I'm undertaking an assessment to PD 8010-1 which has an allowable stress criterion based on hoop stress - which is determined using pipe OD.

Accordingly, within CAESAR II configuration editor i've selected 'base hoop stress on' OD. However, when i attempt to reconcile the results it would appear the hoop stress is being calculated based on the mean diameter. Is there another setting within CAESAR II which i have overlooked?

Thanks

Here's a note in the Configuration processor's Help: "When the piping code specifies hoop stress evaluation, the software uses the code's hoop stress calculation and ignores Base Hoop Stress On. For example, offshore or transportation piping codes, such as B31.4, B31.8, and DNV, specify hoop stress evaluation."

PD 8010-1 is another one of these Codes.