Steve, Up here it varies by water company. We have one company that only does either 1" or 2" taps. They typically require 2" for residential AS, probably so they can get more money. You may be able to get away with 1", but if it is a single feed, remember that you need to include a domestic demand on that main. Depends on the house. My guess is that it would be cheaper to install one 2" that two 1" mains.
Backflow prevention is getting interesting. There is a law that went into effect last August that all applications for taps are to be reviewed by the water company for cross connection proposals and the water company can make whatever request they want beyond State Code. Essentially the water companies can make up there own requirements without recourse. This has not shown up yet, but probably will in the next year. We had one battle on a 13D system, fed from a 1" shared domestic line. It was desolved because they were trying to apply it retroactively. They need a coherent policy. One thing to consider is if steel pipe and fittings are used in the 13D system. Since steel pipe is not approved for plumbing pipe, would this be a situation where a backflow is required. it's nice to see a water company actually preparing and thinking things out and bringing in knowledgeable people. Most of them up here just make the crap up on the fly. Todd At 08:54 AM 3/16/2010, you wrote: >The fire department and local water utility of Jacksonville are currently >working together to figure out what will be required for the new residential >sprinkler requirement. I've been invited to participate and they are >looking to me to provide some guidance on what will be required for each new >single family home in terms of water hookups to accommodate a new 13D >system. > > > >Somehow, the water department got the idea that they will need 2" taps for >each house. I know that is way too big, but I am curious - what have you >been seeing for line sizes for single family homes? Also, has it typically >been a single line or two separate taps. I would think that a 1" service >would suffice for a two head calc and max flow of 30 gpm or so with average >water supplies. It's pretty flat here and this utility is fairly consistent >with water supplies that test at 60/50 at 1,000 gpm or so. I'm also curious >about any special meter requirements, backflow requirements, or tap fees >that your area is implementing. > > > >Any feedback would be great appreciated and helpful for us in setting the >course for what will hopefully be the beginning a new era in Florida where >each new house is sprinklered. > > > >Thanks for your help, > > > > > >Steve Kowkabany, P.E. > >Fire Protection Engineer > >Neptune Fire Protection Engineering LLC > >60 Ocean Boulevard, Suite 15 > >Atlantic Beach, FL 32233 > >904-652-4200 Phone > >904-212-0868 Fax > > > >_______________________________________________ >Sprinklerforum mailing list >[email protected] >http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum > >For Technical Assistance, send an email to: [email protected] > >To Unsubscribe, send an email to:[email protected] >(Put the word unsubscribe in the subject field) Todd G. Williams, PE Fire Protection Design/Consulting Stonington, Connecticut 860-535-2080 www.fpdc.com _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field)
