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Building a liftup
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I have not yet read the above messages, but here are a couple thoughts if you may have extreme temperature variations: <br /> <br />Make it so you could swap out various lengths of flextrack or sectional track during different seasons. <br /> <br />For example, the bridge could contain 8inch long sections of sectional track at one end of the bridge in the summer. Then in the winter, you may need to switch to a 8.125 length of sectional track. <br /> <br />You could design it so that the wood doesn't care if you have expansion/contraction, because you'll have a built-in gap. The track could easily bridge, say, a 1/4" gap without any support under it. <br /> <br />I also think you could make the ends adjustable - either with screws (ideal), or shims (not as ideal, but possibly eadier to implement). <br /> <br />Just a couple rough philosophical thoughts...
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