untopped hollow core plank diaphragm
untopped hollow core plank diaphragm
(OP)
I have been searching for a while and cannot get to a definitive answer - For a building that is seismic design category C or lower in NY, is a topping slab required for the diaphragm? I haven't found anything that explicitly state untopped is not permitted, but don't know if I am missing anything.






RE: untopped hollow core plank diaphragm
Notching out edge voids in adjacent panels and grout in bent rebars to create a key is commonly done.
Also the supplier can cast in weld plates - this is done with double tees, but not common with plank.