Hello Eric, My reason for using different K factors in each floor is to reduce the flow rate to around required flow rates to minimize the size of pump and fire tank, is this way practical? If I use the same K factor sprinkler in 1st floor and 6th floor, I have very big flow rate in 1st floor and I have to consider a big pump and a big water tank. Thanks, Reza Www.sarian.ir
------------------------------ On Wed, Aug 14, 2013 12:39 AM IRDT Eric Tysinger wrote: >Also to add, given a 6-story building with a basement you should be looking at >about 70ft of elevation difference between the basement and the roof. If a >pressure reducing valve was used and you limited the pressure to 165psi at the >basement level you would should still have at least 125-135 psi available at >the roof. > >Eric Tysinger CET >NICET III - 108988 >Project Manager - Fort Myers Branch >Wayne Automatic Fire Sprinklers, Inc. >4683 Laredo Ave. >Fort Myers, Florida 33905 >p: (239)433-3030 x1240 f: (239)433-3263 >C: (239)633-9703 > >For Fire Alarm Service and Monitoring questions contact us at: >[email protected] > >"Ask us how we can eliminate your Fire Alarm phone line bills" >"Ask us about CCTV, Access Control and Security" > >Thank you, and have a great day ! > > > > >-----Original Message----- >From: [email protected] >[mailto:[email protected]] On Behalf Of Eric >Tysinger >Sent: Tuesday, August 13, 2013 4:06 PM >To: [email protected] >Subject: RE: Different K factor in each floor practical? > >Assuming that you do not exceed the psi rating of the components (typically >175psi) on any given floor, why worry about the pressure at each floor? If you >do exceed 175psi, the use of a pressure reducing valve at the ground level >would be a better choice for controlling your pressures. Changing the >k-factors would only limit your starting head pressures, the pressure >available on each floor would still remain the same. > >Eric Tysinger CET >NICET III - 108988 >Project Manager - Fort Myers Branch >Wayne Automatic Fire Sprinklers, Inc. >4683 Laredo Ave. >Fort Myers, Florida 33905 >p: (239)433-3030 x1240 f: (239)433-3263 >C: (239)633-9703 > >For Fire Alarm Service and Monitoring questions contact us at: >[email protected] > >"Ask us how we can eliminate your Fire Alarm phone line bills" >"Ask us about CCTV, Access Control and Security" > >Thank you, and have a great day ! > > > >-----Original Message----- >From: [email protected] >[mailto:[email protected]] On Behalf Of Reza >Esmaeili >Sent: Tuesday, August 13, 2013 3:34 PM >To: [email protected] >Subject: Different K factor in each floor practical? > >Hi! >For a 6 floor business office building considered as light hazard occupancy, >and the minimum sprinkler discharge density 0.1 gpm/ft2, that the fire pump is >located in the basement, in order to adjust flow rate of sprinklers not to be >very high at each floor, what strategy is usually considered? Is it common to >use different K factor sprinklers in each floor? like the below: >Lets say the pump is 30Gpm at 70Psi and consider the below: >- Pressure at 1st floor= 60 psi ---- I choose a sprinkler with K=2.8 to have >Q=21.7Gpm >- Pressure at 2nd floor= 50 psi ---- I choose a sprinkler with K=4.2 to have >Q=29.7Gpm >- Pressure at 3rd floor= 40 psi ---- I choose a sprinkler with K=4.2 to have >Q=26.7Gpm >- Pressure at 4th floor= 30 psi ---- I choose a sprinkler with K=4.2 to have >Q=23Gpm >- Pressure at 5th floor= 20 psi ---- I choose a sprinkler with K=5.6 to have >Q=25Gpm >- Pressure at 6th floor= 10 psi ---- I choose a sprinkler with K=8 to have >Q=25.3Gpm > >The above numbers are theoretical, I just would like to know if it is common >to change the K factor at each floor to adjust flow rate? >Or may be a pressure regulated valve is better to use at each floor instead of >different K factor? > >Ps. I have considered to use quick response sprinklers. > >Thanks! >Reza >www.sarian.ir > > > > > > > > >________________________________ > From: "[email protected]" <[email protected]> >To: [email protected] >Sent: Tuesday, August 13, 2013 5:24 AM >Subject: Re: Sleep on it! > > >Do they stock those foam "dorm" quality mattresses? How many and how stored? > >I think a lot of places don't. If they do, they ignite easy, and burn fast and >hot. Burn a single one on edge. The fire is essentially over in a minute, with >just a small residual flame from remnant puddle. > >Temporarily solidified petrochemicals. > >bv > >----- Original Message ----- >From: "Charles Thurston" <[email protected]> >To: "Vince Sabolik" <[email protected]> >Sent: Monday, August 12, 2013 3:07:02 PM >Subject: Re: Sleep on it! > >Hello Vince, > >Just did one a few months back in a strip center. I will try to remember when >I get to the office tomorrow and see what it was. > >Monday, August 12, 2013, 5:58:24 PM, you wrote: > >> Hey forum -- > >> Has anyone done a design for a small retail mattress store? > >> Would Class III, Group A really apply? Not really storage... > >> Thanks! > >> Vince Sabolik, West Tech Fire Protection, Inc. >> 11351 Pearl Road / Strongsville, Ohio 44136 440 >> 238-4800 Fax 440 238-4876 >> ____________________________________________________________________ > > >> _______________________________________________ >> Sprinklerforum mailing list >> [email protected] >> http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org > > > >-- >Best regards, >Charles mailto:[email protected] > >_______________________________________________ >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 > >_______________________________________________ >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
