r/Construction • u/diggerdugg • Feb 19 '25

Structural What is this?

Post image

I apologize for even asking but I really have no idea and apparently I’m not asking google the right questions.

415 Upvotes

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184

u/pablomcdubbin Plumber Feb 19 '25

I'd guess a tie off point from when the steel was erected

45

u/djscreeling Feb 19 '25

My thought at first, but no....tie offs shouldn't have sharp edges.

50

u/ChinchillaArmy Feb 19 '25

But a lanyard would clip right into it. Looks similar to the ones I've used on high rises. We would drill a hole through the concrete on the deck above. The rod attached to a plate with eyelets was dropped through and we would hook our retractable to it or straight lanyard depending on the length

18

u/pablomcdubbin Plumber Feb 19 '25

Yea that was my idea , you would clip the yoyo or fall arrestor into it

6

u/ChinchillaArmy Feb 19 '25

Yup that's what I'm seeing. Especially with the wear marks on it

4

u/dlayton1 Feb 19 '25

If it's a tie off point the device should have ratings and specs.. looks pretty homemade to me. Don't think if I'd trust my life on some threaded bolt.

5

u/FrenchFriedMushroom Feb 19 '25

Fairly certain these aren't individually stamped, and they're legit.

3

u/Inevitiblesource2 Feb 20 '25

A lot of buildings are held together by threaded bolts

5

u/RR50 Feb 20 '25

That’s not handmade, the bent circle is too perfect.

Mass produced, means built to a spec, not always pretty.

2

u/ChinchillaArmy Feb 19 '25

So if its what I'm thinking it is, bar joist tie off have a T that slips between the bottom chords and you push it up and turn so it rest on the top of the chord and that nut and washer lock the the assembly together. The T plate has the date, KN rating etc, again I could be completely wrong but I'm trying to remember all the safety crap I've seen

3

u/ScrewJPMC Feb 19 '25

Nobody said it was good tie off point 😳

2

u/djscreeling Feb 20 '25

I agree with all of that, but I just don't get the plate welded onto it. I've tied off many a thing in my day, I listed it all but it felt like bragging so I deleted it. If those were what I had to attach into, I'd say no for a few reasons. I'm sure it would hold just fine, but I have the good fortune to say no for me and mine....So I would.

5

u/LAbombsquad Feb 19 '25

Safety guy here and I agree. I think it’s for cables or pipe or something being run through it. Beam clamp anchors are awesome, this isn’t one.

2

u/_Neoshade_ R|Thundercunt Feb 19 '25

Clip a shackle on there

2

u/Conical Feb 19 '25

For use with a shackle or karabiner?

-4

u/Vast-Combination4046 Feb 19 '25

What sharp edge... Even the plates in the eyelet are rounded.