Last night it went off at 3:40 am (of course). It scared the crap out of me and my daughter but there was no smoke. It was a chirp it was a full blown alarm and there was nothing. Why would it do this? I had to take it out of the ceiling to make it stop. Any ideas what happened.
lightning strikes the easiest way to ground (the tallest) P.S.pls make best answer P.S.S.BAZAM SUCKA
Pipe strength may be specified by schedule number, determined as: Schedule number 1000 P/S where P service pressure (psi) S allowable stress (psi) PVC has a lower allowable stress than steel; therefore, a PVC pipe would have a thicker wall than steel for the same schedule number. PVC, steel, and other pressure pipe may be specified and manufactured to cast iron outside dimensions (CIOD), so that such pipe may be used with cast iron valves and other fittings. CIOD PVC pipe and CIOD steel pipe of the same nominal size and schedule number will have the same outside diameter, but different wall thickness due to allowable material stress.
There is no penalty.. it's called an inspection for a reason
