simple arrangement of three trusses
with steel joists supporting plywood decking and a catwalk with
railing located outside the building slab for use by the workers on
the project.
Three-truss form
(A) Lapped joist (staggered)
(B) Folding leg jacks
(C) 5th leg pick-up
cable
Balance point
Balance
lines
5th leg
Load lines
Folding leg jacks
Lapped joists
(50% full-length
joists)
FIGURE 17-4 Representative members of a flying assembly. (Source: Form-Eze
Systems, Inc.)
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