Depth (Height) of a Thickened Edge Slab

[Andrew Wilkinson]

Hi all

Wondering what impact the depth of a thickened edge slab has on load bearing capacity? Or why different depths (heights) might be specified?
Around my parts it is common for a thickened edge to be 16*16 - but I'm wondering why not a 12 tall, 16 wide or a 24 tall? Does it help distribute eccentric loads - which is almost always the case in thickened edge scenarios?

Thanks!

 

[strucbells]

Different depth/heights of the thickened edge component can be specified for a few reasons: to reach frost depth, to meet shear or moment demands, to have adequate dead weight to resist uplift, to provide clearance for underground utilities passing beneath, etc.

If you have a specific project or example in mind, sharing more info would help get a better response.