Equivalent frame analysis 4

[LMW.dk]

Hey guys. Can someone tell me if i have done the 'equavalent frame analysis' right? And can someone tell me why all the slabs is 7200? I mean in line 1 and 2 the slab should be 6000 and as well in line 3 and 4.
Thanks in advance

http://files.engineering.com/getfil...e1df-43b9-82d3-75fc5a860ca8&file=Subframe.jpg

http://files.engineering.com/getfile.aspx?folder=c6430cbc-6a07-4079-8b9a-62c01352324b&file=slab.jpg

 

[Ingenuity]

LMW.dk,

7200mm is the transverse tributary width for the LINE B frame run.

3600mm from span A-B (ie 50% of 7200mm), and similarly, 3600mm from span B-C, for a total of 7200mm panel width.

The 1800mm red lines designate your half column-strips.

 

[LMW.dk]

See the attached file.
So are these areas correct for my slap?

I'm really confused regarding how to divide my slabs. I have used this from the eurocode see attachement 2

http://files.engineering.com/getfile.aspx?folder=3b755577-4b4b-45cc-828f-fa53faee86ed&file=slab.jpg

http://files.engineering.com/getfil...d668&file=DIVSION_OF_PANELS_IN_FLAT_SLABS.jpg

 

[LMW.dk]

Can anyone answer?

 

[LMW.dk]

Guys please i really need your help..

 

[TehMightyEngineer]

Ingenuity already more or less answered your question and within an hour of your original question. If you need help that quickly ask whatever engineer is mentoring you. Otherwise you'll probably have to wait a bit for anyone else to answer. In the meantime I'd read up on equivalent frame analysis and you might just find your answer.

Professional Engineer (ME, NH, MA) Structural Engineer (IL)
American Concrete Industries

http://www.americanconcrete.com

 

[dik]

It appears that your spans are different;I'd typically run two transverse strips to determine the locations of the Point of Zero Shear (PZS) and use these to determine the tributary widths. You have two strips, one at the core and one elsewhere and use a straight line to connect the two PZS lines. I typically treated slab to core attachment as generally approaching a fixed end condition. Haven't done an equivalent frame for a long while.

Dik