Patent Publication Number: US-2022220722-A1

Title: Folding Roof Component

Description:
CROSS-REFERENCES TO RELATED APPLICATIONS 
     This application is a continuation-in-part application of U.S. Nonprovisional application Ser. No. 17/527,520, filed Nov. 16, 2021, which is a continuation application of PCT Patent Application No. PCT/US21/59440, filed Nov. 16, 2021, and which claims the benefit of U.S. Provisional Application No. 63/136,268 filed Jan. 12, 2021 and U.S. Provisional Application No. 63/188,101 filed May 13, 2021; this application is also a continuation-in-part application of U.S. Nonprovisional application Ser. No. 17/504,883, filed Oct. 19, 2021, which claims the benefit of U.S. Provisional Application No. 63/136,268 filed Jan. 12, 2021, U.S. Provisional Application No. 63/181,447, filed Apr. 29, 2021, and U.S. Provisional Application No. 63/196,400 filed Jun. 3, 2021; and this application additionally claims the benefit of U.S. Provisional Application No. 63/196,400, filed Jun. 3, 2021, U.S. Provisional Application No. 63/188,101, filed May 13, 2021, and U.S. Provisional Application No. 63/136,268 filed Jan. 12, 2021. 
    
    
     BACKGROUND OF THE INVENTION 
     Field of the Invention 
     The inventions herein relate to structures, such as dwellings and other buildings for residential occupancy, commercial occupancy and/or material storage, and to components for such structures. 
     Description of the Related Art 
     In the field of residential housing, the traditional technique for building homes is referred to as “stick-built” construction, where a builder constructs housing at the intended location using in substantial part raw materials such as wooden boards, plywood panels, and steel columns. The materials are assembled piece by piece over a previously prepared portion of ground, for example, a poured concrete slab or a poured concrete or cinder block foundation. 
     There have been a variety of efforts to depart from the conventional construction techniques used to create dwellings, as well as commercial spaces and like. One of the alternatives to stick-built construction is very generally referred to as modular housing. As opposed to stick-built construction, where the structure is built on-site, a modular house is constructed in a factory and then shipped to the site, often by means of a tractor-trailer. 
     Such modular housing often exceeds in size normally-permitted legal limits for road transport. For example, in the United States the maximum permitted dimensions for road transport are in general 102 inches (259.1 cm) in width, 13.5 feet (4.11 m) in height and 65 to 75 feet (19.81 to 22.86 m) in length. Thus, in many cases transporting a modular house from factory to site requires oversize load permits, which may impose restrictions on when transport can be undertaken and what routes can be utilized. Oversize road regulations may also require the use of an escort car and a trailing car as well. All of these requirements and restrictions inevitably increase the cost of the modular housing. 
     Significant advancements in the construction of dwellings and commercial space have been made by the current inventors, as exemplified by their patent documents, including U.S. Pat. Nos. 8,474,194, 8,733,029, 10,688,906, 10,829,029 and 10,926,689. In one aspect, these patents pertain to fabricating wall, floor and roof components in a factory that are folded together into a compact shipping module, and which are then transported to the intended location and unfolded to yield a fully formed structure. 
     SUMMARY OF THE INVENTION 
     The present inventions constitute advancements in the deployment of roof portions of folded building structures to reduce the risk of certain of the roof portions being “pinned” against other portions of the building structures during the steps of unfolding. 
     In one aspect, the present inventions are directed to a folded building structure comprising a fixed space portion defined by (i) a first floor portion, (ii) a rectangular planar first roof portion having a thickness, a longitudinal length, a first transverse width and an interior surface, and (iii) a planar first fixed wall portion of a first wall component, which first fixed wall portion has a first fixed portion top edge and adjoins a first transverse edge of the first floor portion and a first transverse edge of the first roof portion. There is provided a rectangular planar second roof portion having a thickness, a longitudinal length, a second transverse width and an interior surface, with the second roof portion horizontally stacked in a second roof portion folded position on the first roof portion and pivotally connected along a horizontal longitudinal first axis to the first roof portion to permit the second roof portion to pivot, about the first axis relative to the first roof portion, from the second roof portion folded position to a second roof portion unfolded position at which the first and second roof portions are coplanar; and also a rectangular planar third roof portion having a thickness, a longitudinal length, a longitudinally-oriented leading edge, a third transverse width and an interior surface, with the third transverse width being greater than the first transverse width and being greater than the second transverse width, and with the third roof portion horizontally stacked in a third roof portion folded position on the second roof portion and pivotally connected along a horizontal longitudinal second axis to the second roof portion to permit the third roof portion to pivot, about the second axis relative to the second roof portion, from the third roof portion folded position to a third roof portion unfolded position at which the third roof portion is coplanar with the second roof portion in the second roof portion unfolded position. The first wall component additionally includes a planar first pivoting wall portion with a first pivoting portion top edge having a first pivoting portion top edge length, with the first pivoting wall portion (i) disposed in a first pivoting portion folded position proximate the fixed space portion and (ii) pivotally connected along a vertical third axis to the first fixed wall portion of the first wall component to permit the first pivoting wall portion to pivot, about the third axis relative to the first fixed wall portion, from the first pivoting portion folded position to a first pivoting portion unfolded position, coplanar with the first fixed wall portion, in which the first pivoting portion top edge is positioned under the interior surfaces of the second and third roof portions when the second and third roof portions are in their unfolded positions. 
     In another aspect, the present inventions are directed to a folded building structure comprising a planar first roof portion having a thickness, a first longitudinal edge, a first transverse roof edge having a width, an opposed second transverse roof edge having a width, and an interior surface, with the first transverse roof edge adjoining the first longitudinal edge at a first end and the opposed second transverse roof edge adjoining the first longitudinal edge at a second end. In addition, a planar second roof portion having a thickness, a third transverse roof edge having a width, an opposed fourth transverse roof edge having a width, and an interior surface, is horizontally stacked in a second roof portion folded position on the first roof portion and pivotally connected along a horizontal longitudinal first axis to the first roof portion to permit the second roof portion to pivot, about the first axis relative to the first roof portion, from the second roof portion folded position to a second roof portion unfolded position at which the first and second roof portions are coplanar. There is additionally provided a planar third roof portion having a thickness, a longitudinally-oriented leading edge, a fifth transverse roof edge having a width, an opposed sixth transverse roof edge having a width, and a planar interior surface, which is horizontally stacked in a third roof portion folded position on the second roof portion and pivotally connected along a horizontal longitudinal second axis to the second roof portion to permit the third roof portion to pivot, about the second axis relative to the second roof portion, from the third roof portion folded position to a third roof portion unfolded position coplanar with the second roof portion in the second roof portion unfolded position. There is also provided a first wall having a first vertical edge and a first transverse top edge that adjoins the first vertical edge, the first transverse top edge having a top edge length at least equal to the sum of the widths of the first, third and fifth transverse roof edges, with the first roof portion joined to the first transverse top edge proximate to the first transverse roof edge with the first end proximate to the first vertical edge; and a second wall having a second vertical edge and a second transverse top edge that adjoins the second vertical edge, the second transverse top edge having a top edge length at least equal to the sum of the widths of the second, fourth and sixth transverse roof edges, the first roof portion joined to the second transverse top edge proximate to the second transverse roof edge with the second end proximate to the second vertical edge. The width of the fifth transverse roof edge is greater than the width of the first transverse roof edge and greater than the width of the third transverse roof edge, and the width of the sixth transverse roof edge is greater than the width of the second transverse roof edge and greater than the width of the fourth transverse roof edge. 
     In yet another aspect, the present inventions are directed to a folded building structure comprising a planar first roof portion having a thickness, a first longitudinal edge, a first transverse roof edge having a width, an opposed second transverse roof edge having a width, and an interior surface, with the first transverse roof edge adjoining the first longitudinal edge at a first end and the opposed second transverse roof edge adjoining the first longitudinal edge at a second end. In addition, a planar second roof portion having a thickness, a third transverse roof edge having a width, an opposed fourth transverse roof edge having a width, and an interior surface, is horizontally stacked in a second roof portion folded position on the first roof portion and pivotally connected along a horizontal longitudinal first axis to the first roof portion to permit the second roof portion to pivot, about the first axis relative to the first roof portion, from the second roof portion folded position to a second roof portion unfolded position at which the first and second roof portions are coplanar. There is additionally a planar third roof portion having a thickness, a longitudinally-oriented leading edge, a fifth transverse roof edge having a width, an opposed sixth transverse roof edge having a width, and an interior surface, which is horizontally stacked in a third roof portion folded position on the second roof portion and pivotally connected along a horizontal longitudinal second axis to the second roof portion to permit the third roof portion to pivot, about the second axis relative to the second roof portion, from the third roof portion folded position to a third roof portion unfolded position coplanar with the second roof portion in the second roof portion unfolded position. There is also provided a first wall having a first vertical edge and a first transverse top edge that adjoins the first vertical edge, the first transverse top edge having a top edge length at least equal to the sum of the widths of the first, third and fifth transverse roof edges, with the first roof portion joined to the first transverse top edge proximate to the first transverse roof edge with the first end proximate to the first vertical edge; and a second wall having a second vertical edge and a second transverse top edge that adjoins the second vertical edge, the second transverse top edge having a top edge length at least equal to the sum of the widths of the second, fourth and sixth transverse roof edges, the first roof portion joined to the first transverse top edge proximate to the second transverse roof edge with the second end proximate to the second vertical edge. A first wheel caster having a first caster length is secured proximate to the leading edge of the third roof portion at a location such that the first wheel caster comes into rolling contact with the first transverse top edge for a least a portion of the top edge length thereof when the third roof portion is moved between the third roof portion folded position and the third roof portion unfolded position; and the sum of the width of the fifth transverse roof edge and the first caster length is greater than the width of the first transverse roof edge and greater than the width of the third transverse roof edge. 
