Abstract: A triangulated roof structure for supporting a roof that projects in plan a substantially closed curve includes a substantially horizontal outer compression ring, a plurality of tension hoops concentrically arranged within the compression ring at different heights relative to a common reference plane, and a plurality of substantially vertical compression members having upper and lower ends, affixed at their lower ends to each of the tension hoops. The compression members are located so that compression members affixed to a first tension hoop are not radially aligned with compression members affixed to an adjacent tension hoop. The structure also includes a plurality of tension elements interconnecting a compression member affixed to the first tension hoop to a proximal pair of compression members affixed to an adjacent tension hoop and means for securing an outermost tension hoop and the vertical compression members attached thereto to the compression ring.

Abstract: A triangulated cable dome roof having a retractable roof portion includes a triangulated cable arrangement for supporting a roof membrane, a roof membrane which is fixed to a portion of the triangulated cable arrangement so that a portion of the underlying area is exposed, and a retractable roof portion movably secured to the triangulated cable arrangement. The retractable roof portion preferably includes one or more retractable roof sections, each of which is movable between a closed position in which the retractable roof sections overlay the uncovered portion of the triangulated cable arrangement and an opened position in which the retractable roof sections nest above the covered portion of the triangulated cable arrangement, thereby exposing a portion of the underlying area.

Abstract: A triangulated roof structure for supporting a roof that projects in plan a substantially closed oval curve having major and minor axes, includes a substantially horizontal outer compression ring, a substantially planar cable truss positioned along the major axis of the oval, a plurality of oval tension hoops concentrically arranged within the compression ring at different heights relative to a common reference plane, and a plurality of substantially vertical compression members having upper and lower ends, affixed at their lower ends to each of the oval tension hoops. The compression members are located so that compression members affixed to a first tension hoop are not radially aligned with compression members affixed to an adjacent tension hoop.