Yes well thinking ahead has never been a strong point of builders anywhere
in the world when it affects their bottom line profit.
Brian

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The Sofa of Brian Gaff...

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Here in Palm Desert California our home was built with TWO water pressure
regulators. One for the house supply (set at 50psi) and one for the garden
sprinkler supply. I have never bothered to determine the latter pressure.
Static pressure from the street is 95psi which varies but not by much.
Construction methods here involve a cast concrete slab with the water pipes
set in the concrete. To me, this is BLOODY LUNACY as anyone knows concrete
flexes and cracks. Slab leaks are not at all uncommon. Guess why?