     These and other aspects of the present inventions are described in the drawings annexed hereto, and in the description of the preferred embodiments and claims set forth below. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a perspective view of a finished structure prepared in accordance with the present inventions. 
         FIG. 2  is a schematic top view of a finished structure prepared in accordance with the present inventions. 
         FIG. 3  is a schematic end view of a shipping module from which is formed the finished structure shown in  FIG. 1 . 
         FIGS. 4 and 5  are partial cutaway views of a finished structure in accordance with the present inventions, depicting in greater detail aspects of the roof and floor components. 
         FIG. 6  is a schematic perspective view depicting the exterior edge reinforcement for a wall component in accordance with the present inventions. 
         FIG. 7  is an exploded cross-sectional view of a multi-layered, laminate construction for use in the enclosure components of the present inventions. 
         FIGS. 8A, 8B and 8C  are schematic side views showing an unfolding sequence of three roof portions having the same dimension in the transverse direction. 
         FIG. 9  is a schematic side view of the unfolding at a particular point in the unfolding sequence of three roof portions, with one differently dimensioned in the transverse direction, in accordance with the present inventions. 
         FIG. 10  is a schematic side view of the unfolding at a particular point in the unfolding sequence of three roof portions, wherein one is provided with wheel casters, in accordance with the present inventions. 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     An embodiment of the foldable, transportable structure  150  in which the inventions disclosed herein can be implemented is depicted in  FIGS. 1 through 5 . When fully unfolded, as exemplified by  FIG. 1 , structure  150  has a rectangular shape made of three types of generally planar and rectangular enclosure components  155 , the three types of enclosure components  155  consisting of a wall component  200 , a floor component  300 , and a roof component  400 . As shown in  FIGS. 1 and 2 , the perimeter of structure  150  is defined by first longitudinal edge  106 , first transverse edge  108 , second longitudinal edge  116  and second transverse edge  110 . For convenience, a direction parallel to first longitudinal edge  106  and second longitudinal edge  116  may be referred to as the “longitudinal” direction, a direction parallel to first transverse edge  108  and second transverse edge  110  may be referred to as the “transverse” direction, and a direction parallel to the vertical direction in  FIG. 1  may be referred to as the “vertical” direction. Structure  150  as shown has one floor component  300 , one roof component  400  and four wall components  200 ; although it should be understood that the present inventions are applicable to structures having other configurations as well. 
     Enclosure components  155  (wall component  200 , floor component  300  and roof component  400 ) can be fabricated and dimensioned as described herein and positioned together to form a shipping module  100 , shown end-on in  FIG. 3 . The enclosure components  155  are dimensioned so that the shipping module  100  is within U.S. federal highway dimensional restrictions. As a result, shipping module  100  can be transported over a limited access highway more easily, and with appropriate trailering equipment, transported without the need for oversize permits. Thus, the basic components of structure  150  can be manufactured in a factory, positioned together to form the shipping module  100 , and the modules  100  can be transported to the desired site for the structure, where they can be readily assembled, as described herein. 
     Enclosure Component ( 155 ): General Description 
     The enclosure components  155  of the present invention include a number of shared design features that are described below. 
     A. Laminate Structure Design 
     Enclosure components  155  can be fabricated using a multi-layered, laminate design. A particular laminate design that can be used to fabricate enclosure components  155  comprises a first structural layer  210 , a foam panel layer  213 , a second structural layer  215  and a protective layer  218 , as shown in  FIG. 7  and described further below. 
     In particular, first structural layer  210  is provided in the embodiment of enclosure component  155  that is depicted in  FIG. 7 . First structural layer  210  in the embodiment shown comprises a sheet metal layer  205 , which can be for example galvanized steel or aluminum. Sheet metal layer  205  is made from a plurality of generally planar rectangular metal sheets  206  positioned adjacent to each other to generally cover the full area of the intended enclosure component  155 . 
     Referring again to  FIG. 7 , there is next provided in the depicted embodiment of enclosure component  155  a foam panel layer  213 , comprising a plurality of generally planar rectangular foam panels  214  collectively presenting a first face  211  and a second opposing face  212 . Foam panels  214  are made for example of expanded polystyrene (EPS) foam. A number of these foam panels  214  are positioned adjacent to each other and superposed first face-down on first structural layer  210  to generally cover the full area of the intended enclosure component  155 . The foam panels  214  of foam panel layer  213  preferably are fastened to the metal sheets  206  of first structural layer  210  using a suitable adhesive, preferably a polyurethane based construction adhesive. Foam panel layer  213  can include exterior edge reinforcement and interior edge reinforcement, as described further below 
     In the embodiment of the enclosure component  155  depicted in  FIG. 7 , there is next provided a second structural layer  215 , having a first face that is positioned on the second opposing face  212  of foam panels  214  (the face distal from first structural layer  210 ), and also having a second opposing face. Second structural layer  215  in the embodiment shown comprises a sheet metal layer  216 , which can be for example galvanized steel or aluminum. Sheet metal layer  216  is made from a plurality of generally planar rectangular metal sheets  217  positioned adjacent to each other and superposed first face-down on the second opposing face of foam panel layer  213  to generally cover the full area of the intended enclosure component  155 . The metal sheets  217  of second structural layer  215  preferably are fastened to foam panel layer  213  using a suitable adhesive, preferably a polyurethane based construction adhesive. 
     In the embodiment of the enclosure component  155  depicted in  FIG. 7 , there is optionally next provided a protective layer  218 , having a first face that is positioned on the second opposing face of second structural layer  215  (the face distal from foam panel layer  213 ), and also having a second opposing face. Optional protective layer  218  in the embodiment shown comprises a plurality of rectangular structural building panels  219  principally comprising an inorganic composition of relatively high strength, such as magnesium oxide (MgO). The structural building panels  219  are positioned adjacent to each other and superposed first face-down on the second opposing face of second structural layer  215  to generally cover the full area of the intended enclosure component  155 . The building panels  219  of protective layer  218  preferably are fastened to second structural layer  215  using a suitable adhesive, preferably a polyurethane based construction adhesive. Protective layer  218  can be used if desired to impart a degree of fire resistance to the enclosure component  155 , as well as to provide a pleasing texture and/or feel. 
     Other embodiments of multi-layered, laminate designs, which can be used to fabricate the enclosure components  155  of the present invention, are described in U.S. Nonprovisional patent application Ser. No. 16/786,130, entitled “Foldable Building Structures with Utility Channels and Laminate Enclosures,” having the same inventors as this disclosure, filed on Feb. 10, 2020 and now issued as U.S. Pat. No. 11,118,344. The contents of that U.S. Nonprovisional patent application Ser. No. 16/786,130, entitled “Foldable Building Structures with Utility Channels and Laminate Enclosures,” having the same inventors as this disclosure and filed on Feb. 10, 2020, are incorporated by reference as if fully set forth herein, particularly including the multi-layered, laminate designs described for example at 91910034-57 and depicted in  FIGS. 4A-4D  thereof. 
     B. Enclosure Component Exterior Edge Reinforcement 
     The exterior edges of each enclosure component  155  (i.e., the edges that define the perimeter of enclosure component  155 ) can be provided with exterior edge reinforcement, as desired. Exterior edge reinforcement generally comprises an elongate rigid member which can protect the foam panel material of foam panel layer  213  that would otherwise be exposed at the exterior edges of enclosure components  155 . Exterior edge reinforcement can be fabricated from one or more of laminated strand lumber board, wooden board, C-channel extruded aluminum or steel, or the like, and is generally secured to the exterior edges of enclosure component  155  with fasteners, such as screw or nail fasteners, and/or adhesive. 
     C. Enclosure Component Partitioning 
     Enclosure components  155  in certain instances are partitioned into enclosure component portions to facilitate forming a compact shipping module  100 . In those instances where an enclosure component  155  is partitioned into enclosure component portions, any exterior edge reinforcement on the exterior edges defining the perimeter of the enclosure component is segmented as necessary between or among the portions. 
     The enclosure component portions can be joined by hinge structures or mechanisms to permit the enclosure component portions to be “folded” and thereby contribute to forming a compact shipping module  100 . 
