Hi,


I wish to get information as to why the section properties for pipes in Robot's database for AISC sections is different from that shown in the AISC tables itself.

Specific example is "P5" in Robot which I understand is "Pipe5SCH40" in AISC tables, Robot specifies this has 6.12mm thickness whereas in the AISC tables, it is 6.55mm.


Thank you very much,


Rico