Neat Connection

[dik]

On one of my projects, the detailer is using the attached with end plates and can be used with clip angles. It's for attachment of beams to both sides of a column. It allows the first beam to be placed and secured with one bolt and the other can then be placed. The 'cutout' is only ln one side of the column. It may be common, but the first time I've seen it used.

-----*****-----
So strange to see the singularity approaching while the entire planet is rapidly turning into a hellscape. -John Coates

-Dik

 

[271828]

I've seen something like that with one entire row omitted, not just one bolt in a row.

 

[dik]

A bolt in one row. I'd not seen it before. It's so simple and easy to implement. It's not often that I encounter something 'neat'. With clip angles, it's a matter of cutting the length by 3" or so; an end plate requires the removal of material.

-----*****-----
So strange to see the singularity approaching while the entire planet is rapidly turning into a hellscape. -John Coates

-Dik

 

[sbisteel]

Way easier to just go with 3 rows on one side, 4 rows on the opposite of a shared connection. In the states OSHA requires (2) bolts before removing rigging anyways, which this wouldn't satisfy.

 

[skeletron]

Yep. I've seen that a lot on industrial projects.

 

[JoshPlumSE]

Yes, I've seen these before. I think they're pretty cool too. Simple, innovative way to obey OSHA erection requirements without introducing a ton of cost. Though I have to agree with others. I've seen the entire row excluded more often....

 

[dik]

or 3 rows on the opposite side, staggered by 3" so it doesn't matter which side the first beam is connected to the column. I didn't know that OSHA 'requires two bolts... I'm not aware of anything similar in Canada.

-----*****-----
So strange to see the singularity approaching while the entire planet is rapidly turning into a hellscape. -John Coates

-Dik

 

[mfrad]

The steel beam may twist with only one bolt. Could be a problem for someone walking on the beam.

 

[dik]

Possible... I'll check with the fabricator if this is an issue.
thanks... likely more stable than slinging it.

-----*****-----
So strange to see the singularity approaching while the entire planet is rapidly turning into a hellscape. -John Coates

-Dik

 

[dik]

I checked with the fabricator, and not an issue. The far end of the beam is secured with all fasteners and the eccentricity is small and there does not seem to be any 'twisting' when working at the end with a single bolt. He says it simplifies erection considerably. It's the first time I've encountered this. My involvement, the fabricator, one of my clients asked if it was OK to do it this way. I'm really happy with it, and have written SMath programs to accommodate this type of connection. I plan to use it in future.

Does OSHA require two bolts at the end connection, or is one bolt at one end and six at the other OK?

-----*****-----
So strange to see the singularity approaching while the entire planet is rapidly turning into a hellscape. -John Coates

-Dik

 

[JoshPlumSE]

I could be wrong, but my impression was merely that OSHA doesn't allow two beams in a connection to be unsupported at the same time. I just looked it up and found this. With a very similar connection

https://www.osha.gov/laws-regs/regulations/standardnumber/1926/1926SubpartRAppH

 

[Tomfh]

Why notch one side only? Is it so the connection has more bolts when finished? E.g. 5 bolts rather than 4?

 

[dik]

5 bolts if you need the added strength, or want it. If a clip angle you can save 3" of clip angle per connection and have 5 bolts or save 6" of clip angle and use 4 bolts... and safely erect the steel member, to boot... by non-manditory, are they saying something is recommended, but not required?

-----*****-----
So strange to see the singularity approaching while the entire planet is rapidly turning into a hellscape. -John Coates

-Dik