New Steel Joist To Existing
New Steel Joist To Existing
(OP)
Please see attached…
We obviously cannot erect this new OWSJ to existing as is shown in the attached with a pocket at each end.
Suggestion #1 - Provide a steel angle on left / south end, through-bolted to existing. I do not like this idea as I feel the axial load would be imposed to the 4” wythe only. Please comment.
Suggestion #2 – Remove (24’ lineal feet of) existing masonry courses, on left / south end, down to joist bearing, provide solid grouted bearing surface, with joist bearing plates.
Any other suggestions?
Thank you!
We obviously cannot erect this new OWSJ to existing as is shown in the attached with a pocket at each end.
Suggestion #1 - Provide a steel angle on left / south end, through-bolted to existing. I do not like this idea as I feel the axial load would be imposed to the 4” wythe only. Please comment.
Suggestion #2 – Remove (24’ lineal feet of) existing masonry courses, on left / south end, down to joist bearing, provide solid grouted bearing surface, with joist bearing plates.
Any other suggestions?
Thank you!






RE: New Steel Joist To Existing
RE: New Steel Joist To Existing
RE: New Steel Joist To Existing
BA
RE: New Steel Joist To Existing
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RE: New Steel Joist To Existing
RE: New Steel Joist To Existing
I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.
RE: New Steel Joist To Existing
Can any of you tell me what "up-charge" you've experienced? I will contact the vendors whom I typically deal with.
Can this be erected with one crane? This is a very small project of (10) joists.
Thank you all for your input!
RE: New Steel Joist To Existing
I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.
RE: New Steel Joist To Existing
Regarding the crane, it has already been decided that a single crane with a split hoist line (two lines) can be used, IF a crane is even necessary for these considerably light 18' joists.
As far as diaphragm shears, the added lateral forces applied to this small addition to this CMU building are negligible.
RE: New Steel Joist To Existing
I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.
RE: New Steel Joist To Existing
It seems to me that you'd need many, many joists to make them worth the while. Maybe you can even slide one end through and make them all up on one piece.
RE: New Steel Joist To Existing
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RE: New Steel Joist To Existing
For the 24' you could do this for every other member and have a header in between to reduce the masonry demo. The sketch shows what I mean for a 4' deck span.