I am building a house served by a well. The well pump cycles on at 40 and off at 60 psi. As I read Appendix P of the 2018 IRC which governs the area I am building in, paragraph AP201.1 2 states "Obtain the minimum daily static service pressure [psi (kPa)] available (as determined by the local water authority) at the water meter or other source of supply at the installation location." Based on that what static pressure do I use when calculating pipe sizes? If I use the low 40 and subtract out height losses I am starting at 31 psi. This seems like the wrong starting point.
So, with more research, I think I figured it out. Since I am using a well, I should use pressure loss across the system to calculate pipe size.
So, with more research, I think I figured it out. Since I am using a well, I should use pressure loss across the system to calculate pipe size.
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