Static molds – In situ construction engineering type or building type-mold... – Forming building structure
Patent
1992-10-28
1995-03-28
Mackey, James P.
Static molds
In situ construction engineering type or building type-mold...
Forming building structure
52 215, 249 65, 249112, 249183, E04G 1104, B28B 732
Patent
active
054009995
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
This invention relates generally to building construction, and more particularly to construction utilizing a reusable, inflatable form upon which there is applied a cementitious material to form a structure which may be a building or a part thereof.
In the past building construction, utilizing inflatable forms over which a cementitious material is applied, had predominantly been of circular cross section, domed or of a generally spherical configurations. These limitations were imposed partially to take advantage of the structural integrity of the shapes, and also because of the ease of construction of the inflatable form and the resultant structure. Variations in dimensional integrity were offset by the lowered construction costs; however, the avoidance of conventional construction building designs was dictated by the unavailability of inflatable forms which could maintain straight sided walls, where desired. When inflation pressures were required to support a heavy load of the cementitious material, the wall and/or ceiling areas would bow. For multistoried buildings domed construction inhibited the effectiveness of a straight structure to define both the ceiling of the lower story and the floor of the upper story.
Public acceptance of igloo type structures, curved outer walls of a building and other shapes that diverge from the conventional square or rectangular configurations has been dismal. However, there is a dire need for the economical, quick, efficient, structurally sound type of construction afforded by structures using inflatable forms in order to accomodate the world-wide population shifts and the attendant increased housing and industrial construction requirements. None of the prior art proposals have enabled the production of conventionally shaped buildings with the inflatable form technique, because of the failure of the industry to produce low cost forms of conventionally acceptable design with structural and dimensional integrity.
SUMMARY OF THE INVENTION
The invention comprises a novel, inflatable form that maintains dimensional integrity in a construction milieu to allow the production of buildings and/or modules having straight, substantially orthogonally related surfaces, thereby overcoming the deficiencies of the prior art.
Accordingly, it is a primary object of this invention to produce an inflatable form for a building of cementitious material applied over the form, the form having straight sides, where desired, that maintain their dimensional stability under pressures required to support the said material.
It is another object of this invention to provide a novel, inflatable construction form that utilizes a modular construction for the form, while the form itself can form a module of a structure to enable versatility in building design.
It is still another object of this invention to provide an inflatable, reuseable form for building construction that allows for the preplacement of reinforcement, electricity, plumbing and communication equipment, etc. within the walls of the structure to provide for economical access for the installation of the devices to be attached thereto.
It is a further object of this invention to provide an inflatable, reusable form for modular construction of a building that enables the joinder of separate modules to form separate rooms using doors to communicate one room with another wherein the door frames or frames of other communicating openings can be integrated into the resultant structure during the application of the cementitious material that forms the walls of the rooms.
It is a still further object of this invention to provide an inflatable, reusable module for application of a cementitious material thereto to provide the walls and ceiling of the resultant structure, wherein window and door frames can be included in the construction by their application to the form prior to the application of said cementitious material.
Another object of this invention involves the provision of a novel, inflatable modular form for b
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