![]() ![]() Three-dimensional expansion loops are widely used because this arrangement does not block the routing of low-temperature lines under the loop.The first two points have more influence on loop design than stress formulas, from the piping point of view.Piping Expansion Loops cannot extend too far beyond existing support or the overhang will cause the loop to “lose its balance.” This sets the maximum allowable loop height.Minimum loop height depends on the berthing of the line with respect to the location of the loop support. ![]() Loop width has only a secondary effect on results. Loop width does not have to be near 20 feet just because the loop nomographs happen to use that number.Thermal expansion must be allowed for when spacing adjacent loops.Loop width should always be based on utilizing existing supports.4: Multiple Expansion loops in a piping system Placing Expansion Loops/ Expansion Loop Placements ![]()
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