Hey all, got a weird one. I'm going to go poke around in the field and dig some holes, but I've been asked for some opinions on a steel building from probably the 50s. It's a single storey portal frame building. They've done an underground scan and it doesn't look like there's an obvious footing, and there's no rebar in the slab. There's a demoed hole in part of the slab away from the columns and I can confirm there's no bar there.
That doesn't mean there isn't grade beam or thickened slab reinforcement that they didn't see, but I'm not aware of it currently.
Oddly, though, they think there's a steel beam under the slab that goes ~3ft out from the column towards the inside of the building. I've had UG scans be confused before, but presuming this is correct has anyone seen this before
?
My initial thoughts are either:
*This was placed and then they poured concrete around it instead of making a reinforced footing.
*This has a tension tie attached to the right hand end of it and the column just bears on a small footing for gravity load. I don't know why they'd go to the trouble of the beam though.
That doesn't mean there isn't grade beam or thickened slab reinforcement that they didn't see, but I'm not aware of it currently.
Oddly, though, they think there's a steel beam under the slab that goes ~3ft out from the column towards the inside of the building. I've had UG scans be confused before, but presuming this is correct has anyone seen this before
My initial thoughts are either:
*This was placed and then they poured concrete around it instead of making a reinforced footing.
*This has a tension tie attached to the right hand end of it and the column just bears on a small footing for gravity load. I don't know why they'd go to the trouble of the beam though.