I have noted the scale factors have not been applied to the piping section selected when comparing the calculation results (loads & stresses) to the model without the scale factors (same results returned). Why was that?
Good day to you Neil,
From AutoPIPE help:
Point scale factors are applied only to lumped gravity loads at the specified point and they include added weight and flange weight. Member scale factors are applied only to uniformly distributed gravity loads between two consecutive points and they include material, insulation, lining, content, and buoyancy forces.
You do not mention what type of scale factors were applied in your model. Therefore, if you applied point load scale factors and there were no Flanges or added Weights, then Yes, the scale factors would not have made any difference in your analysis results. Check your modeling.
Regards,
Mike DattilioBentley Systems Design AnalystDesign Engineering Analysis group===================================================
Kia Ora Mike
This was related to the topic "different seismic coefficient for different segments" in piping analysis (your response to Mangesh dated 12th July 2017). I put the translational seismic scale factors to a section of vertical piping in modelling of the elevated piping on higher seismic accelerations (up to 12m in height in the plant). I expected to see higher seismic loads at supports and stresses on piping after the factors applied. However I noted the same results were returned (I thought the multipliers would apply to the seismic mass of that section of piping with supports and piping components on it).
This feature in the program is great to apply multiple seismic coefficients for elevated piping in analysis. Sorry I am not quite sure in using it...