I am reviewing a parking garage that is 5-stories in height fully equipped with an NFPA 13 sprinkler system.
The calculations provided for floors 4 and 5 indicate an elevation of 0 at the 3rd floor riser, with the elevations going in the negative values back to the hydrant.
Floor 3 calculations indicate an elevation of 0 at the Floor 2 riser. Floor 2 and 1 calculations show an elevation of 0 at the hydrant where the flow test was conducted.
Does the location of the "0" elevation affect the calculations demand, if the total change in elevation is still accounted for?
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