Strange Light Gage Roof Purlins
Strange Light Gage Roof Purlins
(OP)
Has anyone run across these before? I would love to not have to determine their strength by hand.
They are some sort of light gage purlins whose top flanges tie into the subsequent member. I have attached a few photos.

They are some sort of light gage purlins whose top flanges tie into the subsequent member. I have attached a few photos.







RE: Strange Light Gage Roof Purlins
I had a recent existing building that I worked on from the 70's that had Robertson 7-1/2" deep 18 gage roof deck that looked just like this. It spanned 20' or so.
RE: Strange Light Gage Roof Purlins
In the first photo you can see some sort of light gage decking on top of it so I was hesitant to call it a deck.
RE: Strange Light Gage Roof Purlins
RE: Strange Light Gage Roof Purlins
RE: Strange Light Gage Roof Purlins