Posted by: Popy
saddles calculation - 03/09/10 06:49 AM
I use PV Elite 2010 to calculate a horizontal vessel on saddle supports. Under "Load Cases" "Miscellaneous options" I have the option of choosing Zick analysis or PD5500. What are the difference between Zick's analysis, ASME DIV 2, PD5500 and EN13445?
Posted by: Ray_Delaforce
Re: saddles calculation - 03/15/10 09:02 AM
Hi Popy
They are all taken from the original paper by Leonard Zick, and modified slightly for each code. ASME Section VIII, Division 1 does not have the procedure for saddles in the body of the code. We formerly used the procedure from the Dennis Moss book: 'Pressure Vessel Design Manual'. However, in the 2007 version of ASME Section VIII, Division 2, a procedure was included for saddle analysis (again based on the Leonard Zick paper). We adopted this procedure also for ASME Section VIII, Division 1 as we felt that it was more logical to do so.
PD 5500 and EN 13445 have prescribed procedures to performing the saddle analysis.