fabric material and technique for custom strain patterns
I found a material fabrication technique - 3D thermal lamination - that will allow me to design the fabric re-enforcement to follow the stress strain lines of the structural forces.
the technique is expensive but is ideal for on bespoke applications such as the skinning of the beams.
The manufacturing process is usually designed for high performance sails, and therefore can handle complex double curves. But there is also a high potential for use is tension structures.
The synthetic fibers: carbon, polyester and aramid, are incredibly strong and can be layered in such a way as not create non-uniform thickness and strength in the fabric depending on the application. 
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