Thom - I love your reasoning and your solution. I agree backflow rooms should have drains to properly remove discharge waters but from everything I have seen the codes only specify drainage capacity on below-grade RPZ installations. Some AHJs in this area refuse to specify proper types let alone proper installations - more from a lack of knowledge than from being unreasonable (I think), but when it is brought to their attention they refuse correction or future compliance..... Some simply state they do not refuse or approve backflows that is the water supers job... They are the AHsomeJ. I am in the north where outside installations with hot-boxes are rare. Curbs and scuppers or drains such as you suggest should be a requirement on all in-building RPZ installations. Until it is code - all that can be done is warn of the possibility of disaster, which I personally have not found to be very effective with cost conscious builders and owners.
Garth ----- Original Message ----- From: "Thom McMahon" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Tuesday, August 26, 2008 11:14 AM Subject: RE: backflow preventer drains > Garth: > > I'm not saying that a drain would be required on an "Outside" installation, > as we see on vacation to those warmer climates. We're talking installations > inside of buildings. The IPC says a "Riser room" is a mechanical room, and > requires a min. 2" drain in all mech rooms. Double check or RPZ the room > will have a floor drain of 2" or it may be installed in a freely draining > area or words to that effect.(So if it's in a room it's a mech. room and > must have a drain, if it's in a warehouse or other open area it must be > freely draining. _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field)
