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Hi, I am not a geotechnical engineer but have a question about the parameters required to calculate a spring stiffness for soil/structure interaction. If I am looking at a site where an existing building with a basement is going to be demolished and replaced with a new taller building...

I am not concerned with the span of the decking, only the ability to transfer the compression force through the beam. The slab is forming the ground floor over the basement and will need to transfer the force both parallel and perpendicular to the span of the decking. My main concern is if the...

@MotorCity I am designing the retaining walls as being propped by the ground floor slab.

I am just trying to ensure the force is transferred across the ground floor slab to the opposite retaining wall so that it is in equilibrium. I don't think I need to have shear studs on the web for this but am more concerned with transferring the compression force through the slab to beam...

@kostast88 Thanks for the reply. I am not designing the beams as composite, I was specifically asking about the diaphragm action of a slab within the depth of the beam. In my case I am actually using the slab to prop basement retaining walls but am also interested in the detailing for an edge...

I am using a composite slab within the depth of a steel beam supported on angles but I am concerned if this will be sufficient to provide good diaphragm action. If the slab is fully within the depth of the beam would providing either shear studs or rebar welded to the webs be sufficient to...

I have attached the column to slab detail I referred to here.https://files.engineering.com/getfile.aspx?folder=aac04161-bd89-4068-8707-0fa75afbfbca&file=column_to_slab_detail.JPG

I am modelling a flat slab and would like to achieve a column to slab connection like shown on the attached image where the column reinforcement goes through the slab. Would it be more appropriate to model the column as pinned for the slab design or to model some stiffness in the connection...