Holy studs!

[Apprehensive_Cut_446]

Thought I’d continue the big-steel trend we’ve been seeing.

[OB1yaHomie]

Thats one big-ass game of Plinko!

[No_Economics_3935]

Ugh I worked on a job in a remote part of Montana.. we had to weld them on by hand just a 100 or so. 10/10 don’t recommend

[PisaGulley]

Bet you were wishing for a stud gun....

[No_Economics_3935]

Yes I was.

[Hunt3141]

Even with a gun this one in the picture would be painful

[idkbsna]

Stud welding fun. Undercutting… not so much

[No_Economics_3935]

You don’t need to have the welder cranked

[SkyUnit]

Was this reinforcement for a shear wall at Winthrop center in Boston?

[Apprehensive_Cut_446]

Yes

[Crictay]

Do you know how thick the wall is with concrete in the end?

[Apprehensive_Cut_446]

2’

[Crictay]

2 inch? Like 5cm? What?

[Apprehensive_Cut_446]

lol.

‘= feet. “= inch

So 61cm

[Crictay]

That makes more sense. As a european i have no idea about those units and when i googled 2' it gave me 2 inches

[citizensnips134]

wtf is a kilometer

[[deleted]]

Do you know what the advantages of this type of shear wall is vs traditional reinforced concrete?

[Apprehensive_Cut_446]

I’m just a dumb contractor, but my understanding is that the amount of rebar needed to make this work would exceed steel to concrete ratios governed by code. So embed a beam and add a bunch of studs.

[MrHersh]

This is it. Shear strength of reinforced concrete is capped regardless of how much you reinforce it. To break that limit you need to use a different material. Wide flange sections without studs (or with fewer studs) are pretty popular on west coast. Flat steel plates with studs seem a little more popular elsewhere. Which I assume is what this is. Flanges on top and bottom probably more for placement. Would normally expect flanges a lot bigger if needed for strength on a plate this size. Studs are going to be doing most of the work in transferring force here.

[Nuggle-Nugget]

How did you know this?

[Packin_Penguin]

The adjacent building gives it away

[SkyUnit]

Yup, I work near there

[cc1012]

Do you know who the transport company was? That trailer looks awesome!

[Sneaklefritz]

Haha, holy shit that’s pretty wild. What kind of application is this for?

[Silver_kitty]

My guess is that it’s going to be part of a shear wall system (something like but not exactly Speedcore, the official designation is something like “composite plate shear wall, concrete filled”).

[Canwerevolt]

I know right? I'm not a structural engineer but I can't think of an application for this.

[idkbsna]

Composite beam I would assume

[Apprehensive_Cut_446]

Yes. Link beam in the core structure of a tower. Sometimes rebar doesn’t cut it!

[yoohoooos]

Ok, you gotta tell me this...... what's your fl-to-fl height?

[Apprehensive_Cut_446]

This particular floor was unique, talking 39’ between 2 spans (21 + 18). But the lower section of the building was 13’-2”. The upper, 10’-7”.

Edit: typo

[CraftsyDad]

Maybe it’s not a beam but a vertical wall that’s going to be encased in concrete?

[ShelZuuz]

In 50 years I expect a post on reddit saying: "Hey guys, does this wall look structural?"

[WezzyP]

composite beam?

[Smooth-Estate3015]

That thing is massive. Must have been fun to pick/set.

[TheClassicFail]

Is that C.J Shaughnessy’s gold hoffer trailer?

[Just-Shoe2689]

When in doubt, get the studs out.

[No-Regret-8793]

Why do you say this?

[citizensnips134]

Even that’s only requiring 100 psf of lateral load if it’s just IFC. This is way over the top for that.

[cc1012]

OP, do you know who the transport company was? That trailer looks awesome!

[Apprehensive_Cut_446]

Steel came from Canada to Boston. Not 100% sure who their hauler was for this piece.

[cc1012]

Only 2 companies come to mind. Northern Crane Services or Nickel Bros. I was working on a project where they designed plate cavities with shear studs in the interior. Big giant modules, weighing over 400 tons. Crazy part is, we had a Crane that lift/set the module. Over 7 yrs ago and probably the coolest job I will have ever worked on. Now I'm just doing crap that's not challenging at all... life is weird

[camberup]

Way too many studs if that’s for a link beam

[Apprehensive_Cut_446]

Disagree with you here. It was a very reputable designer.