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nikhilbhalerao
SEFI Member
Joined: 19 Jul 2008
Posts: 2
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 Posted: Fri Dec 26, 2008 7:25 amPost subject: cutouts and sunk portion in flat slab |
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Dear members,
Can we provide cutouts in flat slabs? up to what extent they can affect the behaviour of flat slab. Also what to do where slab to be sunk?
Nikhil
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mkalgal
Silver Sponsor
Joined: 26 Jan 2003
Posts: 54
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| Posted: Fri Dec 26, 2008 11:10 amPost subject: |
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Dear Nikhil,
I am reproducing the reply below which was posted under different section in this E-conf.
Fully sunken slabs are not possible. Providing Flat slabs with varying moments of inertia(slightly sunken slab) can be done and has been done. Care has to be taken in modeling. The following article by Dr. Bijan Aalami, a renowned expert who developed the ADAPT software is a useful read.
http://www.adaptsoft.com/resources/Structural_Modeling_Slabs_CI_Dec2005.pdf
As regards cut-outs, please avoid major cut outs in column strips. Following two articles throw some light on cut-outs and openings
http://www.cement.org/buildings/Openings%20in%20Two%20Way%20Slabs.pdf
http://www.ptia.org.au/Photos/Penetrations%20in%20P-T%20slabs.pdf
regards
Kalgal |
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