Tower Crane Infill

[Galambos]

I have an 11'x11' tower crane opening in a PT slab that i will need to infill.

The existing drawings for the building do not address this condition, and the slab edge is currently not observable.

Before I can verify the condition, my detail will need to assume something, and therefore, Ive assumed that there are form saver connectors along the edge.

Can anyone tell me if I would need to specify a non-shrink mix for this infill?

I will specify "roughen, clean and apply bonding agent of exist surface."

Any other special considerations?

 

[hokie66]

Most likely there are connectors for the reinforcement. There must be some documentation, maybe in the project correspondence or RFI's. Why don't you ask the responsible design engineer? I would forget the bonding agent, they too often act to debond if the timing is a bit off.

 

[DST148]

11' x 11' is a bit large opening.
For infills about 6 to 7 feet in width in reinforced concrete slab, we have used normal weight concrete + sawcutting the edges
about 3/4" sloped to form dovetail like shape and used drilled in anchors around the four edges.