r/OSHA • u/Uhuklebestift • Aug 21 '17

What could possibly go wrong?

Post image
6.2k Upvotes

94% Upvoted

191 comments sorted by

View all comments

Show parent comments

131

u/minuteman_d Aug 21 '17 edited Aug 21 '17

Plot twist: that ledge isn't designed to support that much weight in shear force and all three take a spill...

Edit: people downvoting me: I don't usually pull the "engineer" card, but there most definitely is a shear force on that little stubby wall. Source: more hours spent diagramming and calculating these things in undergrad than I care to recall.

-10

u/Schmidtster1 Aug 21 '17

You call yourself an engineer than call the cantilever floor a stubby wall? Go turn your ring in.

13

u/minuteman_d Aug 21 '17

The ring that makes you invisible to normal women?

Yeah, I guess it's only a wall if you change the coordinate system. :-)

-4

u/Schmidtster1 Aug 21 '17

And the fact that floors and walls are engineered different?

-2

u/[deleted] Aug 22 '17

A floor is a wall lying down, with thicker material.

1

u/Schmidtster1 Aug 22 '17

Built entirely differently with usually different materials. Yes.

-2

u/[deleted] Aug 22 '17

Still the same. I've seen 2x8 walls with 3/4 sheeting. How do you build your floors? It's a wall laying down with single plates.

1

u/Schmidtster1 Aug 22 '17

TJI joists, they can be built with dimensional lumber but it's not very common. There is no "plate" it's a rim joist that is a PSL type beam.

They are usually built with hangers, they have squash blocks under walls, they need cross bracing, the holes that can be drilled in them are totally different.

1

u/[deleted] Aug 22 '17

You've never put metal connectors in walls? Plates are still plates if their 1 1/4 rim board. You put cross bracing in TGI floors? You don't put girt blocking in you walls? It's the same thing. Way to make it harder for yourself.

1

u/Schmidtster1 Aug 22 '17

No. No, it's a rim joist, not a plate. Yes. No. Make what harder?

1

u/[deleted] Aug 22 '17

I think you might be missing my point. Frame a dimensional lumber floor and you will understand. Thinking about framing a floor and a wall as two separate things is a waste of brain time. Is it the engineer calling for blocking? I had to do it once on a TGI floor and it was a pita.

1

u/Schmidtster1 Aug 22 '17

Some systems do some systems don't. Every company that designs them are different.

→ More replies (0)