column splice for 16 to 24 rebars
column splice for 16 to 24 rebars
(OP)
I know splice for column rebars is at midspan of columns.. but how do you distribute them so they won't be at one layer or location for a small 400x500mm 16 to 24 rebar column? any papers or guidelines about this in the net for comparisons? thanks.






RE: column splice for 16 to 24 rebars
Dik
RE: column splice for 16 to 24 rebars
The scheduler will need to crank the bars at then it's up to the site guys to place them properly. You can specify a high slump mix which should help to prevent any honeycombing during placement.
RE: column splice for 16 to 24 rebars
RE: column splice for 16 to 24 rebars
Midheight is the only place one can slice bars in a column. But for 12 bars and splicing them to add another floor (because the existing bars are short), the percentage of steel at midheight reaches 4% already. I'm imagining all the bars at midheight are double because it is only there that splices can be made (you can't splice near floor level). Is this how you really splice them? (as long as the midheight is or near 4% it is ok if the bars are doubled)?
RE: column splice for 16 to 24 rebars
Mike McCann
MMC Engineering
http://mmcengineering.tripod.com
RE: column splice for 16 to 24 rebars
You say "16 or 24 bar columns". That sounds like an excessive number of bars. In a 500mm square column with standard cover and ties, 16 bars means bars are spaced at less than 4" (100mm) apart. The use of many small diameter bars might shorten splices, but where you don't need closely-spaced bars for confinement in high seismic applications, you should use fewer bars of larger diameter. Doing this facilitates placing and eliminates excessive ties.
RE: column splice for 16 to 24 rebars
RE: column splice for 16 to 24 rebars
RE: column splice for 16 to 24 rebars
RE: column splice for 16 to 24 rebars
RE: column splice for 16 to 24 rebars
why, hokie, what is wrong with concrete special moment frame?
RE: column splice for 16 to 24 rebars
I asked you some questions first. If you expect answers to yours, perhaps you should respond to other's queries.
RE: column splice for 16 to 24 rebars
RE: column splice for 16 to 24 rebars
RE: column splice for 16 to 24 rebars
so what seismic provision do you use in concrete building? all shear wall? but space opening is limited for shear wall design. In my 3-storey building designed, the front and back have to be entirely open so the only supports are the columns and only special moment frame the choice.
RE: column splice for 16 to 24 rebars
RE: column splice for 16 to 24 rebars
Mike McCann
MMC Engineering
http://mmcengineering.tripod.com
RE: column splice for 16 to 24 rebars
In Russia building design you!