Originally Posted By: Jay Moge
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John: How do you calculate all the variables threwout the house concerning water flow. what i mean is, if you calculate g.p.m with a guage or a bucket at an outside spigot you could get 10gpm. but at the kit faucet you get 7gpm because of the sizing of internals in faucet. or the shower could have a 1.6gpm “water saver” shower head and you get 2gpm. but if the internal pluming is all 1/2’’ but the main is 3/4’’ is there a difference in your report to the actual g.p.m at the main, or is it the “working” g.p.m. at each fixture. I too have been asked to test and document the flow of the house, the best i could tell them is that there are too many variable to accuratly determine presice g.p.m.s, but at the time of the inspection the working pressure at each fixture seemed adiquate for it’s intended purpose.
I’m not trying to rail road you John, dust mearly inquiring as to how to approach such a situation.