I can tell you that the vent stack exists solely to prevent siphoning water out of J and P traps while water is running. When high winds produce a lower pressure at the roof vent than in the house, the traps will be sucked dry and you'll have to refill them to prevent odor in the house when the wind dies down. Yes, the sewer gases can be sucked out of the sewer, and sniffed in the breeze on the ground or deck below and downwind of the vent.
Burt is right. Time marches on. Bill Hawkins -----Original Message----- From: Burt I. Weiner Sent: Sunday, April 15, 2012 8:45 PM To: time-nuts@febo.com Subject: [time-nuts] Antenna Restrictions... I can tell you from first hand experience - Do not restrict the air flow of a roof vent associated with plumbing, especially if it's associated with the Loo. Burt, K6OQK > > On 4/15/2012 5:41 AM, Chuck Harris wrote: > > > Yes, but you GPS antenna surely would notice the infusion > > > with various fumes and chemicals that come from the vent > > > pipe. Remember, the vent is open to the sewer, its purpose > > > is to prevent pressure build up in the sewer from blowing > > > (or sucking) the water out of the various traps and letting > > > sewer gas into the house. Burt I. Weiner Associates Broadcast Technical Services Glendale, California U.S.A. b...@att.net www.biwa.cc K6OQK _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.