Piping Engineering published by Tube Turns 1979. Check out the
charts in Line Expansion and Flexibility.
A lot of charts on loops by one of the grandaddy of pipe flexibility analysis S.W. Spielvogel Piping Stress Calc Simplified.
There was a Flex-Anal chart published by Blaw-Knox and another one published by Power Piping.
Not sure whether the above mentioned reference available in the market. If youre lucky maybe the chart on 3 legs loops previously posted at SPED website is still OK.
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