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Hollowcore roof diaphragm

Hollowcore roof diaphragm

Hollowcore roof diaphragm

(OP)
I am working on a structure that has load bearing masonry walls with a hollowcore roof.  Where can I find the diaphragm capacity of an 8" hollowcore with 2" topping and reinforcing? Or is it as simple as finding my chord force and designing reinforcing such as in a beam?

RE: Hollowcore roof diaphragm

Contact your local hollowcore supplier. They should have the test data that you are looking for.

Spancrete is one of our local suppliers in this area and I know they have datasheets with this info. and their engineers can also walk you thru the procedure.

RE: Hollowcore roof diaphragm

Try the following book.  You'll want chapter 4.

MNL-126-98
PCI Manual for the Design of Hollow Core Slabs

http://www.pci.org

RE: Hollowcore roof diaphragm

I use the book that UcfSE mentioned.  The PCI design handbook also might be useful.

RE: Hollowcore roof diaphragm

You can analyze it as a deep beam to get your chord forces.  The keyways, along with the topping reinforcing will resist the shear.

UcfSE's reference, and the PCI manual is a good one.  If you don't have it re-post and I'll try to guide you through the procedure.

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