     D. Enclosure Component Interior Edge Reinforcement 
     An enclosure component  155  partitioned into enclosure component portions will have interior edges. There will be two adjacent interior edges for each adjacent pair of enclosure component portions. Such interior edges can be provided with interior edge reinforcement. Similar to exterior edge reinforcement, such interior edge reinforcement generally comprises an elongate, rigid member which can protect the foam panel material of foam panel layer  213  which that would otherwise be exposed at the interior edges of enclosure components  155 . Interior edge reinforcement can be fabricated from one or more of laminated strand lumber board, wooden board, C-channel extruded aluminum or steel, or the like, and is generally secured to the interior edges of enclosure component  155  with fasteners, such as screw or nail fasteners, and/or adhesive. 
     E. Enclosure Component Load Transfer 
     In the case of enclosure components  155 , it is necessary to transfer the loads imposed on their surfaces to their exterior edges, where those loads can be transferred either to or through adjoining walls, or to the building foundation. For enclosure components  155  that are horizontally oriented when in use (floor component  300  and roof component  400 ), such loads include the weight of equipment, furniture and people borne by their surfaces, as well as vertical seismic loads. For enclosure components that are vertically oriented when in use (wall component  200 ), such loads include those arising from meteorological conditions (hurricanes, tornadoes, etc.) and human action (vehicle and other object impacts). 
     For this purpose, multi-layered, laminate designs as shown in  FIG. 7  will function to transfer the loads described above. To add additional load transfer capability, structural members, such as beams and/or joists, can be utilized within the perimeter of the enclosure components  155 , as is deemed appropriate to the specific design of structure  150  and the particular enclosure component  155 , to assist in the transfer of loads to the exterior edges. Particular embodiments of such structural members, which also incorporate hinge structures, are described in in U.S. Nonprovisional patent application Ser. No. 17/527,520 entitled “Folding Beam Systems”, filed Nov. 16, 2021 and having the same inventors as this disclosure. The contents of that U.S. Nonprovisional patent application Ser. No. 17/527,520 entitled “Folding Beam Systems”, filed Nov. 16, 2021 and having the same inventors as this disclosure, is incorporated by reference as if fully set forth herein, particularly the description of the hinged vertical load transfer components set forth for example in  0074-0089 and 0104-0126 and in FIGS. 8A-13E and 15A-24A thereof, as well as the description of the associated end hinge assemblies set forth for example in  0090-0093 and 0127-0132 and in FIGS. 14A-14B, 24B and 25A-25D thereof. 
     F. Enclosure Component Sealing Systems 
     Structure  150  comprises a number of wall, floor and roof components with abutting or exposed exterior edges, as well as a number of partitioned wall, floor and roof components with interior edges. In this regard, sealing structures can be utilized, with the objective to limit or prevent the ingress of rain water, noise and outside air across these exterior and interior edges into the interior of structure  150 . 
     Particular sealing structures for accomplishing the foregoing objective are described in PCT Patent Application No. PCT/US21/56415, entitled “Enclosure Component Sealing Systems,” filed on Oct. 25, 2021 and having the same inventors as the present application. The contents of that PCT Patent Application No. PCT/US21/56415, entitled “Enclosure Component Sealing Systems,” filed on Oct. 25, 2021 and having the same inventors as this disclosure, are incorporated by reference as if fully set forth herein, particularly including the sealing systems described for example at  0080-0167 and depicted in FIGS. 9-20 thereof, and also including the exemplary placements for such sealing systems described in  0168-0174 and depicted in FIGS. 8A-8B thereof. 
     Further design details of wall component  200 , floor component  300 , and roof component  400  are provided in the sections following. 
     Wall Component ( 200 ) 
     Typically, a structure  150  will utilize four wall components  200 , with each wall component  200  corresponding to an entire wall of structure  150 . 
     A. General Description 
     Wall component  200  has a generally rectangular perimeter. As shown in  FIG. 1 , wall components  200  have plural apertures, specifically a door aperture  202 , which has a door frame and door assembly, and plural window apertures  204 , each of which has a window frame and a window assembly. The height and length of wall components  200  can vary in accordance with design preference, subject as desired to the dimensional restrictions applicable to transport, described above. In this disclosure, structure  150  is fashioned with all sides of equal length; accordingly, its first and second longitudinal edges  106  and  116 , and its first and second transverse edges  108  and  110 , are all of equal length. It should be understood however, that the inventions described herein are applicable to structures having other dimensions, such as where two opposing wall components  200  are longer than the other two opposing wall components  200 . 
     As indicated above, wall components  200  of the present inventions can utilize a multi-layered, laminate design. In the embodiment depicted in  FIGS. 1 through 6 , wall component  200  utilizes the multi-layered, laminate design shown in  FIG. 7  employing these particular elements: the sheet metal layer  205  of first structural layer  210  is 24 gauge galvanized steel approximately 0.022-0.028 inch thick, the foam panels  214  of foam panel layer  213  are EPS foam approximately 5.68 inches thick, the sheet metal layer  216  of second structural layer  215  is 24 gauge galvanized steel approximately 0.022-0.028 inch thick, and the building panels  219  of protective layer  218  are MgO board approximately 0.25 inch (6 mm) thick. 
     The perimeter of each wall component  200  is generally provided with exterior edge reinforcement. As exemplified by wall component  200  shown in  FIG. 6 , the exterior edge reinforcement for wall component  200  is a floor plate  220  along the bottom horizontal edge, a ceiling plate  240  along the top horizontal edge and two end pieces  270  respectively fastened at each vertical edge of wall component  200 . In the case of a wall component  200 , exterior edge reinforcement provides regions for fastening like regions of abutting wall components  200 , roof component  400  and floor component  300 , in addition to protecting the exterior edges of foam panel material. In the embodiment shown in  FIGS. 1 through 6 , the exterior edge reinforcement for wall component  200  provided by floor plate  220 , ceiling plate  240 , and end pieces  270  is fabricated from laminated strand lumber board 5.625″ deep and 1.5″ thick. 
     B. Partitioned Wall Components 
     Referring to  FIG. 2 , structure  150  has two opposing wall components  200 , where one of the two opposing wall components  200  comprises first wall portion  200   s - 1  and second wall portion  200   s - 2 , and the other of the two opposing wall components  200  comprises third wall portion  200   s - 3  and fourth wall portion  200   s - 4 . Each of wall portions  200   s - 1 ,  200   s - 2 ,  200   s - 3  and  200   s - 4  has a generally rectangular planar configuration. As shown in  FIG. 2 , the interior vertical edge  192 - 1  of wall portion  200   s - 1  is proximate to a respective interior vertical edge  192 - 2  of wall portion  200   s - 2 , and the interior vertical edge  194 - 3  of wall portion  200   s - 3  is proximate a respective interior vertical wall edge  194 - 4  of wall portion  200   s - 4 . Interior edge reinforcement can be provided at any one or more of vertical edges  192 - 1 ,  192 - 2 ,  194 - 3  and  194 - 4 . In the embodiment shown in  FIGS. 1 through 6 , the interior edge reinforcement provided at vertical edges  192 - 1 ,  192 - 2 ,  194 - 3  and  194 - 4 , is fabricated from laminated strand lumber board 5.625″ deep and 1.5″ thick. 
     Referring again to  FIG. 2 , first wall portion  200   s - 1  is fixed in position on floor portion  300   a  proximate to first transverse edge  108 , and third wall portion  200   s - 3  is fixed in position on floor portion  300   a , opposite first wall portion  200   s - 1  and proximate to second transverse edge  110 . First wall portion  200   s - 1  is joined to second wall portion  200   s - 2  with a hinge structure that permits wall portion  200   s - 2  to pivot about vertical axis  192  between a folded position and an unfolded position, and third wall portion  200   s - 3  is joined to fourth wall portion  200   s - 4  with a hinge structure to permit fourth wall portion  200   s - 4  to pivot about vertical axis  194  between a folded position and an unfolded position. 
     Notably, first wall portion  200   s - 1  is longer than third wall portion  200   s - 3  by a distance approximately equal to the thickness of wall component  200 , and second wall portion  200   s - 2  is shorter than fourth wall portion  200   s - 4  by a distance approximately equal to the thickness of wall component  200 . Furthermore, wall portion  200   s - 1  and wall portion  200   s - 3  are each shorter in length (the dimension in the transverse direction) than the dimension of floor portion  300   a  in the transverse direction. Dimensioning the lengths of wall portions  200   s - 1 ,  200   s - 2 ,  200   s - 3  and  200   s - 4  in this manner permits wall portions  200   s - 2  and  200   s - 4  to nest against each other in an overlapping relationship when in an inwardly folded position. In this regard,  FIG. 2  depicts wall portions  200   s - 2  and  200   s - 4  both in their unfolded positions, where they are labelled  200   s - 2   u  and  200   s   4 - u  respectively, and  FIG. 2  also depicts wall portions  200   s - 2  and  200   s - 4  both in their inwardly folded positions, where they are labelled  200   s - 2   f  and  200   s   4 - f  respectively. When wall portions  200   s - 2  and  200   s - 4  are in their inwardly folded positions ( 200   s - 2   f  and  200   s - 4   f ), they facilitate forming a compact shipping module. When wall portion  200   s - 2  is in its unfolded position ( 200   s - 2   u ), it forms with wall portion  200   s - 1  a wall component  200  proximate first transverse edge  108 , and when wall portion  200   s - 4  is in its unfolded position ( 200   s - 4   u ), it forms with wall portion  200   s - 3  a wall component  200  proximate second transverse edge  110 . 
