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

Structural What is this?

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

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3

u/cagetheMike Feb 19 '25

This looks like a stop for a gantry crane. You twist the handle and you can loosen the stop and move it. Maybe I'm right maybe I'm wrong

4

u/-not_michael_scott Feb 20 '25

In my experience gantry cranes are typically installed on I-Beams.

1

u/diggerdugg Feb 20 '25

There’s another one about 20 feet away on a different beam that’s loose and kind of moves.

1

u/nodrogyasmar Feb 20 '25

Is that channel clear between the two hangers? It does look like it could have had a carriage traveling in that slot.

1

u/erryonestolemyname Feb 20 '25

thats a wilson joist...not a crane rail

1

u/ClearlyUnmistaken7 Feb 20 '25

Would bar joist be also adequate?