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  1. Miaaa1101

    Railway Pipeline Stress Analysis - design factor

    many thanks to everyone! thanks for pointing out that I should use 31.8 instead of 31.4...that's very helpful!! For liquid pipeline, effective stress design factor can be 0.9. I still don't find the factor for gas pipeline though, but it will definetely smaller than 0.9 to my understanding. My...
  2. Miaaa1101

    Railway Pipeline Stress Analysis - design factor

    Thanks ahead for everyone's reply! More details here: actually we're going to construct the railroad over the existing uncased gas pipeline, we will have ~10ft embankment over the existing ground and also over the existing pipe. We're trying to perform the stress analysis for the new...
  3. Miaaa1101

    Railway Pipeline Stress Analysis - design factor

    Hi everyone, I'm working on aa pipeline stress analysis crossing the railway and I'm referring to API RP 1102 (2017) and ASME B31.4 -2006. Starting from API RP 1102 My pipe can pass the "allowable stress check“ with 0.72SMYS. Let's call F1=0.72 However, it failed for the "total effective stress...
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