     The hinge structures referenced above, for securing first wall portion  200   s - 1  to second wall portion  200   s - 2 , and third wall portion  200   s - 3  to fourth wall portion  200   s - 4 , can be surface mounted or recessed, and of a temporary or permanent nature. The provision of interior edge reinforcement, as described above, can provide a region for securing such hinge structures. Suitable hinge structures can be fabricated for example of ferrous or non-ferrous metal, plastic or leather material. 
     C. Unpartitioned Wall Components 
     As compared to the two wall components  200  proximate first and second transverse edges  108  and  110 , which are partitioned into wall portions, the remaining two wall components  200  proximate first and second longitudinal edges  106  and  116  do not comprise plural wall portions, but rather each is a single piece structure. However, one of these wall components  200 , which is sometimes denominated  200 P in this disclosure, and which is located on floor portion  300   b  proximate first longitudinal edge  106 , is pivotally secured to floor portion  300   b  by means of hinge structures to permit wall component  200 P to pivot about horizontal axis  105  shown in  FIG. 3  from a folded position to an unfolded position. Pivotally securing wall component  200 P also facilitates forming a compact shipping module  100 . The remaining wall component  200 , sometimes denominated  200 R in this disclosure, is rigidly secured on floor portion  300   a  proximate second longitudinal edge  116  and abutting the vertical edges of first wall portion  200   s - 1  and third wall portion  200   s - 3  proximate to second longitudinal edge  116 , as shown in  FIG. 2 . 
     The hinge structures referenced above, for securing wall component  200 P to floor portion  300   b , can be surface mounted or recessed, and of a temporary or permanent nature. The provision of exterior edge reinforcement, as described above, can provide a region for securing such hinge structures. Suitable hinge structures can be fabricated for example of ferrous or non-ferrous metal, plastic or leather material. 
     Floor Component ( 300 ) 
     Typically, a structure  150  will utilize one floor component  300 ; thus floor component  300  generally is the full floor of structure  150 . 
     A. General Description 
     Floor component  300  has a generally rectangular perimeter.  FIGS. 4 and 5  depict edge-on views of floor component  300  in accordance with the present inventions. The perimeter of floor component  300  is defined by first longitudinal floor edge  117 , first transverse floor edge  120 , second longitudinal floor edge  119  and second transverse floor edge  118 . In particular, (a) first longitudinal floor edge  117 , (b) first transverse floor edge  120 , (c) second longitudinal floor edge  119  and (d) second transverse floor edge  118  generally coincide with (i.e., underlie) (w) first longitudinal edge  106 , (x) first transverse edge  108 , (y) second longitudinal edge  116  and (z) second transverse edge  110 , respectively, of structure  150 . 
     The length and width of floor component  300  can vary in accordance with design preference. In the particular embodiment of structure  150  depicted in  FIGS. 2, 4 and 5 , floor component  300  is approximately 19 feet (5.79 m) by 19 feet (5.79 m). 
     Floor component  300  and its constituent elements are generally designed and dimensioned in thickness and in other respects to accommodate the particular loads to which floor component  300  may be subject. It is preferred that floor component  300  utilize a multi-layered, laminate design, such as that described in connection with  FIG. 7 . In the embodiment shown in  FIGS. 4 and 5 , the bottom-most surface of floor component  300  comprises sheet metal layer  205  of first structural layer  210 , with sheet metal layer  205  being 24 gauge galvanized steel approximately 0.022-0.028 inch thick. Above sheet metal layer  205  there are provided foam panels  214  of foam panel layer  213 . In the embodiment shown in  FIGS. 4 and 5 , foam panels  214  are EPS foam approximately 7.125 inches thick. Above foam panel layer  213  there is provided sheet metal layer  216  of second structural layer  215 , with sheet metal layer  216  being 24 gauge galvanized steel approximately 0.022-0.028 inch thick. Above sheet metal layer  216  of second structural layer  215 , there are provided building panels  219  of protective layer  218 , with building panels  219  being MgO board approximately 0.25 inch (6 mm) thick. 
     The perimeter of each floor component  300  is generally provided with exterior edge reinforcement. As exterior edge reinforcement for the embodiments of floor component  300  shown in  FIGS. 4 and 5 , a first footing beam  320  (visible edge-on in  FIG. 4 ) is positioned at the first longitudinal floor edge  117  of floor component  300 , a second footing beam  320  (visible edge-on in  FIG. 5 ) is positioned at the second transverse floor edge  118  of floor component  300 , a third footing beam  320  (visible edge-on in  FIG. 5 ) is positioned at the first transverse floor edge  120  of floor component  300 , and a fourth footing beam  320  (visible edge-on in  FIG. 4 ) is positioned at the second longitudinal floor edge  119  of floor component  300 . In the case of floor component  300 , the exterior edge reinforcement provided by footing beams  320  assists in resisting vertical loads and transferring such loads to any roof component  400  thereunder and then to underlying wall components  200 , and/or to the foundation of the finished structure  150 , in addition to protecting the edges of foam panel material of the foam panel layer  213 . In the embodiment shown in  FIGS. 1 through 6 , the exterior edge reinforcement provided by footing beams  420  of floor component  300  is fabricated from laminated strand lumber board 7.125″ deep and 1.5″ thick. 
     B. Floor Partitioning 
     The floor component  300  is partitioned into floor portion  300   a  and floor portion  300   b .  FIG. 2  shows flow portions  300   a  and  300   b  in plan view, and  FIG. 4  shows floor portions  300   a  and  300   b  in section view, edge-on. 
     Each of the floor portions  300   a  and  300   b  is a planar generally rectangular structure, with floor portion  300   a  adjoining floor portion  300   b . Interior edge  301   a  of floor portion  300   a  abuts interior edge  301   b  of floor portion  300   b , as shown in  FIG. 4 . As interior edge reinforcement, a reinforcing board  307  is positioned in floor portion  300   a  adjacent interior edge  301   a , and a reinforcing board  307  is positioned in floor portion  300   b  adjacent interior edge  301   b . In the embodiment shown in  FIGS. 1 through 5 , the interior edge reinforcement provided by reinforcing boards  307  is laminated strand lumber board 7.125″ deep and 1.5″ thick. 
     Referring to structure  150  shown in  FIGS. 2 and 4 , floor portion  300   a  is fixed in position relative to first wall portion  200   s - 1 , third wall portion  200   s - 3  and wall component  200 R. Floor portion  300   a  is joined with hinge structures to floor portion  300   b , so as to permit floor portion  300   b  to pivot through approximately ninety degrees (90°) of arc about a horizontal axis  305 , located proximate the top surface of floor component  300 , between a fully folded position, where floor portion  300   b  is vertically oriented as shown in  FIG. 3 , and a fully unfolded position, shown in  FIGS. 2 and 4 , where floor portion  300   b  is horizontally oriented and co-planar with floor portion  300   a.    
     Roof Component ( 400 ) 
     Typically, a structure  150  will utilize one roof component  400 ; thus roof component  400  generally is the full roof of structure  150 . 
     A. General Description 
     Roof component  400  has a generally rectangular perimeter.  FIGS. 1, 4 and 5  depict roof component  400  in accordance with the present inventions. The perimeter of roof component  400  is defined by first longitudinal roof edge  406 , first transverse roof edge  408 , second longitudinal roof edge  416  and second transverse roof edge  410 . In particular, (a) first longitudinal roof edge  406 , (b) first transverse roof edge  408 , (c) second longitudinal roof edge  416  and (d) second transverse roof edge  410  of roof component  400  generally coincide with (i.e., overlie) (w) first longitudinal edge  106 , (x) first transverse edge  108 , (y) second longitudinal edge  116  and (z) second transverse edge  110 , respectively, of structure  150 . 
     The length and width of roof component  400  can vary in accordance with design preference. In the particular embodiment of structure  150  depicted in  FIGS. 1, 4 and 5 , the length and width of roof component  400  approximates the length and width of floor component  300 . 
     Roof component  400  and its constituent elements are generally designed and dimensioned in thickness and in other respects to accommodate the particular loads to which roof component  400  may be subject. It is preferred that roof component  400  utilize a multi-layered, laminate design, such as that described in connection with  FIG. 7 . In the embodiment shown in  FIGS. 4 and 5 , the top-most surface of roof component  400  comprises sheet metal layer  205  of first structural layer  210 , with sheet metal layer  205  being 24 gauge galvanized steel approximately 0.022-0.028 inch thick. Below sheet metal layer  205  there are provided foam panels  214  of foam panel layer  213 , with foam panels  214  in the embodiment shown in  FIGS. 4 and 5  being EPS foam for example approximately 7.125 inches thick. Below foam panel layer  213  there is provided sheet metal layer  216  of second structural layer  215 , with sheet metal layer  216  being 24 gauge galvanized steel approximately 0.022-0.028 inch thick. Below sheet metal layer  216  of second structural layer  215 , there are provided building panels  219  of protective layer  218 , with building panels  219  being MgO board approximately 0.25 inch (6 mm) thick. 
