How do you calculate head?

[mshumack]

I printed a couple of pages off the web with very detailed instructions on calaculating head both on a working system (with pressure and vacuum gages) and for new construction (pipe size, lenght of runs, number of fittings, etc.) It was pretty invloved. Unfortunately, now I can't find it. I'll look some more when I get a chance tomorrow. For now, you can start with this page http://www.poolplaza.com/pump-head.shtml
Good luck
Mike