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

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Forms for Beams and Floor Slabs 339
FIGURE 11-5 Forms for a drop panel.
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Figure 11-5 illustrates a method of constructing forms for a drop
panel to provide a greater thickness for the concrete slab adjacent to a
column. The decking may be made of plywood, assembled in two
equal parts, with a joint along section line A-A.
The forms for drop panels are erected and rigidly braced first,
then the forms for the main slabs are erected. Using the method illustrated,
the forms for the columns are stripped first, followed by the
forms for the drop panels, then the forms for the balance of the slab.
The forms may be erected to permit some panels to remain in position,
supported by shores, as long as such support is required.
Figure 11-6 illustrates a method of constructing forms for the
main slab. Two-way diagonal braces, extending from the bottoms to
the tops of adjacent shores, should be installed to provide adequate
strength and rigidity.
FIGURE 11-6 Forms for a flat-slab concrete fl oor.
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