Conversion factor from Head in feet of water to PSI

[jvboyer]

When reviewing the EPAnet report for a recent project, it appears that an incorrect conversion factor is being used to convert pressure head (in feet of water) to psi.  The conversion factor should be 0.4335, so for a pressure head of 80.30 feet the converted value should be 34.81 psi.  The report is indicating a pressure in psi of -132.56, which makes no sense.  I've attached a screen shot of the report.

The report examples in the Users Guide appear to be using the correct conversion factor.  I haven't been able to figure out where to check the conversion factor the software is using, or how to correct or override it.  Any guidance would be appreciated.  Thanks!

[marijan gorjup]

Could you please attach the whole file?

[jvboyer]

The full report is attached.

[jvboyer]

Also, here is the actual EPAnet file.

[marijan gorjup]

I checked the file. Please check again if "Total head" variables at reservoirs are really 0.
Variable head is equal the sum of pressure and node elevation. I think this should solve your problem.

Dne petek, 22. september 2017 14.35.21 UTC+2 je oseba jvboyer napisala:

[jvboyer]

Thank you!  That solved the problem.  I apologize for waiting so long to respond.