Integrated Buildings & Structures

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Steel composite floors load distribution

  • 1.  Steel composite floors load distribution

    Posted 12-14-2020 08:55 AM
    Hi Guys!!
    I'm having a question regrading the load distribution of steel composite decking floors. once we are using decking sheet under the slab, is it okay to consider two way load distribution even Ly/lx greater than 2. what would be more realistic?

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    Kuranage Akila Nadishan Perera A.M.ASCE
    Ja-Ela
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  • 2.  RE: Steel composite floors load distribution

    Posted 12-16-2020 06:50 PM

    Dear Kuranage, it is an interesting question. 

    Load distribution in slabs depends on the way the slab is supported and if this support is really working as a restriction for deflections or rotations (shear studs also play an important role here). For composite beams (with steel deck) you should be using ribs in one direction. These ribs direct the load to girders, and this should be a one-way slab. If you are using ribs in longitudinal and transverse directions, so you have a two-way slab.

    I suggest you visit the webpage of the Steel Deck Institute: https://www.sdi.org/. There you could find free resources on this subject.

    Regards, AG



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    Andres Guzman Ing., M.ASCE
    Associate Professor
    UNIVERSIDAD DEL NORTE
    Barranquilla
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  • 3.  RE: Steel composite floors load distribution

    Posted 12-17-2020 09:11 AM

    Dear Professor,

    Thank a lot for your valuable comments.



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    Kuranage Akila Nadishan Perera A.M.ASCE
    Ja-Ela
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