Ground Bearing Slab Load Distribution According to Panel Thickness

[cainy7]

Does Robot automatically assess how a load applied to a panel would distribute according to the panel thickness? 

Say for a panel with elastic supports defined for ground bearing slab had a 500mm thick shell assigned and a 100mm x100mm loaded area was applied, can/ would robot distribute this according to the panel thickness so the load will be considered as 1100mm x 1100mm (I believe this is considered for vertical loads on walls but couldn't find anything for slabs/ panels).

If not then I assume loads should be applied with consideration of a simple 45 degree load distribution through the thickness of the concrete so that at the bottom of the slab the loaded area is then representative of the load applied to the panel which would result in reduced bending moment and bearing pressures. I assume this is only really applicable for ground bearing slabs too because the panel is effectively supported in compression across the whole panel area according to the define elastic supports.

[Rafacascudo · Accepted solution]

No ,it will not " enlarge" the application area due to 45 degrees/ thickness .

To have this effect  ,I am afraid you will have to model in solid FEs structure type

[cainy7]

Thanks Rafa 

I assume when assessing the ground slab then the loaded area should be considered beforehand and applied to the panel as the loaded area at the bottom of the slab otherwise excessive moments will be generated?

I noticed that a TR34 calculation allowed for much less rebar than a design using a slab modelled in Robot hence the above queries. 

[Simau]

@cainy7 

You may test the diffusion at 45° but at mid-thickness of the slab