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Valued Contributor
CKDDIZ
Posts: 80
Registered: ‎05-29-2012
Accepted Solution

member design - upper chord

521 Views, 7 Replies
01-30-2013 07:24 AM

Hello,

please some advice or guidance how to check the upper chord and lower chord in RSA regarding to the buckling lenth.

 

Thanks

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Rafal.Gaweda
Posts: 5,581
Registered: ‎04-26-2010

Re: member design - upper chord

01-30-2013 11:59 PM in reply to: CKDDIZ

Two ways:

1. superbar with 2 elements (4 of them)  ; in one direction buckling coeff 1, in second 0.5

2. superbar with 8 bars, then define Internal bracings accordingly and proper coeffs



Rafal Gaweda
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Valued Contributor
CKDDIZ
Posts: 80
Registered: ‎05-29-2012

Re: member design - upper chord

01-31-2013 01:12 AM in reply to: Rafal.Gaweda

hello,

please for confirmation and a advice for lower chord.

 

Thanks

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Rafal.Gaweda
Posts: 5,581
Registered: ‎04-26-2010

Re: member design - upper chord

01-31-2013 07:27 AM in reply to: CKDDIZ

Upper chord

 

uc.jpg



Rafal Gaweda
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Rafal.Gaweda
Posts: 5,581
Registered: ‎04-26-2010

Re: member design - upper chord

01-31-2013 07:34 AM in reply to: CKDDIZ

Lower chord - if I understood your drwaing correctly

 

lowc.jpg



Rafal Gaweda
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Valued Contributor
CKDDIZ
Posts: 80
Registered: ‎05-29-2012

Re: member design - upper chord

01-31-2013 07:53 AM in reply to: Rafal.Gaweda

thanks

 

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Valued Contributor
CKDDIZ
Posts: 80
Registered: ‎05-29-2012

Re: member design - upper chord

02-04-2013 04:34 AM in reply to: CKDDIZ

Hello,

is this assumption correct? If not, please some advice

The beam top flange in compression is fully restrained because the concrete slabs are fully grouted and covered with a structural screed.

 

Thanks

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Product Support
Rafal.Gaweda
Posts: 5,581
Registered: ‎04-26-2010

Re: member design - upper chord

02-04-2013 05:18 AM in reply to: CKDDIZ

Try this:

 

fr.jpg



Rafal Gaweda
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