column bases with large moments
column bases with large moments
(OP)
I am designing a stiffened column base plate per "The Design of Welded Structures" book written by Omer W. Blodgett, specifically the detail per the attachment.
Can anybody help me with a couple questions?
1. What is the correct method in determining the base plate thickness when using this detail? I'm assuming AISC Design Guide #1 does not apply because of the stiffened elements welded to the column??
2. Why is there a gap shown between the bottom of the stiffening channel and the top of the base plate in the attached detail?
Thank you!
Can anybody help me with a couple questions?
1. What is the correct method in determining the base plate thickness when using this detail? I'm assuming AISC Design Guide #1 does not apply because of the stiffened elements welded to the column??
2. Why is there a gap shown between the bottom of the stiffening channel and the top of the base plate in the attached detail?
Thank you!






RE: column bases with large moments
2) Frankly, I've always wondered about the "gap" myself. One explanation is that natural cross section tolerances in the channels would preclude a tight bearing fit. Additionally, the base plate to column fillet welds, if present, would interfere with channel placement. Another explanation is that the flow of forces is more predictable with the gap. Without the gap, some of the anchor bolt tension would probably be flowing through the base plates.
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: column bases with large moments
BA
RE: column bases with large moments
Was there supposed to be an attachment to your response? Thanks.
RE: column bases with large moments
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: column bases with large moments
The article I mentioned is the Blodgett article which you attached in your post. The last paragraph explains why the channels were set clear of the bearing.
BA
RE: column bases with large moments