US 20050034401 A1
An ultra-lite building system comprising a building constructed with base plates, wall panels composed of plastic core columns and foam surrounding the core columns, a plastic header assembly, plastic and foam joists and plastic or metal studs extending between said foam wall panels.
1. An ultra-lite building construction comprising:
a plurality of base plates operable to be secured to a building foundation, each of said base plates having a plurality of upright generally cylindrical columns;
a plurality of wall panels, each of said wall panels having a core composed of an plurality of generally parallel, hollow, cylindrical, longitudinally extending, columns interconnected by spanning plates and said core being covered with a foam material and an outer skin of a moisture resistant coating, wherein said core columns operably receive, correspondingly dimensioned, said plurality of upright, generally cylindrical, columns of said base plates;
upright studs extending between next adjacent wall panels of said plurality of wall panels and serving to connect with said wall panels and thereby vertically steady said wall panels;
a plurality of header plates having a plurality of generally cylindrical columns extending above and below said header plates, wherein a portion of said cylinders extending below said header plates operably extending into the top of said cylindrical columns of said wall panels;
a plurality of junction modules comprising a generally solid rectangular shape in exterior configuration but hollow interiorly to form a shell and having at least one opening extending into each edge surface thereof and said edge openings being operable to engage with an upwardly extending column of said plurality of header plates and a transverse central opening extending thought the center of said generally rectangular shell;
a plurality of joist beams extending in a generally parallel array between opposing header modules operably connected to said header plates; and
a roof positioned above said joist beams to form a building structure.
2. An ultra-lite building construction as defined in
said cylindrical columns of said base plate are generally circular in cross-section.
3. An ultra-lite building construction as defined in
said core and spanning plates are composed of a plastic material.
4. An ultra-lite building construction as defined in
said core is composed of a sheet metal material.
5. An ultra-lite building construction as defined in
said interconnecting spanning plates have a plurality of embedded rectangular reinforcement metal plates.
6. An ultra-lite building construction as defined in
said embedded rectangular reinforcement metal plates have generally triangular punched through projections for engaging said plastic spanning material.
7. An ultra-lite building construction as defined in
Said outer skin of moisture resistant coating comprises a moisture resistant paper coating.
8. An ultra-lite building construction as defined in
the interior surface of said wall panels being covered with fire retardant drywall.
9. An ultra-lite building construction as defined in
said upright studs are composed of sheet metal and have arcuate edges;
said wall panels having correspond arcuate edges; and
a column inserted between mutually facing arcuate edges of a stud and a wall section for connecting said stud to an edge of said wall panel.
10. An ultra-lite building construction as defined in
a member extending through the center of each of said header modules for connecting said header module to a corresponding arcuate surface of a joist beam.
11. An ultra-lite building construction as defined in
a dome composed of a foam material and being positioned upon an upper surface along the length of each of said joists to provide a flat surface to receive flooring material.
12. An ultra-lite building construction as defined in
said joist is composed from plastic sheet material and being coated with a foam material for structural rigidity.
13. An ultra-lite building construction as defined in
said roof being composed from a plurality of said wall panels connected together at junction locations.
14. An ultra-lite building construction as defined in
a second course of wall panels positioned upon an upper edge of said initial plurality of wall panels and being connected to said junction modules by a header plate with a plurality of generally cylindrical columns extending above and below said header plates and said roof being mounted above said second course of wall panels.
This application claims the benefit of U.S. Provisional Application No. 66/490,527 entitled “Ultra-Lite Building System” filed on Jul. 29, 2003. The Provisional Application is of common inventorship with the subject application and the disclosure of that Provisional Application is incorporated by reference as though set forth at length.
This invention also relates to disclosures in Sutelan U.S. Pat. No. 6,205,728, entitled “Laminated Composite Building Component,” issued on Mar. 27, 2001, and Sutelan U.S. Pat. No. 6,412,243, entitled “Ultra-Lite Modular Composite Building System,” issued on Jul. 2, 2002. The disclosures of these related patents are incorporated by reference into this application as though set forth at length.
1. Field of the Invention
Conventional building construction is a time consuming, resource heavy, and labor intensive process. The materials used in conventional building are quite heavy, costly, and not fire and heat resistant. Since the beginning of the industrial revolution, people have been trying unsuccessfully to minimize on-site labor costs with prefabricated components, such as prefabricated panels. Other than the use of drywall and plywood, today's house is still being built stick by stick just as it was long ago, and requires the labor of many different trades, such as frame building, roofing, siding, etc.
