Abstract: A system and method for an engineered joint according to one example embodiment includes a hinge pin and loops that extend from membranes around the hinge pin. Multiple embodiments include loops that extend from an upper module membrane and cross to attach to a second upper module membrane and loops that extend from a first lower module membrane and cross to attach to a second lower module membrane.

Abstract: A system and method for an engineered joint according to one example embodiment includes a hinge pin and loops that extend from membranes around the hinge pin. Multiple embodiments include loops that extend from an upper module membrane and cross to attach to a second upper module membrane and loops that extend from a first lower module membrane and cross to attach to a second lower module membrane.

Abstract: A system and method for an engineered joint according to one example embodiment includes a hinge pin and loops that extend from membranes around the hinge pin. Multiple embodiments include loops that extend from an upper module membrane and cross to attach to a second upper module membrane and loops that extend from a first lower module membrane and cross to attach to a second lower module membrane.

Abstract: A flexible structure assembled of impermeable modules surrounds a constant volume of liquid so as to control its quality. The modules may join together so that they can adjust to changing water levels. They may have a single layer or an impermeable membrane may sandwich a foamed core. Anchor sacks may hold the structure tightly to the sea bottom, or conventional anchors embedded in the sea bottom may anchor floating structures whose modules close their bottoms. Seals over joints reduce seepage so that conventional filters may clean and treat the liquid. The foamed core modules buoy the structures and insulate against heat transfer. A floating mat of modules comprising flexible transparent membranes may cover the enclosed liquid to prevent heat loss while achieving a solar energy gain. The structure may also be made in one piece from a flexible membrane.