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Diaphragms in CF Joist Floors

Diaphragms in CF Joist Floors

Diaphragms in CF Joist Floors

(OP)
I have little experience in CF joist floors. When using wood or similar floor sheathing are there diaphragm values for various configurations, i.e. panel configuration, blocked vs. unblocked etc., similar to the diagrams for wood framing?

I am looking at using a concrete panel floor system on CF joists and saw that they only published diaphragm values for one direction, along the joists, unblocked, panels staggered. After speaking to them about the other direction they informed me that there is zero diaphragm value, even if blocked. I have not looked into this before and was surprised but I haven't found any info to agree/disagree with this. They told me that CF is usually done with a diaphragm in one direction and perimeter steel girts in the other direction to distribute the load to the lfrs. Is this correct?

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