     The perimeter of roof component  400  is generally provided with exterior edge reinforcement. As exterior edge reinforcement for the embodiment of roof component  400  shown in  FIGS. 4 and 5 , a first shoulder beam  435  (visible edge-on in  FIG. 4 ) is positioned at the first longitudinal roof edge  406  of roof component  400 , a second shoulder beam  435  (visible edge-on in  FIG. 5 ) is positioned at the first transverse roof edge  408  of roof component  400 , a third shoulder beam  435  (visible edge-on in  FIG. 5 ) is positioned at the second transverse roof edge  410  of roof component  400 , and a fourth shoulder beam  435  (visible edge-on in  FIG. 4 ) is positioned at the second longitudinal roof edge  416  of roof component  400 . In addition to protecting the exterior edges of foam panel material, the exterior edge reinforcement provided by shoulder beams  435  assists in resisting vertical loads and transferring such loads to lower floors through underlying wall components  200  supporting roof component  400 , and then to the foundation of the finished structure  150 . Such exterior edge reinforcement can also provide a region for fastening like regions of abutting enclosure components  155  (underlying and any overlying). Shoulder beams  435  of roof component  400  can be fabricated from laminated strand lumber board 7.125″ deep and 1.5″ thick. 
     B. Roof Partitioning 
     The roof component  400  of structure  150  is partitioned into roof portions  400   a ,  400   b  and  400   c .  FIG. 1  shows roof portions  400   a ,  400   b  and  400   c  in perspective view, and  FIG. 4  shows roof portions  400   a ,  400   b  and  400   c  in section view, edge-on. 
     Each of the roof portions  400   a ,  400   b  and  400   c  is a planar generally rectangular structure, with roof portion  400   a  adjoining roof portion  400   b , and roof portion  400   b  adjoining roof portion  400   c . Interior edge  412   c  of roof component  400   c  abuts a first interior edge  412   b  of roof component  400   b , as shown in  FIG. 4 . For interior edge reinforcement, a reinforcing board  437  is positioned adjacent interior edge  412   c , and a reinforcing board  437  is positioned against first interior edge  412   b . Interior edge  412   a  of roof portion  400   a  abuts a second interior edge  412   b  of roof portion  400   b , as shown in  FIG. 4 . For interior edge reinforcement, a reinforcing board  437  is positioned adjacent interior edge  412   a , and a reinforcing board  437  is positioned against second interior edge  412   b . In the embodiment shown in  FIGS. 1  through  6 , the interior edge reinforcement provided by reinforcing boards  437  of roof component  400  is laminated strand lumber board 7.125″ deep and 1.5″ thick. 
     In the shipping module  100  shown in  FIG. 3 , roof portions  400   a ,  400   b  and  400   c  preferably are accordion folded (stacked), with roof component  400   b  stacked on top of roof component  400   a , and roof component  400   c  stacked on top of the roof component  400   b . Referring to structure  150  shown in  FIG. 4 , roof portion  400   a  is fixed in position relative to first wall portion  200   s - 1 , third wall portion  200   s - 3  and wall component  200 R. Thus to realize the accordion folded configuration shown in  FIG. 3  roof portion  400   a  is joined to roof portion  400   b  with hinge structures provided between interior edge  412   a  of roof portion  400   a  and second interior edge  412   b  of roof portion  400   b . Such hinge structures are adapted to permit roof portion  400   b  to pivot through up to one hundred and eighty degrees (180°) of arc about a horizontal axis  405   a , located proximate the top of roof component  400  and shown in  FIG. 4 , between the roof fully folded position shown in  FIG. 3 , where roof portion  400   b  lies stacked flat against roof portion  400   a , and the fully unfolded position shown in  FIG. 4 . In turn, roof portion  400   b  is joined to roof portion  400   c  with hinge structures provided between first interior edge  412   b  of roof portion  400   b  and interior edge  412   c  of roof portion  400   c . Such hinge structures are adapted to permit roof portion  400   c  to pivot through up to one hundred and eighty degrees (180°) of arc about a horizontal axis  405   b , located proximate the bottom of roof component  400  and shown in  FIG. 4 , between the folded position shown in  FIG. 3 , where roof portion  400   c  lies stacked flat against roof portion  400   b  (when roof portion  400   b  is positioned to lie flat against roof portion  400   a ), and the fully unfolded position shown in  FIG. 4 . 
     C. Roof Portion Dimensioning 
     Roof portions  400   b ,  400   c  each can be identically dimensioned in the transverse direction. When so dimensioned however, there is a risk that roof portion  400   c  will be impeded from deploying during the unfolding process. In particular, as roof portions  400   b ,  400   c  are unfolded from the folded stacked position (shown in  FIG. 3 ) through the inclined orientation (shown in  FIG. 8A ), the weight of roof portion  400   c  will cause roof portion  400   c  to remain resting against roof portion  400   b , up to the vertical orientation (shown in  FIG. 8B ), particularly if the unfolding force is being applied to roof portion  400   b . Therefore, at approximately the vertical position shown in  FIG. 8B , further unfolding preferably is undertaken by applying a horizontal force  431  to roof portion  400   c  in the transverse direction shown in  FIG. 8B , typically applied proximate to leading edge  421  of roof portion  400   c , coupled with applying a retarding horizontal force  432  to roof portion  400   b  in the transverse direction shown in  FIG. 8B , typically at horizontal axis  405   b  or to roof portion  400   b  below horizontal axis  405   b . These horizontal forces cause roof portion  400   c  to rotate away and separate from roof portion  400   b , and thereby permit unfolding to continue. Otherwise, as unfolding proceeds there is a risk that the weight of roof portion  400   c  acting downwardly will “pin” the upper portion  422  of leading edge  421  against the top edges  221  of transversely-oriented wall components  200  (namely, against the segment of top edge  221  of wall portion  200   s - 2  shown in  FIG. 8C , and against the corresponding opposing segment of top edge  221  of wall portion  200   s - 4 ), as shown in  FIG. 8C , with the potential to impede unfolding and even cause damage to either or both of roof portion  400   c  and transversely-oriented wall components  200 . 
     To reduce the foregoing risk, roof portion  400   c  can be appropriately dimensioned so that the width of roof portion  400   c  in the transverse direction is greater than the width in the transverse direction of either of roof portion  400   a  and roof portion  400   b . An example of this is shown in  FIG. 9 . As can be seen in that figure, by increasing the transverse width W 2  of roof portion  400   c  an appropriate amount, the leading edge  421  of roof portion  400   c  will come into contact with the top edges  221  of transversely-oriented wall components  200  before roof portions  400   b ,  400   c  are vertically-oriented. In that circumstance, further efforts to rotate the roof portions  400   b ,  400   c  about horizontal axis  405   a  tend to beneficially act to separate roof portions  400   b  and  400   c  and reduce the risk of the leading edge  421  of roof portion  400   c  being pinned against the top edges  221  of transversely-oriented wall components  200 . 
     In the case where roof portions  400   a  and  400   b  have the same transverse width W 1 , the transverse width W 2  of roof portion  400   c  can be greater than the transverse width W 1  for example, by ten to fifteen percent, depending upon the thicknesses of roof components  400   b ,  400   c . Alternatively, the transverse width W 2  of roof portion  400   c  can be greater than the transverse width W 1  of roof portions  400   a  and  400   b  by an amount sufficient such that the leading edge  421  of roof portion  400   c , and particularly lower portion  423  thereof, comes into contact with the top edges  221  of transversely-oriented wall components  200  when roof portions  400   b  and  400   c  are acutely oriented during unfolding relative to roof portion  400   a ; i.e., before roof portions  400   b ,  400   c  are vertically-oriented during unfolding. As a further alternative, the transverse width W 2  of roof portion  400   c  can be greater than the transverse width W 1  of each of roof portions  400   a  and  400   b  by an amount equal to or greater than the aggregate thickness (T 1 +T 2  in  FIG. 9 ) of roof components  400   a  and  400   b.    
     In addition, friction-reducing components can be used to facilitate unfolding roof component  400 , such as by positioning a first wheel caster  499  at the leading edge  421  of roof portion  400   c  proximate to the corner of roof portion  400   c  that is supported by wall portion  200   s - 2  as roof portion  400   c  is deployed, as shown in  FIG. 10 , and positioning a similar second wheel caster  499  at the leading edge of roof portion  400   c  proximate to the corner of roof portion  400   c  that is supported by wall portion  200   s - 4  as roof portion  400   c  is deployed. Each of the wheel casters  499  comprises a wheel rotatably mounted in a frame so as to trace a linear track when displaced. Such wheel casters  499  permit the leading edge  421  of roof portion  400   c  in effect, to roll along the top edges  221  of transversely-oriented wall components  200  and thus facilitate unfolding. Where such wheel casters are utilized, the transverse width W 2  of roof portion  400   c  can be dimensioned larger than either of roof portions  400   a  and  400   b  in the transverse direction in accordance with the foregoing design alternatives, less the length “L”, shown in  FIG. 10 , of the first or second wheel caster  499 . Further information on wheel casters  499  is found in U.S. Nonprovisional patent application Ser. No. 16/786,315, entitled “Equipment and Methods for Erecting a Transportable Foldable Building Structure,” having the same inventors as this disclosure and filed on Feb. 10, 2020, the contents of which are incorporated by reference as if fully set forth herein, particularly the description of the wheel casters  499  and their placements found for example in  0133 and FIGS. 13D, 13E and 14B thereof. 
