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Shelter structures having an upper shelter portion supported (internally or externally) at an apex and one or more peripheral support elements supported by an external suspension web provided externally of a base region of the upper shelter portion are provided. The upper shelter portion provides a

Shelter structures having an upper shelter portion supported (internally or externally) at an apex and one or more peripheral support elements supported by an external suspension web provided externally of a base region of the upper shelter portion are provided. The upper shelter portion provides a roof-like structure, while a lower enclosure portion may be connected, directly or indirectly, to the upper shelter portion and may provide wall-like structures that may include doors, vents, windows, and the like, or that may comprise an open network of lines, straps, wires, or bands. In tent embodiments, the upper shelter portion and the lower enclosure portion may be provided as fabric structures that, when erected, form tensioned fabric structures. Support systems, kits for assembling structures, reinforcement features and methods for assembling structures are also disclosed.

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1. An assembly that, when assembled, provides a tensioned structure having an internal volume, comprising: a flexible upper shelter portion having an apex and a base peripheral region; a flexible lower shelter portion having an upper region associated with the base peripheral region of the upper she

1. An assembly that, when assembled, provides a tensioned structure having an internal volume, comprising: a flexible upper shelter portion having an apex and a base peripheral region; a flexible lower shelter portion having an upper region associated with the base peripheral region of the upper shelter portion at a transition region and extending away from the transition region; and an external peripheral suspension web extending externally of the transition region at the interface of the upper shelter portion and a lower shelter portion and having a substantially continuous inner edge associated with the transition region, the external peripheral suspension web being configured for suspending a peripheral support element externally of the transition region, wherein the peripheral support element is suspended only by the external peripheral suspension web. 2. The assembly of claim 1, wherein the external peripheral suspension web comprises a material having different stretch properties than the material(s) forming the upper and lower shelter portions. 3. The assembly of claim 1, wherein the external peripheral suspension web is configured to suspend a peripheral support element having a substantially continuous perimeter and a substantially closed structure form. 4. The assembly of claim 1, wherein the external peripheral suspension web is configured to suspend a continuous peripheral support element having a curved form extending externally along at least 50% of the perimeter of the transition region. 5. The assembly of claim 1, wherein the transition region has a circular or polygonal configuration and the external peripheral suspension web is configured to suspend a peripheral support element having a generally circular configuration. 6. The assembly of claim 1, wherein the external peripheral suspension web is configured to suspend a peripheral support element on a plane substantially parallel to a plane of a ground or support surface when the assembly is assembled to provide a tensioned structure. 7. The assembly of claim 1, wherein the apex is at a central location of the upper shelter portion. 8. The assembly of claim 1, wherein the apex is not at a central location of the upper shelter portion and either or both the upper and lower shelter portions are asymmetrically arranged with respect to the apex. 9. The assembly of claim 1, additionally comprising a floor associated with a base peripheral region of the lower shelter portion. 10. The assembly of claim 1, additionally comprising an eave associated with the structure and positioned below the transition region, wherein the eave is formed as a band having a cylindrical or annular configuration. 11. The assembly of claim 10, wherein the eave is fabricated from a material that is different from the material used for the upper and/or lower shelter portions. 12. The assembly of claim 1, additionally comprising an internal central apical support structure and an internally directed tensioning structure extending internally of the transition region and configured to be suspended between the transition region of the assembly and the internal apical support structure and adjustably positioned in association with the central apical support structure when the assembly is assembled as a tensioned structure. 13. The assembly of claim 12, wherein the internally directed tensioning structure comprises a plurality of radially arranged webs or a substantially continuous fabric structure. 14. The assembly of claim 1, additionally comprising a plurality of pliable external buttressing elements positioned below the external suspension web and physically linking the external suspension web and the lower shelter structure. 15. The assembly of claim 1, additionally comprising a plurality of internal buttressing elements positioned to physically link internal surfaces of the upper and lower shelter portions in the area of the transition region. 16. The assembly of claim 1, wherein the flexible upper and lower shelter portions comprise a pliable fabric material. 17. A tensioned fabric structure comprising: a flexible upper shelter portion having an apex supported by an apical support structure and a base peripheral region; a flexible lower shelter portion having an upper region associated with the base peripheral region of the upper shelter portion at a transition region and extending away from the transition region and the base peripheral region of the upper shelter portion; and an external peripheral suspension web extending externally of the transition region and having a substantially continuous inner edge associated with the transition region supporting a peripheral support element externally of the transition region along at least 50% of the perimeter of the transition region, wherein the peripheral support element is suspended only by the external peripheral suspension web. 18. The tensioned fabric structure of claim 17, wherein the peripheral support element has a substantially continuous perimeter and a substantially closed structure form. 19. The tensioned fabric structure of claim 17, wherein the peripheral support element has a generally circular configuration. 20. The tensioned fabric structure of claim 17, wherein the peripheral support element is suspended on a plane substantially parallel to a ground plane or a support surface plane. 21. The tensioned fabric structure of claim 17, additionally comprising a base suspension web extending externally of a base region of the lower shelter portion and a plurality of fixtures associated with the base suspension web and positioned a distance externally of the base region of the lower shelter portion. 22. The tensioned fabric structure of claim 21, wherein the base suspension web has a substantially continuous inner edge associated with the base region of the lower shelter portion. 23. The tensioned fabric structure of claim 17, wherein the apex of the upper shelter portion is supported by at least one internal apical support. 24. The tensioned fabric structure of claim 17, additionally comprising a second external peripheral suspension web supporting a second peripheral support element externally of the fabric structure. 25. A kit for assembling a tensioned fabric structure comprising: a flexible upper shelter portion having an apex and a base peripheral region; a flexible lower shelter portion having an upper region associated with the base peripheral region of the upper shelter portion at a transition region and extending away from the transition region; an external peripheral suspension web having a substantially continuous inner edge associated with the transition region extending externally of the transition region and configured for supporting a peripheral support element externally of the transition region; and a peripheral support element having, or assemble-able to have, a continuous form and adapted to be suspended solely by the external suspension web. 26. The kit of claim 25, wherein the peripheral support element has, or assemble-able to have, a closed, continuous form. 27. The kit of claim 26, wherein the peripheral support element is assemble-able to form a closed, continuous form by joining a plurality of tubular sections to one another at interlocking ends. 28. The kit of claim 25, additionally comprising a second external suspension web associated with and extending externally of a perimeter of the lower shelter portion and configured for supporting a peripheral support element externally of the lower shelter portion. 29. The kit of claim 25, additionally comprising at least one internal apical support element. 30. The kit of claim 25, additionally comprising a covering structure adapted to be suspended over the tensioned fabric structure.