> The problem is that each panel’s compression characteristics will be > different or, you could say, have its own distinct personality. The problem is also that you don't have control of the different requirements for stiffness in different areas of the scale, as you do with rib supported assemblies. > If one > insisted on having compression in the panel then the best way is > probably a hybrid system where you underbuild the precrowned rib support > somewhat counting on a certain amount, but less, compression to achieve > the rest of the requisite stiffness. You still have the > unpredictability of the panel’s unique ability to withstand compression, > but reducing the amount might create a somewhat more stable system. > > David Love Yes, with the unpredictability being proportional to the degree to which panel compression supports crown. Ron N
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