     Enclosure Component Manufacture 
     For enclosure components  155  utilizing the multi-layered, laminate design disclosed herein in reference to  FIG. 7 , the metal sheets  206  and  217  that can be used to form first structural layer  210  and second structural layer  215  respectively can be entirely flat and juxtaposed in a simple abutting relationship. Optionally, metal sheets  206  and  217  can be provided with edge structures that facilitate placement of sheets and panels during manufacture. 
     Particular edge structure designs for metal sheets  206  and  217  are described in U.S. Nonprovisional patent application Ser. No. 17/504,883 entitled “Sheet/Panel Design for Enclosure Component Manufacture,” having the same inventors as the inventions described herein and filed on Oct. 19, 2021. The contents of U.S. Nonprovisional patent application Ser. No. 17/504,883 entitled “Sheet/Panel Design for Enclosure Component Manufacture,” having the same inventors as the inventions described herein and filed on Oct. 19, 2021, are incorporated by reference as if fully set forth herein, particularly including the exterior and interior edge structure designs described for example at  00187-00205 and 00212 and in FIGS. 8, 9A-9C, 23A-23J and 24A-24B thereof. 
     A facility suitable for the manufacture of enclosure components  155 , as well as exemplary manufacturing steps, are also described in U.S. Nonprovisional patent application Ser. No. 17/504,883 entitled “Sheet/Panel Design for Enclosure Component Manufacture,” having the same inventors as the inventions described herein and filed on Oct. 19, 2021. The contents of U.S. Nonprovisional patent application Ser. No. 17/504,883 entitled “Sheet/Panel Design for Enclosure Component Manufacture,” having the same inventors as the inventions described herein and filed on Oct. 19, 2021, are incorporated by reference as if fully set forth herein, particularly including the facility suitable for manufacturing the enclosure components  155  of the present invention, as well as exemplary manufacturing steps, described for example at  00178-00186 and 00206-00222, and in FIGS. 22, 23A-23J and 24A-24B. 
     Enclosure Component Relationships and Assembly for Transport 
     It is preferred that there be a specific dimensional relationship among enclosure components  155 . 
       FIG. 2  shows a top schematic view of finished structure  150  shown in  FIG. 1 , and includes a geometrical orthogonal grid for clarity of explaining the preferred dimensional relationships among its enclosure components  155 . The basic length used for dimensioning is indicated as “E” in  FIG. 2 ; the orthogonal grid overlaid in  FIG. 2  is 8E long and 8E wide; notably, the entire structure  150 , preferably is bounded by this 8E by 8E orthogonal grid. 
     In  FIG. 2 , the four wall components  200  are each approximately 8E long, and each of roof portions  400   a  and  400   b  is approximately 8E long and 2.5E wide. Roof portion  400   c  is approximately 8E long and 2.9E wide. In  FIGS. 2 and 3 , each of floor components  300   a  and  300   b  is 8H long; whereas floor component  300   a  is just over 3E wide and floor component  300   b  is just under 5E wide. 
     The shipping module  100  shown edge-on in  FIG. 3  includes a fixed space portion  102  defined by roof component  400   a , floor component  300   a , wall component  200 R, wall portion  200   s - 1  and wall portion  200   s - 3 . As shown in  FIG. 2 , fourth wall portion  200   s - 4  is folded inward and positioned generally against fixed space portion  102 , and second wall portion  200   s - 2  is folded inward and positioned generally against second wall portion  200   s - 4  (wall portions  200   s - 2  and  200   s - 4  are respectively identified in  FIG. 2  as portions  200   s - 2   f  and  200   s - 4   f  when so folded and positioned). The three roof components  400   a ,  400   b  and  400   c  are shown unfolded in  FIG. 1  and shown accordion folded (stacked) in  FIG. 3 . Wall component  200 P, shown in  FIGS. 2 and 3 , is pivotally secured to floor portion  300   b  at the location of axis  105 , and is vertically positioned against the outside of wall portions  200   s - 2  and  200   s - 4 . In turn, floor portion  300   b  is vertically positioned proximate fixed space portion  102 , with wall component  200 P pending from floor portion  300   b  between floor portion  300   b  and wall portions  200   s - 2  and  200   s - 4 . 
     Sizing the enclosure components  155  of structure  150  according to the dimensional relationships disclosed above yields a compact shipping module  100 , as can be seen from the figures. Thus shipping module  100  depicted in  FIG. 3 , when dimensioned according to the relationships disclosed herein using an “E” dimension (see  FIG. 2 ) of approximately 28.625 inches (72.7 cm), and when its components are stacked and positioned as shown in  FIG. 3 , has an overall length of approximately 19 feet (5.79 m), an overall width of approximately 8.5 feet (2.59 meters) and an overall height of approximately 12.7 feet (3.87 meters). These overall dimensions are less than a typical shipping container. 
     It is preferred that the fixed space portion  102  be in a relatively finished state prior to positioning (folding) together all of the other wall, roof and floor portions as described above. In the embodiment shown in  FIGS. 1 and 2 , wall components  200  are fitted during manufacture and prior to shipment with all necessary door and window assemblies, with the enclosure components  155  being pre-wired, and fixed space portion  102  is fitted during manufacture with all mechanical and other functionality that structure  150  will require, such as kitchens, bathrooms, closets and other interior partitions, storage areas, etc. Carrying out the foregoing steps prior to shipment permits the builder, in effect, to erect a largely finished structure simply by “unfolding” (deploying) the positioned components of shipping module  100 . 
     Each of the wall, floor and roof components  200 ,  300  and  400 , and/or the portions thereof, can be sheathed in a protective film during fabrication and prior to forming the shipping module  100 . Alternatively or in addition, the entire shipping module  100  can be sheathed in a protective film. Such protective films can remain in place until after the shipping module  100  is at the construction site, and then removed as required to facilitate enclosure component deployment and finishing. 
     Shipping Module Transport 
     The shipping module is shipped to the building site by appropriate transport means. One such transport means is disclosed in U.S. Pat. No. 11,007,921, issued May 18, 2021; the contents of which are incorporated by reference as if fully set forth herein, particularly as found at column 3, line 26 to column 6, line 25 and in FIGS. 1A-2D thereof. As an alternative transport means, shipping module  100  can be shipped to the building site by means of a conventional truck trailer or a low bed trailer (also referred to as a lowboy trailer), and in the case of over-the-water shipments, by ship. 
     Structure Deployment and Finishing 
     At the building site, shipping module  100  is positioned over its desired location, such as over a prepared foundation; for example, a poured concrete slab, a poured concrete or cinder block foundation, sleeper beams or concrete posts or columns. This can be accomplished by using a crane, either to lift shipping module  100  from its transport means and move it to the desired location, or by positioning the transport means over the desired location, lifting shipping module  100 , then moving the transport means from the desired location, and then lowering shipping module  100  to a rest state at the desired location. Particularly suitable equipment and techniques for facilitating the positioning of a shipping module  100  at the desired location are disclosed in U.S. Nonprovisional patent application Ser. No. 16/786,315, entitled “Equipment and Methods for Erecting a Transportable Foldable Building Structure,” having the same inventors as this disclosure and filed on Feb. 10, 2020. The contents of that U.S. Nonprovisional patent application Ser. No. 16/786,315, entitled “Equipment and Methods for Erecting a Transportable Foldable Building Structure,” having the same inventors as this disclosure and filed on Feb. 10, 2020, are incorporated by reference as if fully set forth herein, particularly including the equipment and techniques described for example at  00126-00128 and in connection with  FIGS. 11A and 11B  thereof. 
     Following positioning of shipping module  100  at the building site, the appropriate portions of wall, floor and roof components  200 ,  300  and  400  are “unfolded” (i.e., deployed) to yield structure  150 . Unfolding occurs in the following sequence: (1) floor portion  300   b  is pivotally rotated about horizontal axis  305  (shown in  FIGS. 3 and 4 ) to an unfolded position, (2) wall component  200 P is pivotally rotated about horizontal axis  105  (indicated in  FIG. 3 ) to an unfolded position, (3) wall portions  200   s - 2  and  200   s - 4  are pivotally rotated about vertical axes  192  and  194  (shown in  FIG. 2 ) respectively to unfolded positions, and (4) roof portions  400   b  and  400   c  are pivotally rotated about horizontal axes  405   a  and  405   b  (shown in  FIGS. 3 and 4 ) respectively to unfolded positions. When accordion folded as a stack, it can be appreciated that the protective layer  218  of roof portion  400   a  is distal from the protective layer of roof portion  400   b , whereas the protective layer  218  of roof portion  400   b  is in contact with, or proximate to, the protective layer of roof portion  400   c . Thus in unfolding roof portions  400   b  and  400   c , it is regarded herein that the protective layer  218  of the second component portion rotates toward the protective layer  218  of the first component portion  400   a , whereas the protective layer  218  of the third component portion  400   c  rotates away from the protective layer  218  of the second component portion  400   b.    
