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[QUOTE="NJCuse97, post: 2726548, member: 5058"]
I understand it much the same way you do. In fact there is a good deal of similarity between the new roof design and Olympic Stadium here. The idea as I understand it is that the outer portion is the rigid portion and the inner portion is a "flexible" portion. PTFE that we will use is a teflon coated fiberglass woven (for structural rigidity/strength) fabric. My understanding is there is a rigidity to the fabric, but its loading capacity will obviously have its limits. This is one of the reasons it is portioned into smaller squares (balance rigidity with transparency). The bubble shape of them is so each panel can carry a load (support it's own weight plus a snow load). The tension wiring is holding a portion of these preformed panels at the farthest span so that they can "bridge" the gap between the rigid roof's span capability and the PTFE's self supporting capability. I also believe the bubble shape is for runoff so that there is no pooling for leak protection and more so so the loading is minimized (which in turn maximizes the materials panel size). This is the guesswork of an under-informed architect.
[URL="http://www.birdair.com/tensile-architecture/membrane/ptfe-fiberglass"]PTFE Fiberglass - Fabric Membranes | Birdair, Inc.[/URL]
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