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## Main Question or Discussion Point

I have a problem where I want to find out the static pressure over a city in a water pipe system. As I know the elevations over the city I was first thinking of just using p = rho * g * h, but this should only apply if the pipe system were under water (if I use the density of water at least).

So my second thought were to use the different pressure manometers that exists in the system. These are piezometers which should give me the static pressure at that point. And this leads to my confusion, I believe that the static pressure should be constant, and these manometers should be giving me the value I need as It's not dependent on fluid velocity. But these values varies quite a lot, which indicates that the dynamic pressure has something to do with these values.

After this I started to calculate on a extended Bernoulli whereas I can get the flow velocity at some points as well, but it feels like I'm really making this a lot harder than what it should be.

Can someone explain why the manometers which is of piezo type varies so much in value?

And how can how can I utilize the manometers at the different locations to get the static pressure?

Thanks in advance!

So my second thought were to use the different pressure manometers that exists in the system. These are piezometers which should give me the static pressure at that point. And this leads to my confusion, I believe that the static pressure should be constant, and these manometers should be giving me the value I need as It's not dependent on fluid velocity. But these values varies quite a lot, which indicates that the dynamic pressure has something to do with these values.

After this I started to calculate on a extended Bernoulli whereas I can get the flow velocity at some points as well, but it feels like I'm really making this a lot harder than what it should be.

Can someone explain why the manometers which is of piezo type varies so much in value?

And how can how can I utilize the manometers at the different locations to get the static pressure?

Thanks in advance!