post tensioned flat slab
post tensioned flat slab
(OP)
I have an issue here. I'm calculating a post tensioned residential flat slab. The thing is that the columns that support the roof fall directly onto the slab. I was wondering what type of this methods should I use :
1- apply the column loads directly onto the slab as point loads. this could take a lot of time
2- apply a superimposed load equal to the forces that the roof will generate added to the loads that the slab will have such as partitions, floors etc. The problem that I see with it is that the floors may have an uplift by the additional tendons if there are areas where there are no roof columns over the slab.
what do you think !!!
1- apply the column loads directly onto the slab as point loads. this could take a lot of time
2- apply a superimposed load equal to the forces that the roof will generate added to the loads that the slab will have such as partitions, floors etc. The problem that I see with it is that the floors may have an uplift by the additional tendons if there are areas where there are no roof columns over the slab.
what do you think !!!






RE: post tensioned flat slab
Assuming that your column loads are not "trivial", then I would treat them as point loads. (And, of course, check for possible uplift loads due to wind).
RE: post tensioned flat slab
In addition, would add a couple of non-tensioned portions of strand or rebar at the point of application.
In the analysis, would also pay particular attention to moment and shear for punching shear.
RE: post tensioned flat slab