The more I think about it the more it seems like a truss system for foundations.
Might be because of transportation costs, I’m guessing. They make them here in Central PA someplace, so that might be the difference.
From a MEP standpoint, they’re a pain in the arse to wire up when the person wants a finished basement. They need special boxes, for one.
“steel-reinforced concrete studs” is what the link called them (#12 in the illustration). It also mentioned a wood nailer for drywall.
I’ve haven’t seen anything like this in Colorado.
I inspected one yesturday 6 years old with no visable issues. Although the exterior outside corner needed to be caulked were it was visable. It was a 90 degree corner that looked like it was a 45 degree angle on the sections.
Inspected a PWF a few weeks ago. From what I’ve learned the systems are less expensive than a CMU or poured foundation and easier to install as well as easy to finish/drywall. The issue is these systems must be installed using a good plan and by a competent contractor. Apparently it’s not uncommon for these systems to be installed, or attempted, by unqualified individuals.
Interesting note:
There are many of these in my area, as Mark said. Also, This system has an interior attached foam insulation board. The IRC states that no foam insulation can be left uncovered or exposed. So, if you see one, recommend drywall or it is not a complete assembly according to UL.
Just a FYI!