Plate girder designation

[pwmiller54]

Can anyone tell me what these are? I know they are plate girders. I just want to know what each number means.

PG72x36x1300
PG66x30x970

Thanks, Paul.

 

[r13]

Just a guess - Depth x flange width x unit weight

 

[271828]

You're probably going to have to ask, or maybe find a legend on the drawings.