Static structures (e.g. – buildings) – Intersection of a cast stonelike component – Cast reinforced vertical and horizontal members
Patent
1997-08-27
2000-08-08
Kent, Christopher
Static structures (e.g., buildings)
Intersection of a cast stonelike component
Cast reinforced vertical and horizontal members
52335, 52336, 52326, 249 28, 249 50, E04B 104, E04B 124
Patent
active
060983590
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
This invention relates to a construction system and in particular to floor-forming formwork and to flooring systems and methods. However it will be understood that the invention is also applicable to walling formwork and to walling systems and methods.
The invention has particular but not exclusive application to flooring, to formwork therefor, and to formworking methods and systems for the construction of suspended concrete slab floors in housing, on slopes or in multilevel buildings.
BACKGROUND OF INVENTION
Construction methods are known in which prestressed concrete beams are placed at regular intervals along the supports for a suspended slab. The beams have edges which support planar sheets located therebetween and which constitute the formwork for the slab. Unless the support sheets have considerable thickness and/or strength, the beams are located relatively close to each other to prevent sagging of the support sheets when the concrete is poured and to withstand construction point loadings without failure. Centres of more than 600 mm are not recommended. An example of such a known flooring system is illustrated for comparative purposes in FIGS. 1 and 3.
It is also known in the preparation of concrete floors to locate arched formwork between supports. Australian patents 111529, 147246 and 168002 and my Australian petty patent 653697 illustrate known systems. My earlier system is also illustrated for comparative purposes in FIGS. 2, 4 and 5.
It is known to cast elongate reinforced concrete members in moulds or in a continuous or pseudo-continuous fashion. In one method, the reinforcement means is laid out and thereafter a concrete extruder is passed along the length of the reinforcement means to effectively "coat" the reinforcement means and form the elongate reinforced concrete member.
Integral slab and beam construction systems are also known. U.S. Pat. No. 4,685,264 illustrates one such system.
SUMMARY OF INVENTION
The present invention aims to provide an alternative to known construction systems and methods.
This invention in one aspect resides broadly in a method of constructing a suspended floor, the method including: assembly, each said support assembly supporting the beam-forming formwork assembly suspended therefrom in stable equilibrium.
As used herein the expressions "suspend", "suspending" and "suspended", in relation to the beam-forming formwork assemblies, indicate that the beam-forming formwork assemblies hang from a support assembly.
The beam-forming formwork assemblies can be arranged in any suitable configuration. They could for example radiate outwardly from a hub, or they could be inclined at an angle. However it is preferred that the plurality of beam-forming formwork assemblies are located in substantially parallel alignment.
In a preferred embodiment the support assemblies are substantially cradle-like and have arms converging from a base to define an open neck adapted to receive a beam-forming formwork assembly therethrough for suspended support therefrom.
As used herein the expression "cradle-like" is meant to include supports which are adapted to cradle the beam-forming formwork assemblies and includes supports which are substantially U-shaped in cross-section and includes yoke-like and stirrup-like supports.
The method may also include locating a plurality of floor-forming formwork assemblies between the beam-forming formwork assemblies for support thereon.
The method may further include:
Suitably the beam-forming formwork assemblies include a plurality of beam-forming formwork modules having a channel member constituting a mould for forming a beam, first support means associated with each flange of the channel member for engagement by the support assemblies such that the channel member is suspended therefrom in stable equilibrium, and second support means associated with each flange of the channel member for supporting floor-forming formwork assemblies transversely thereof.
In a preferred embodiment the floor-forming formwork assemblies include a plura
REFERENCES:
patent: 4685264 (1987-08-01), Landis
patent: 4778144 (1988-10-01), Gregory
Kent Christopher
Richardson Yvonne Horton
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