A fault in many of previously known prefabricated building components was an inability to have internal access, which is ordinarily required for the placement of utility lines and overly finished building components tend to be inaccessible. If the pipes and wires are pre-installed within components, splices between components can reduce line efficiency, increase labor, and defeat the purpose of prefabrication. Hence, the ideal building system would utilize components that are light-weight, very strong, easily arranged, with constant and convenient internal access, and made of an approved heat and fire resistant material, with cost-savings both in expedient manufacture and systematic on-site assembly.
2. Description of Related Art
Polymer foam materials, e.g., sheets or blocks of low density expanded polystyrene, polyurethane and the like, have been widely used in the construction industry for purposes of building insulation. Plastic foam in the form of panels or foamed-in-place polyurethane has been used, for example, to provide an insulative wall or roof sheating material, as perimeter insulation for floor slabs, as an insulative core layer sandwiched between structural components such as plywood, wall board or metal, as disclosed in U.S. Pat. No. 3,583,123, or as insulative layers surrounding poured concrete, as for example disclosed in U.S. Pat. No. 5,664,382.
It has also been proposed in the prior art to utilize plastic foam materials in combination with other structural components to prepare structural building panels or blocks which are said to be capable of structural rigidity especially from lateral loads or other stresses applied to them. Examples of such structural components may be found in U.S. Pat. No. 5,638,651 which discloses an interlocking insulated panel having an expanded polystyrene core sandwiched and glued between oriented strand board (OSB) and further containing a pair or metal channels glued to opposite sides of the core and partially embedded in the core. The metal channels are said to impart structural strength to the panel. U.S. Pat. No. 4,903,446 discloses a prestressed plastic foam structural member prepared by forming a grid-work of rope-like or wire tendons maintained in a tension condition within a mold, and encapsulating the grid-work with expandable plastic foam to form a lightweight structural member.
Also, U.S. Pat. No. 4,351,870 discloses a building panel material comprising a centrally disposed convoluted sheet stiffening layer of high strength material, such as metal or plastic, laminated on each side with an adhered sheet of expanded plastic material such that the expanded plastic sheet contacts the convoluted crests and troughs of the centrally disposed sheet. The panel may also contain coatings on the outer foamed plastic surfaces thereof which are of a decorative or weather-proofing nature, as well as combustion-inhibiting layers positioned on one or both sides of one or both expanded plastic sheet layers.
Further, U.S. Pat. No. 5,448,862 discloses a prefabricated formed plastic staircase where vertical slots are provided for the insertion of reinforcing steel rods meant for embedment in concrete beams below the surface to provide stiffening for the overall structure but no assistance to the function loading on the tread surfaces.
U.S. Pat. No. 5,256,222 discloses a lightweight wallboard including expanded siliceous inorganic particles bonded together by an inorganic binder. A wall board of this design may, as an example, have advantageous use in the subject housing system.
Other related structures are disclosed in U.S. Pat. Nos. 4,159,681; 4,241,555; 4,558,550; 4,611,450; and 4,774,794.
In applications such as described above, the expanded plastic material serves two primary roles:
In these applications are the main structural components intended for the primary purpose of supporting or bracing axial loads directly applied to an encapsulated rigid structure, nor is the expanded plastic material by itself intended to, or capable of, supporting high compressive or axial loads applied thereto, or even capable of contributing significantly to the strength of the main structural components which are designed into such systems as the load and stress-bearing components. In the prior art, the general intent of the foam is to provide diaphragm rigidity to a planar configuration from lateral forces, with no active purpose in the support of directly applied longitudinal axial loading in compression. And while such diaphragm rigidity may have been accomplished, the end product results are limited to purposes of rigid building enclosure rather than as the main building structural supporting elements.
For example, consider a steel wire mounted vertically between the plates of a press. The wire will initially resist a certain amount of compressive axial force applied. As more pressure is applied, the wire will strain and begin to buckle and eventually bend or break at the point of compressive tensile failure. Now consider the wire inserted longitudinally at the axis of a cylinder of STYROFOAM™ plastic about the size of a wooden thread spool such that the wire tips are exposed at the base and top of the cylinder. As the main support for the structure, the axially disposed wire will be subjected to the same forces as described for the unsupported wire, but will to some degree be laterally supported by the STYROFOAM™ matrix. Since the styrene foam can support only about 20-25 lbs per square inch compressive force after 10% deformation, the wire remains the main structural component. The tendency of the wire to buckle is, however, somewhat restrained by forces generated as the wire bows and compresses the surrounding foam in the direction of bowing, but there is no support for the wire on the side opposite the direction of bowing and the wire will eventually rupture the compressed foam and fail as described above. This is essentially the same phenomena involved with the prior art structures described above where structural layers are laminated to or encapsulated within foam layers and the resulting structure subjected to stress.
