Concrete Column Splice 1

[mijowe]

I have a two story concrete column where the rebar was spliced with a compression lap in the middle of the column. If there is no moment on the column do I have a concern?

 

[hokie66]

There is always moment on a column. All codes require columns to be designed for minimum eccentricity if nothing else. If your two story high column has a reinforcing bar compression only splice at midheight, you have an unstable condition.

 

[mijowe]

True, however the moment is not enough to bring any of the bars into tension. I do think i have a proble, just fishing for additional thoughts

 

[phuduhudu]

As I understand it, you do have a lap of the bars, it is just not enough to transfer the full bar tension. Check how much tension it can transfer and then check the column for it's nominal moment using the reduced amount of steel for tension.



Carl Bauer

http://www.bauerconsultbotswana.com

 

[hokie66]

Perhaps I read your post wrong. I took the compression splice to mean mechanical splice, but now I see the word "lap". Thanks to Carl for setting me right, but I would still be concerned about the lap of all the bars midheight of a two story high column. I always require them to be continuous, or if the bars are too long, stagger the laps. But what I would do about it would depend on how hard the column is working.