Thanks guys.
The information in the Macomber catalog seems to be for a very similar product, but doesn't exactly suite what we're seeing.
I've made contact with SJI and they aren't aware of any JP joist designation. They suspect it could be from a light gauge supplier.
When I make more...
I am interested to hear from anyone that knows where I can find section properties for Nailable Steel Joists.
We have a set of drawings, for an existing structure that has a date in the early 70's. These drawings call out 10 JP 15 Nailable Steel Joists.
We have reached out to our contact at...