Minimum effective thickness of the expansion joint after molding
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In the calculations for the expansion joint of SW-6, there is a parameter known as the minimum effective thickness Sp after the expansion joint is formed. I carried out the calculations, and the result obtained for SP did not take into account any additional thickness loss; it only accounted for the thinning that occurs during the forming process. My question is: why is it still called effective thickness?
You don’t need to worry about this; the design formulas and charts for expansion joints are backed by thousands of experiments on the failure of such joints. During these experiments, the thickness of the materials used to manufacture the expansion joints exhibited both positive and negative deviations.
When calculating, it is sufficient to consider the nominal thickness; other factors have already been taken into account in the formulas.