There have been numerous posts on applicability of different values of system design factor f2 for SUS, OPE and OCC/HYDRO cases in GRP analysis as per UKOOA / ISO 14692.

http://65.57.255.42/ubbthreads/ubbthread...=true#Post49395

These Codes share same basis for determining of allowable stress based on LTHS and ASTM D2992.
Our FRP manufacture recommends to use UKOOA and run 3 separate files with f2 equals 0.67 for SUS, 0.83 for OPE and 0.89 for OCC/HYDRO cases as CII does not have functionality to assign different values in one run. This is consistent with many stress analysis I have seen in the past performed as per company design specifications.
However CII Help provides recommendation to use f2=0.67 for all cases in UKOOA but different values in ISO-14692, they just call these values “Part Factor” which is a product of multiplying of SDF=0.67 by Occasional Load Factor 1 for SUS, 1.24 for OPE and 1.33 for OCC. BTW, it’s not quite clear how Occasional Load Factor can be assigned for OPE case as load case editor allows to do so only for OCC cases.
Could you please shed some light on this issue and advise on what system design factor f2 in fact should be used for UKOOA cases?

Kind Regards and Many thanks!

Vikoll

Yes, we use the Occasional Load Factor in the Load Case Editor to adjust the "part factor" in the ISO code. Here, the part factor gets its sense from the stress type.
We did not update the UKOOA methods. With UKOOA, changing the stress type will not affect our Occasional Load Factor value.
Perhaps this will work for you...
Using the UKOOA code, set all your stress types as OCC and manipulate the Occasional Load Factor to get the multipliers you want - 0.67, 0.83 & 0.89. I would first confirm that the stress formulations are the same for OPE, SUS & OCC and also confirm that the allowable limits are properly set.

Thanks Dave!
I take you response as a confirmation that design factors f2=0.67; 0.83 and 0.89 are in fact applicable for SUS, OPE and OCC load cases respectively in UKOOA analysis.
Allowable stress will be calculated based on values provided by FRP manufacture for given material multiplied by UKOOA allowable axial strength ratio R for each temperature case and by said above design factors. These coefficients in other words represent different "safety factors" for different load cases.

Thanks again and please let me know if I am missing something.

Vikoll

I did NOT confirm the design factor f2 for SUS, OPE & OCC using the UKOOA code.
I pointed out how you could manipulate the CAESAR II load case data to apply the values you suggest.