Patent ID: 8668974

Claim:
A free standing curvilinear structure constructed by use of multiple inflated, cured, and hardened structural tubings and at least one sandwich panel, wherein the curvilinear structure comprises: multiple structural tubings, wherein each structural tubing comprises: a flexible outer membrane, wherein the membrane contains an outer surface and an inner surface; and a first lining connected to the inner or outer surface of the membrane, wherein the first lining comprises a first solid foam material formed from an inflated and cured expandable curable first lining material, wherein the flexible outer membrane and lining are pre-manufactured as the flexible outer membrane connected to the expandable curable first lining material before curing, and wherein the structural tubing is formed and shaped by the pre-manufactured flexible membrane and first lining, and wherein the curable first lining material is saturated and substantially flexible before curing and the first solid foam material is substantially rigid; and at least one sandwich panel, wherein each sandwich panel comprises: a second lining comprising a second solid foam material formed from a cured expandable curable second lining material; and a third lining comprising a third solid foam material formed from a cured expandable curable third lining material, wherein the second and third solid foam materials meet, and wherein the second and third linings are pre-manufactured, wherein each sandwich panel spans and encloses an area between structural tubings.