Could it have something to do with the fact that the multi-thousand dollar program is UL listed and your smelly feet aren't?
At 07:19 PM 6/17/2009, you wrote: >As I read this it seems to say that the same rules apply as before but >to prove the system size I have to use an approved computer program. >Now I'm no math whiz but I can calculate the capacity of a bunch of >tubes (pie is square times length equals cubic X, convert X cubes to >cubic feet, convert the smelly feet to gallons, add up all the >different sized tubes and....). Time consuming but why do I need a >multi-thousand dollar program for a task that I can do with paper and >pencil? > >On Wed, Jun 17, 2009 at 3:57 PM, Roland >Huggins<[email protected]> wrote: > > nothing changed (except for dwelling units). The 500 gal w/o QOD or > > 750 gal limits still apply. The timed approach is just for exceeding > > them. As for dwelling units, it is not 15 sec regardless of size. > > > > Roland > > > > On Jun 17, 2009, at 3:44 PM, Ron Greenman wrote: > > > >> So what drove the change from the old way of working trip times (under > >> 500 gal. all was good, 500-750 gals. and either 60 seconds or QOD, > >> over 750 gals. QOD and all is good)? was it due to systems failing due > >> to too long trip times or was it a way to sell an expensive computer > >> program? If due to failures did it happen in a cross section of > >> buildings or in certain types of buildings and if the latter is it > >> necessary to treat all systems equally? Certainly requirements to trip > >> test everything to 60 seconds in years past was based on local > >> requirements arrived at collectively by AHJs because they wanted it > >> and it was complied with enough to become the usual thing to do until > >> it became codified--first locally and then in 13. Where's the data > >> that supported this costly change at point in this migration from what > >> 13 said to what it says now? Enquiring minds want to know. > >> > > _______________________________________________ > > Sprinklerforum mailing list > > http://lists.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) > > > > > >-- >Ron Greenman >at home.... >_______________________________________________ >Sprinklerforum mailing list >http://lists.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 www.fpdc.com 860.535.2080 _______________________________________________ Sprinklerforum mailing list http://lists.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)
