Pressure Loss per Floor

[NJ1]

I can not remember how much pressure you loose in a multiple floor building. I think it is 3-4 psi per floor up to the roof. I just cant find it in the nfpa standards. Any help

 

[skdesigner]

0.433 psi/ft of head

 

[sprink1313]

.433 p.s.i. per foot of elevation change.

If we all agreed, we would be Communists.- Me.

 

[NJ1]

Oh yeah. I knew I was close about numbers but I screwed up on decimals.
Thanks guys