Column Splice
Column Splice
(OP)
Hi,
I have a question regarding column splice design. I have a W14x311 column which needs to be spliced. The gap between the upper column and lower column is zero. The upper column is bearing on lower column. Compression forces are 3000kips and 2000kips. At the splice location as upper column is bearing on lower column, I tending not the design the splice for 3000kips compression force. I am designing the column splice only for 2000k tension force. Does this make sense? Is this addressed anywhere in AISC code? Thanks
I have a question regarding column splice design. I have a W14x311 column which needs to be spliced. The gap between the upper column and lower column is zero. The upper column is bearing on lower column. Compression forces are 3000kips and 2000kips. At the splice location as upper column is bearing on lower column, I tending not the design the splice for 3000kips compression force. I am designing the column splice only for 2000k tension force. Does this make sense? Is this addressed anywhere in AISC code? Thanks






RE: Column Splice
RE: Column Splice
Also as MotorCity has noted, be sure to design the splice for loads other than axial, such as shear and moment. But if your columns are entirely gravity resistance and not part of lateral-force resisting system, then I would imagine you have no shear or moment.
RE: Column Splice
Or just ask random people on the internet, it's only 2 or 3 million pounds.
RE: Column Splice
1) No, not for columns. You do, at least in part, though for other things like truss compression chords etc.
2) For columns, the requirements are:
- the connection parts have to keep the splice together (vague).
- if shims are not used, the gap has to be 1/16" or less.
- if shims are are used, the gap has to be 1/4" or less and the shims may not be tapered.
You probably want to get your hands on an AISC Code of Standard Practice. A lot of this kind of thing lives there.
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.