Design Process for a Polyethylene Chemical vertical storage tanks
Design Process for a Polyethylene Chemical vertical storage tanks
(OP)
I am trying to get through the process of designing a Polyethylene tank. These are no large tanks and the external loading is calced easy enough using ASCE however this industry seems to be using an ASTM D spec.. I am not really sure of the process and how that all fits into the ASCE load combo's. For example the specs call out for a simple hoop stress calc to design wall thickness (totally ignoring any other stresses due to external loading. Also per the ASCE there is an API 620 that I don't have and I don't know if it is even relevant.






RE: Design Process for a Polyethylene Chemical vertical storage tanks
RE: Design Process for a Polyethylene Chemical vertical storage tanks
RE: Design Process for a Polyethylene Chemical vertical storage tanks
I am looking at this for a small manufacturer (no in house engineering). According to their spec these tanks are designed per UBC witch is quite outdate. So I am trying to bring them up to current IBC codes, however I am struggling a bit trying to integrate this ASTM D spec into IBC loading.
My first thought is to just combine the hoop stresses from the liquid and horizontal stresses derived from ASCE 7 loading. Or should these be considered separately.
thanks,