Forms for forming concrete ceiling and roof

Details Forms for forming concrete ceiling and roof Forms for forming concrete ceiling and roof

E - Fixed Constructions

04

G

72/89

E04G 11/40 (2006.01) E04G 11/46 (2006.01)

Patent

CA 1064724

ABSTRACT OF THE DISCLOSURE A concrete form which is particularly suited for casting-in-place concrete structures, such as a building, comprises a plurality of metallic form members that are interconnected so as to define a planar form surface having a plurality of spaced, parallel elongated depressions extend- ing across the entire length of the form. The resulting con- crete structure is generally planar having a relatively thin planar surface which is reinforced by unitary, spaced, parallel beams formed by said depressions. The resulting structure is of comparable strength to a thicker slab of concrete, requires less concrete, and provides spacing in-between the parallel beams for the ducting of utility lines. In a modification, the depressions may also include frangible mandrels which may be readily punched out of the concrete structure to enable the ducting of utility lines transverse to the beams of concrete.

271694

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