About Column Least Dimension 1

[dr. rifat]

Hello Engineers,

For G+10 storied concrete building is it correct to choose column least dimension 12 in?? Some expert says for 10+ storied rcc building it is best to choose column least dimension 15 in.But my structure says it is satisfied in 12 inch.

N.B.=My column sizes are

(12 in x 30 in)
(12 in x 36 in)
(12 in x 24 in)

Whats your thoughts/comments??

RIFAT

 

[mylife2014]

What is the tributary or column to column distance?
Also, what is the occupancy?

 

[dr. rifat]

About 180 sft for 12 in x 36 in columnn,live load is 80 psf.


RIFAT

 

[mylife2014]

Are you in high seismic region?

 

[mylife2014]

If it will be constructed in a seismic region, in my opinion I would require to increase those sections.
Because I think those sizes won't satisfy drift requirements.

 

[dr. rifat]

Then whats your opinion??

RIFAT

 

[mylife2014]

increase the sizes and check all the necessary code requirements to be satisfied.

 

[JAE]

12 inches is a very small column.

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[dr. rifat]

That means we have to choose minimum 15 inches least dimension.

RIFAT

 

[txeng91]

12" is a relatively small column width for a multi-story building. Not sure what your story-story height is but I would make sure the column width meets minimum KL/r requirements.

 

[BAretired]

I don't believe there is enough information for anyone to make a sound judgment.

BA

 

[Trenno]

Be sure to check that fire design is satisfied.

I'd suspect you'd struggle making 250mm wide columns work, unless you increase the length by a minimum of 4x the width (ie 1000mm).

In saying that you could have a column every 3m... the question really need more info...