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member design - upper chord

7 REPLIES 7
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Message 1 of 8
CKDDIZ
1256 Views, 7 Replies

member design - upper chord

Hello,

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

 

Thanks

7 REPLIES 7
Message 2 of 8
Rafal.Gaweda
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
Message 3 of 8
CKDDIZ
in reply to: Rafal.Gaweda

hello,

please for confirmation and a advice for lower chord.

 

Thanks

Message 4 of 8
Rafal.Gaweda
in reply to: CKDDIZ

Upper chord

 

uc.jpg



Rafal Gaweda
Message 5 of 8
Rafal.Gaweda
in reply to: CKDDIZ

Lower chord - if I understood your drwaing correctly

 

lowc.jpg



Rafal Gaweda
Message 6 of 8
CKDDIZ
in reply to: Rafal.Gaweda

thanks

 

Message 7 of 8
CKDDIZ
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

Message 8 of 8
Rafal.Gaweda
in reply to: CKDDIZ

Try this:

 

fr.jpg



Rafal Gaweda

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