     A mobile crane can be used to assist in the deployment of certain of the enclosure components  155 , specifically roof portions  400   b  and  400   c , floor portion  300   b , as well as the wall component  200 P pivotally secured to floor portion  300   b . Alternatively, particularly suitable equipment and techniques for facilitating the deployment of enclosure components  155  are disclosed in U.S. Nonprovisional patent application Ser. No. 16/786,315, entitled “Equipment and Methods for Erecting a Transportable Foldable Building Structure,” having the same inventors as this disclosure and filed on Feb. 10, 2020. The contents of that U.S. Nonprovisional patent application Ser. No. 16/786,315, entitled “Equipment and Methods for Erecting a Transportable Foldable Building Structure,” having the same inventors as this disclosure and filed on Feb. 10, 2020, are incorporated by reference as if fully set forth herein, particularly including the equipment and techniques described for example at  00132-00145 and depicted in FIGS. 12A-14B thereof. 
     After unfolding, the enclosure components  155  are secured together to finish the structure  150  that is shown in  FIG. 1 . If any temporary hinge structures have been utilized, then these temporary hinge structures can be removed if desired and the enclosure components  155  can be secured together. During or after unfolding and securing of the enclosure components  155 , any remaining finishing operations are performed, such as addition of roofing material, and making hook-ups to electrical, fresh water and sewer lines to complete structure  150 , as relevant here. 
     This disclosure should be understood to include (as illustrative and not limiting) the subject matter set forth in the following numbered clauses: 
     Clause 1. A folded building structure comprising: 
     a fixed space portion defined by (i) a first floor portion, (ii) a rectangular planar first roof portion having a thickness, a longitudinal length, a first transverse width and an interior surface, and (iii) a planar first fixed wall portion of a first wall component, the first fixed wall portion (x) having a first fixed portion top edge, and (y) adjoining a first transverse edge of the first floor portion and a first transverse edge of the first roof portion; 
     a rectangular planar second roof portion having a thickness, a longitudinal length, a second transverse width and a planar interior surface, the second roof portion horizontally stacked in a second roof portion folded position on the first roof portion and pivotally connected along a horizontal longitudinal first axis to the first roof portion to permit the second roof portion to pivot, about the first axis relative to the first roof portion, from the second roof portion folded position to a second roof portion unfolded position at which the first and second roof portions are coplanar; 
     a rectangular planar third roof portion having a thickness, a longitudinal length, a longitudinally-oriented leading edge, a third transverse width and an interior surface, the third transverse width being greater than the first transverse width and being greater than the second transverse width, the third roof portion horizontally stacked in a third roof portion folded position on the second roof portion and pivotally connected along a horizontal longitudinal second axis to the second roof portion to permit the third roof portion to pivot, about the second axis relative to the second roof portion, from the third roof portion folded position to a third roof portion unfolded position coplanar with the second roof portion in the second roof portion unfolded position; 
     the first wall component additionally including a planar first pivoting wall portion with a first pivoting portion top edge having a first pivoting portion top edge length, the first pivoting wall portion (i) disposed in a first pivoting portion folded position proximate the fixed space portion and (ii) pivotally connected along a vertical third axis to the first fixed wall portion of the first wall component to permit the first pivoting wall portion to pivot, about the third axis relative to the first fixed wall portion, from the first pivoting portion folded position to a first pivoting portion unfolded position, coplanar with the first fixed wall portion, in which the first pivoting portion top edge is positioned under the interior surfaces of the second and third roof portions when the second and third roof portions are in their unfolded positions. 
     Clause 2. The folded building structure of clause 1, wherein the fixed space portion is further defined by (iv) a planar second fixed wall portion of a second wall component in an opposing relationship with the first wall portion, the second fixed wall portion adjoining a second transverse edge of the first floor portion, which is opposed to the first transverse edge of the first floor portion, and adjoining a second transverse edge of the first roof portion, which is opposed to the first transverse edge of the first roof portion, with the second wall component additionally including a planar second pivoting wall portion with a second pivoting portion top edge having a second pivoting portion top edge length, the second pivoting wall portion (i) disposed in a second pivoting portion folded position proximate the fixed space portion, and (ii) pivotally connected along a vertical fourth axis to the second fixed wall portion, to permit the second pivoting wall portion to pivot, about the fourth axis relative to the second fixed wall portion of the second wall component, from the second pivoting portion folded position to a second pivoting portion unfolded position in which the second pivoting portion top edge is positioned under the interior surfaces of the second and third roof portions when the second and third roof portions are in their unfolded positions. 
     Clause 3. The folded building structure of either of clause 1 or clause 2, wherein the fixed space portion is further defined by (v) a third wall component having (i) a longitudinal top edge that is positioned under the interior surface of the first roof portion proximate the longitudinal edge of the first roof portion, (ii) a vertical edge that adjoins the first fixed wall portion proximate a vertical edge thereof, and (iii) a longitudinal bottom edge that adjoins the first floor portion proximate a longitudinal edge thereof. 
     Clause 4. The folded building structure of any one of clause 1, 2 or 3, wherein the first and second transverse widths are equal. 
     Clause 5. The folded building structure of any one of clause 1, 2, 3 or 4, wherein the third transverse width is greater than the second transverse width by at least the sum of the thicknesses of the first roof portion and the second roof portion. 
     Clause 6. The folded building structure of any one of clause 1, 2, 3, 4 or 5, wherein the third transverse width is greater than the second transverse width by an amount such that when the first pivoting wall portion is in the first pivoting portion unfolded position and the second and third roof portions are unfolded from the second and third roof portion folded positions and remain in mutual contact when so unfolded, the second and third roof portions are acutely oriented relative to the first fixed portion top edge when the leading edge of the third roof portion comes into contact with the first pivoting portion top edge. 
     Clause 7. The folded building structure of any one of clause 1, 2, 3, 4 or 5, further comprising a first wheel caster secured proximate the leading edge of the third roof portion at a location such that the first wheel caster comes into rolling contact with the first pivoting portion top edge for a least a portion of the first pivoting portion top edge length when the first pivoting wall portion is in the first pivoting portion unfolded position and the third roof portion is moved between the third roof portion folded position and the third roof portion unfolded position. 
     Clause 8. The folded building structure of clause 2, further comprising a second wheel caster secured proximate the leading edge of the third roof portion at a location such that the second wheel caster comes into rolling contact with the second pivoting portion top edge for a least a portion of the second pivoting portion top edge length when the third roof portion is moved between the third roof portion folded position and the third roof portion unfolded position. 
     Clause 9. The folded building structure of any one of clause 1, 2, 3 or 4, wherein the third transverse width is greater than the first transverse width by an amount in the range of from ten to fifteen percent of the first transverse width, and is greater than the second transverse width by an amount in the range of from ten to fifteen percent of the second transverse width. 
     Clause 10. A folded building structure comprising: 
     a planar first roof portion having a thickness, a first longitudinal edge, a first transverse roof edge having a width, an opposed second transverse roof edge having a width, and an interior surface, the first transverse roof edge adjoining the first longitudinal edge at a first end and the opposed second transverse roof edge adjoining the first longitudinal edge at a second end; 
     a planar second roof portion having a thickness, a third transverse roof edge having a width, an opposed fourth transverse roof edge having a width, and an interior surface, the second roof portion horizontally stacked in a second roof portion folded position on the first roof portion and pivotally connected along a horizontal longitudinal first axis to the first roof portion to permit the second roof portion to pivot, about the first axis relative to the first roof portion, from the second roof portion folded position to a second roof portion unfolded position at which the first and second roof portions are coplanar; 
     a planar third roof portion having a thickness, a longitudinally-oriented leading edge, a fifth transverse roof edge having a width, an opposed sixth transverse roof edge having a width, and an interior surface, the third roof portion horizontally stacked in a third roof portion folded position on the second roof portion and pivotally connected along a horizontal longitudinal second axis to the second roof portion to permit the third roof portion to pivot, about the second axis relative to the second roof portion, from the third roof portion folded position to a third roof portion unfolded position coplanar with the second roof portion in the second roof portion unfolded position; and 
     a first wall having a first vertical edge and a first transverse top edge that adjoins the first vertical edge, the first transverse top edge having a top edge length at least equal to the sum of the widths of the first, third and fifth transverse roof edges, the first roof portion joined to the first transverse top edge proximate to the first transverse roof edge with the first end proximate to the first vertical edge; 
     a second wall having a second vertical edge and a second transverse top edge that adjoins the second vertical edge, the second transverse top edge having a top edge length at least equal to the sum of the widths of the second, fourth and sixth transverse roof edges, the first roof portion joined to second first transverse top edge proximate to the second transverse roof edge with the second end proximate to the second vertical edge; and 
     wherein the width of the fifth transverse roof edge is greater than the width of the first transverse roof edge and greater than the width of the third transverse roof edge, and the width of the sixth transverse roof edge is greater than the width of the second transverse roof edge and greater than the width of the fourth transverse roof edge. 