Now consider, that same steel wire coated with an adhesive and inserted longitudinally at the axis of the STYROFOAM™ cylinder such that the wire tips are exposed at the base and top of the cylinder and the shaft is circumferentially bonded to the foam. As the main support for the structure, the axially disposed wire will be subjected to the same forces as described for the unbonded wire, but the tendency of the wire to buckle is now restrained by foam matrix compressive resistance on the bowing side, and tensile forces on the opposite side between wire and foam because of the adhesive. Also, the circumferentially bonded adhesive on the wire itself will resist elongation and contraction of the wire's surface to provide additional stiffening and stability, further resisting the wire's tendency to buckle under compressive axial load.
It is, therefore, a general object of the invention to provide an ultra-lite building system operable to utilize the foam matrix itself, in combination with an adhesion to a fully encapsulated rigid sheet or membrane, for the prime purpose of laterally bracing said membrane to support high compressive axial load with minimum material expenditure. By volume, in the present invention the system is greater than 50% air, by which is created a structural matrix that laterally braces an axial-loaded membrane to produce ultimate strength. Therein, structural performance is maximized with minimum material.
It is further object of the present invention to provide a high strength but extremely light weight axial load-bearing structural foam core panels where the strength to weight ration can exceed 1000 to 1.
Another object of the present invention is to provide structural load-bearing wall panels wherein the encapsulated rigid sheet or membrane structure is in the form of longitudinally corrugated sheets with hollow tubular sections which are continuous across the entire dimension of the panels and establish a functionally homogeneous composite structure.
Yet another object of the present invention is to provide pairs of said corrugated sheets which, when reversed and mated together, form hollow tubular sections with perforated surfaces for the aspiration of process gases, the additional structural resistance against buckling, and the eventual installation of utilities related to panel erection in building construction.
Another object of the present invention is to provide this same wall panel configuration in the horizontal or oblique application to resist laterally applied loads.
Still another object of the present invention is to provide filler floor joists or beams which may be joined to vertical wall sections to create a stable structure.
Another object of the present invention is to provide floor beams comprising rigid hollow tubular sections encapsulated in a rectangular volume of foam.
Yet another object of the present invention is to provide studs and joists that enhance the structural integrity of the structure in case of fire.
It is another general object of the invention to provide a ultra-lite building system that is suitable to construct a house of reinforced foam components that is both light weight and extremely rugged and suitable for modular construction.
It is another general object of the invention to provide an ultra-lite building system which consists of a combination of wall panels, mounting plates, headers, joists and studs that are collectively light weight yet structurally rugged and suitable for long term building construction.
In the present invention, a stronger, cheaper, and much lighter composite material is used for building structures. The ultra light composite building materials are resilient to certain forces of nature, such as earthquakes yet are concomitantly capable of supporting weight at a ratio of 1000 to 1. The system is comprised of five basic components: plates, wall panels, headers, joists, and studs. These building components are capable of housing all of the necessary internal wiring, plumbing, and ducts required in a conventional building structure. The material from which the components are made is naturally insulating, moisture resistant, non-toxic and environmentally sound, eliminating the use and need of lumber in building structures. However, the components of the present invention are fully compatible with conventional building materials, tools, and building related skills.
The building components of the present invention can be pieced together in a tools-free interlocking framework, which integrates many building functions into a single step. The present invention drastically reduces the rough building time to about one week, which takes about five weeks with conventional materials, tools, and skills. Further, the present invention is cost-efficient and less resource intensive, because it consolidates the major building processes, such as building the frame, insulation, vapor barrier, sheathing, drywall, plumbing, mechanical, electrical, siding, and roofing.
Other objects and advantages of the present invention will become apparent from the following detailed description of preferred embodiments thereof taken in conjunction with the accompanying drawings, wherein:
FIGS. 5A-B is an axonometric view of a floor beam and floor panel component of the ultra-lite building system;
FIGS. 8C-D are one-hundred-thirty-five degree corner building component and a junction component accessory; and
Turning now to the drawings wherein like references refer to like parts,
In a preferred embodiment the building structure 10 is constructed upon conventional foundation of concrete pad 12. First a perimeter course of base plates 14 are positioned about the perimeter of the concrete pad. These base plates can be bolted to the concrete pad in a conventional manner. Each of the base plates 14 includes a plurality of upstanding stub columns 16 which are preferably circular in cross section but may be manufactured with other geometrical configurations such as elliptical, square, triangular, etc. as desired.
