If the issue is unheated space inside the building, your scenario with exposed trench is not an option. I have no idea what IBC has to say about the issue but as Scott said leaving the main in place will mean future issues. Ductile does not last forever- absorbing an additional cost now prevents paying the devil later
-----Original Message----- From: Sprinklerforum [mailto:[email protected]] On Behalf Of Scott A Futrell Sent: Sunday, December 07, 2014 3:48 PM To: [email protected] Subject: RE: Existing Underground I'm not sure you had any answers for your question before the thread was hijacked. In the long-term many things can go wrong with an underground main that is 'in a trench' or under a floor. I've witnessed the problems with underground water mains under floors and the cost to make repairs, and business down time, can be significant. Doors not large enough for excavators to get into the building, ceiling heights too low to allow a backhoe to dig deep enough, <$1M / day business interruption because the main could be repaired without digging up the floor in the building, and more. Scott Office: (763) 425-1001 x 12 Cell: (612) 759-5556 -----Original Message----- From: Sprinklerforum [mailto:[email protected]] On Behalf Of Plumbco Sent: Friday, December 05, 2014 6:08 PM To: [email protected] Subject: RE: Existing Underground I have a customer with an existing unheated building that has an 8" ductile underground serving 2 Dry Valves. The underground enters the building in the center of the east side of the building. Let's call this a 200' x 200' building. Now they want to put a 80' x 200' addition on the east side of the existing building. I know that the underground on a new building has to be run in an exposed trench if it is located within the building. What is the forums opinion on leaving the existing underground where it is as part of the future expansion. Is there anything in the IBC that addresses this. On several occasion in the past I have had them shorten the underground in scenarios like this and modify the mains within the building , this was on light and ordinary hazard wet systems. In this proposed scenario it is a Class 4 commodity to 26' and I am not sure the calculations will work as well as interior elevation problems. The underground pipe is 8" class 52 ductile. The main drain and FDC are not an issue as I have a way to get them to an acceptable exterior wall. Any help or advise on this would be appreciated. Bill Cunningham Plumbco Inc CET _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