     Clause 11. The folded building structure of clause 10, further comprising a third wall having a longitudinal top edge adjoining: (i) the interior surface of the first roof portion proximate the longitudinal edge of the first roof portion, (ii) the first wall proximate the first vertical edge, and (iii) the second wall proximate to the second vertical edge. 
     Clause 12. The folded building structure of either of clause 10 or clause 11, wherein the widths of the first and third transverse roof edges are equal to each other, and the widths of the second and fourth transverse roof edges are equal to each other. 
     Clause 13. The folded building structure of any one of clause 10, 11 or 12, wherein the width of the fifth transverse roof edge is greater than the width of the third transverse roof edge by at least the sum of the thicknesses of the first roof portion and the second roof portion, and the width of the sixth transverse roof edge is greater than the width of the fourth transverse roof edge by at least the sum of the thicknesses of the first roof portion and the second roof portion. 
     Clause 14. The folded building structure of any one of clause 10, 11, 12 or 13, wherein the width of the fifth transverse roof edge is greater than the width of the third transverse roof edge by an amount such that when the second and third roof portions are unfolded from the second and third roof portion folded positions and remain in mutual contact when so unfolded, the second and third roof portions are acutely oriented relative to the first transverse top edge and the second transverse top edge when the leading edge of the third portion comes into contact therewith. 
     Clause 15. The folded building structure of any one of clause 10, 11, 12 or 13, further comprising a first wheel caster secured proximate the leading edge of the third roof portion at a location such that the first wheel caster comes into rolling contact with the first transverse top edge for a least a portion of the top edge length thereof when the third roof portion is moved between the third roof portion folded position and the third roof portion unfolded position. 
     Clause 16. The folded building structure of clause 15, further comprising a second wheel caster secured proximate the leading edge of the third roof portion at a location such that the second wheel caster comes into rolling contact with the second transverse top edge for a least a portion of the top edge length thereof when the third roof portion is moved between the third roof portion folded position and the third roof portion unfolded position. 
     Clause 17. The folded building structure of any one of clause 10, 11 or 12, wherein the width of the fifth transverse roof edge is greater than the width of the first transverse roof edge and greater than the width of the third transverse roof edge by an amount in the range of from ten to fifteen percent of the width of the first transverse roof edge, and the width of the sixth transverse roof edge is greater than the width of the second transverse roof edge and greater than the width of the fourth transverse roof edge by an amount in the range of from ten to fifteen percent of the width of the second transverse roof edge. 
     Clause 18. A folded building structure comprising: 
     a planar first roof portion having a thickness, a first longitudinal edge, a first transverse roof edge having a width, an opposed second transverse roof edge having a width, and an interior surface, the first transverse roof edge adjoining the first longitudinal edge at a first end and the opposed second transverse roof edge adjoining the first longitudinal edge at a second end; 
     a planar second roof portion having a thickness, a third transverse roof edge having a width, an opposed fourth transverse roof edge having a width, and an interior surface, the second roof portion horizontally stacked in a second roof portion folded position on the first roof portion and pivotally connected along a horizontal longitudinal first axis to the first roof portion to permit the second roof portion to pivot, about the first axis relative to the first roof portion, from the second roof portion folded position to a second roof portion unfolded position at which the first and second roof portions are coplanar; 
     a planar third roof portion having a thickness, a longitudinally-oriented leading edge, a fifth transverse roof edge having a width, an opposed sixth transverse roof edge having a width, and an interior surface, the third roof portion horizontally stacked in a third roof portion folded position on the second roof portion and pivotally connected along a horizontal longitudinal second axis to the second roof portion to permit the third roof portion to pivot, about the second axis relative to the second roof portion, from the third roof portion folded position to a third roof portion unfolded position coplanar with the second roof portion in the second roof portion unfolded position; and 
     a first wall having a first vertical edge and a first transverse top edge that adjoins the first vertical edge, the first transverse top edge having a top edge length at least equal to the sum of the widths of the first, third and fifth transverse roof edges, the first roof portion joined to the first transverse top edge proximate to the first transverse roof edge with the first end proximate to the first vertical edge; 
     a second wall having a second vertical edge and a second transverse top edge that adjoins the second vertical edge, the second transverse top edge having a top edge length at least equal to the sum of the widths of the second, fourth and sixth transverse roof edges, the first roof portion joined to the second transverse top edge proximate to the second transverse roof edge with the second end proximate to the second vertical edge; 
     a first wheel caster having a first caster length secured proximate to the leading edge of the third roof portion at a location such that the first wheel caster comes into rolling contact with the first transverse top edge for a least a portion of the top edge length thereof when the third roof portion is moved between the third roof portion folded position and the third roof portion unfolded position; and 
     wherein the sum of the width of the fifth transverse roof edge and the first caster length is greater than the width of the third transverse edge by an amount such that when the second and third roof portions are unfolded from the second and third roof portion folded positions and remain in mutual contact when so unfolded, the second and third roof portions are acutely oriented relative to the first transverse top edge when the first caster comes into contact therewith. 
     Clause 19. The folded building structure of clause 18, wherein the widths of the first and third transverse roof edges are equal to each other, and the widths of the second and fourth transverse roof edges are equal to each other. 
     Clause 20. The folded building structure of either of clause 18 or clause 19, wherein the sum of the width of the fifth transverse roof edge and the first caster length is greater than the width of the third transverse roof edge by at least the sum of the thicknesses of the first roof portion and the second roof portion. 
     Clause 21. The folded building structure of any one of clause 18, 19 or 20, further comprising a second wheel caster having a second caster length secured proximate the leading edge of the third roof portion at a location such that the second wheel caster comes into rolling contact with the second transverse top edge for a least a portion of the top edge length thereof when the third roof portion is moved between the third roof portion folded position and the third roof portion unfolded position; and 
     wherein the sum of the width of the sixth transverse roof edge and the second caster length is greater than the width of the fourth transverse roof edge by an amount such that when the second and third roof portions are unfolded from the second and third roof portion folded positions and remain in mutual contact when so unfolded, the second and third roof portions are acutely oriented relative to the second transverse top edge when the second caster comes into contact therewith. 
     Clause 22. The folded building structure of clause 21, wherein the sum of the width of the sixth transverse roof edge and the second caster length is greater than the width of the fourth transverse roof edge by at least the sum of the thicknesses of the first roof portion and the second roof portion. 
     Clause 23. The folded building structure of clause 21, wherein the sum of the width of the fifth transverse roof edge and the first caster length is greater than the width of the first transverse roof edge and greater than the width of the third transverse roof edge by an amount in the range of from ten to fifteen percent of the width of the first transverse roof edge, and the sum of the width of the sixth transverse roof edge and the second caster length is greater than the width of the second transverse roof edge and greater than the width of the fourth transverse roof edge by an amount in the range of from ten to fifteen percent of the width of the second transverse roof edge. 
     Clause 24. The folded building structure of any one of clause 5, 13, 20 or 22, wherein each of the first, second and third roof portions comprises across its thickness: 
     a first structural layer having a first face and an opposing second face; 
     a foam panel layer having a first face and an opposing second face, the first face of the foam panel layer being bonded to the opposing second face of the first structural layer; 
     a second structural layer having a first face and an opposing second face, the first face of the second structural layer being bonded to the opposing second face of the foam panel layer. 
     Clause 25. The folded building structure of clause 24, wherein the first structural layer has a metallic composition. 
     Clause 26. The folded building structure of either of clause 24 or clause 25, wherein the second structural layer has a metallic composition. 
     Clause 27. The folded building structure of any one of clause 24, 25 or 26, further comprising a protective layer having a first face, an opposing second face, and an inorganic composition, the first face of the protective layer being bonded to the opposing second face of the second structural layer and the opposing second face of the protective layer constituting the interior surface of the roof portion. 
     Clause 28. The folded building structure of any one of clauses 1-27, wherein the first roof portion, the second roof portion in the second roof portion folded position, and the third roof portion in the third roof portion folded position have an accordion folded configuration. 
     Clause 29. The folded building structure of claim  10 , wherein the width of the fifth transverse roof edge is greater than the width of the first transverse roof edge and greater than the width of the third transverse roof edge by an amount in the range of from ten to fifteen percent of the width of the third transverse roof edge, and the width of the sixth transverse roof edge is greater than the width of the second transverse roof edge and greater than the width of the fourth transverse roof edge by an amount in the range of from ten to fifteen percent of the width of the fourth transverse roof edge. 
     Clause 30. The folded building structure of claim  21 , wherein the sum of the width of the fifth transverse roof edge and the first caster length is greater than the width of the first transverse roof edge and greater than the width of the third transverse roof edge by an amount in the range of from ten to fifteen percent of the width of the third transverse roof edge, and the sum of the width of the sixth transverse roof edge and the second caster length is greater than the width of the second transverse roof edge and greater than the width of the fourth transverse roof edge by an amount in the range of from ten to fifteen percent of the width of the fourth transverse roof edge.