Jamie, Is the 18 at the flow switch a maximum to keep the paddle on the switch or a minimum to insure the switch operates? I would think the later.
On Tue, Dec 28, 2010 at 4:49 PM, Jamie.seidl <[email protected]> wrote: > Yes there are velocity requirements in the UFC along with the 3000 sqft HMRA. > While I don't have them in front of me, 20 or 24 fps comes to mind, and 18 > fps at the flow-switch (per UL). This always brings me back to the point of > when your calculating the HMRA, wouldn't you also need to calc the closest > area? No pressure loss = more flow? I typically do this calc when sizing a > tank/pump set up for sizing of the tank v.s. Duration... Am I wrong? > > Jamie > Sent from my iPhone > > On Dec 28, 2010, at 7:25 PM, [email protected] wrote: > >> The technical parts of this discussion have been interesting. >> >> I may have lost something in the trail of emails, but is there anything in >> UFC 3-600-01 or other UFC standards that require velocity limitations. >> >> I have to go to Afghanistan in a couple of weeks to inspect some systems >> that were done by a South Korean company. Prior to that we have to >> evaluate and do calcs. where pipe was schedule sized. The fire protection >> work for the bases is supposed to conform to UFC 3-600-01, but no other >> govt. stds. that I know of. Because these buildings are not likely to be >> long term, conservative design is not necessary and as many have pointed >> out, 0.10/3000 is twice the norm anyway. >> >> I respectfully request no political commentary with the answer. >> >> Thanks in advance, >> >> >> >> James L (Jim) Roberts, PE/SET | FLUOR | Principal Fire Protection Engineer >> – Central Engineering | [email protected] | IODC 20.5149 | O >> +1.864.281.5149 | www.fluor.com >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> From: [email protected] >> To: [email protected] >> Date: 12/28/2010 05:49 PM >> Subject: Re: USACE Velocity >> Sent by: [email protected] >> >> >> >> Vince, >> Believe it or not, there are considerable differences between UFC and GSA >> fire protection requirements. >> >> I feel that it is better that we compete at the higher end of fire >> protection rather at the lower end. >> >> There is difference in quality for longetivity. Anyone who thinks that >> everything should be equal and minimal across the government only has to >> remember the volkswagen (peoples car) that was destined to be the same for >> everyone in another country. >> >> Competition is good but it does not have to be at the low end of a business >> and specs do not have to be same from owner to owner or agency to agency. >> >> Rahe >> >> _______________________________________________ >> 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) >> ------------------------------------------------------------ >> The information transmitted is intended only for the person >> or entity to which it is addressed and may contain >> proprietary, business-confidential and/or privileged material. >> If you are not the intended recipient of this message you are >> hereby notified that any use, review, retransmission, dissemination, >> distribution, reproduction or any action taken in reliance upon >> this message is prohibited. If you received this in error, please >> contact the sender and delete the material from any computer. >> >> Any views expressed in this message are those of the individual >> sender and may not necessarily reflect the views of the company. >> ------------------------------------------------------------ >> _______________________________________________ >> 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) > _______________________________________________ > 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) -- Ron Greenman Instructor Fire Protection Engineering Technology Bates Technical College 1101 So. Yakima Ave. Tacoma, WA 98405 [email protected] http://www.bates.ctc.edu/fireprotection/ 253.680.7346 253.576.9700 (cell) Member: AFSA, SFPE, ASCET, NFPA, NFSA, AFAA, ASEE, NIBS, WSAFM, WFC They are happy men whose natures sort with their vocations. -Francis Bacon, essayist, philosopher, and statesman (1561-1626) _______________________________________________ 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)
