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RC slab supports

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n3jc

Civil/Environmental
Nov 7, 2016
187
Im designing RC slab - an extension of existing slab above house entrance.
The only load is dead load and snow.

Slab is 140 mm thick. I will anchor it to the existing slab also 140 mm thick(in the middle).
One edge of a slab in unsupported and one is partly supported (on the wall).

I already designed a slab and it looks fine, however I m not comfortable about the fact that the slab system pretty much depends only on anchors (no bending capacity, only shear on rebars) especially because I have free edges.

What is your experience in this topic, any suggestion? should I worry?

SLAB_SNEG_weueye.png


slab_a_qhdlbo.png
 
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If you can't develop moment capacity in the connection to the existing slab then this will not work with this configuration.

You could add a column at the free corner and some edge beams.
 
How can you possibly say you have "designed" the slab? There has been no attempt to satisfy statics or equilibrium.
 
Is the new (or existing) slab tied into [what appears to be] the supporting wall with re-bar that can transfer the developed forces? If that is the case, you might be in business. I'd also closely check deflection.
 
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