Mounted above the base plates are a plurality of wall panels 18. these wall panels 18 are generally composed from plastic columns 20 which are interconnected by spacer plates 22 as will be discussed in greater detail below. The columns 20 and spacer plates 22 are enrobed with a plastic foam material which forms a generally solid rectangular panel configuration which is extremely light but is concomitantly structurally rugged and fully functional as a conventional wall, load bearing assembly.
The columns 20 of the wall panels 18 are configured in cross-section to be compatible with the stub columns 16 of the base plates and the wall panels 18 are assembled into wall surfaces by being positioned over the base plates 14 and slid into vertical alignment with the stub columns 16.
In a preferred embodiment the wall panels 18 are vertically secured by metal studs 24 (note
A plurality of header plates 26, having column stubs 28 that extend above and below the plates serve to engage an upper opening in the wall panel columns 20. With the base plate 14 bolted to the concrete pad 12, the wall panels secured with metal studs 24 and application of header plates 26 it will be appreciated that an extremely light but solid construction has already been assembled.
Next junction modules 28 are mounted on top of the header plates 26. The junction modules 28 comprise a plastic shell construction that is in the form of a solid rectangular configuration with side walls and edge surfaces (note
A plurality of joist beams 34 extend between opposing junction modules and include generally parallel side wall surfaces and an arcuate upper surface. The joist beams are dimensioned to fit over the pipe saddles 32 and form a floor support surface between opposing walls of the building structure. As will be discussed below, each of the joists 34 is composed of a plastic shell and a foam coating that provides an extremely strong but light component.
As also shown in
The building structure or house 10 can be finished with attic sections of header plates 44 and wall sections 46 as shown in
Finally, a roof 48 can be constructed over the wall structure by assembling additional wall sections 50 together with crown or ridge beams 52 and gutter plates 54. Of course the building structure 10 can be enhanced with conventional trim accouterments such as siding 56 or brick facing 58 and the roof can be covered with conventional shingles 60, etc.
Turning now to
In a preferred embodiment the panel 18 is dimensioned in width so that half a column is exposed at each edge 82 and 84 which extends through the height of the panel 18. These channels enable the panel to be assembled with compatible channels 86 on eight side of a sheet metal stud 88. In addition, the side wall construction includes tying columns 90 which are constructed from extruded plastic and serve to fit between the studs 88 and the panel edge channels to tie the two together into a structural unit.
FIGS. 8A-D disclose various structural details of various connecting units.
The foam layer 80 is preferably composed of expanded polymeric beads. However, in alternative embodiments other types of foam or expanded foam layers could be provided. The foam layer 80 is formed on opposing sides of the structural members 76 and 78 as a composite lamination with an adhesive. This process is disclosed in detail my prior U.S. Pat. No. 6,205,728 which is hereby incorporated by reference in its entirety. The composite lamination formed by the structural members 76 and 78 and the foam layer 80 form a lightweight panel section in which the structural members are laterally stiffened by the foam layer and, thus, can withstand an increased axial load without laterally bending or buckling outward.
In one embodiment a cover layer 160, note
The tubular columns 80 can be used as passageways to position electrical wires or other types of utilities therethrough. Additionally, the tubular sections 806 can have flexible water supply pipes extending therethrough, or be used as a substitute for air conditioning ductwork.
After reading and understanding the foregoing description of the invention, in conjunction with the illustrative drawings, it will be appreciated that several advantages of the subject system are obtained.
The subject invention provides an new way to build housing. The light weight construction is faster to assemble, stronger, cheaper and better than convention wood stick construction buildings.
The subject invention provides earthquake resistance, and a strength to weight ration of approximately 1000 to 1 in a composite material hat is greater than 50% air.
The steel or sheet metal studs makes the structure rugged and resistant to collapse in the event of fire.
The wall panels, joists, header blocks, junction blocks, all have channels that are usable for pipes, ducts and wiring without cutting special channels and altering the structural integrity of the overall construction.
In describing the invention, reference has been made to a preferred embodiment and illustrative advantages of the invention. Those of skill in the art, however, and familiar with the instant disclosure of the subject invention may recognize additions, deletions, modifications, substitutions and other changes which will fall within the purview of the subject invention set forth in the following claims.