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…showed last 75 words of 2289 total…be observed. In the top most sections, strictly horizontal grains will be used, but as the arch curves to a vertical orientation, vertically oriented grains need to be used. This gradual change in grain will be possible with plywood style layering of the balsa. Until further testing of prototypes is possible, this is all of the relevant information available. Ideally, a structure such as this one should perform well, but that remains to be seen.