Piggy backing on Todd and James. Is IRI's "data" a good rule of thumb they developed that worked well for their justifiably conservative position or something developed from empiricism or experimentation? Without statistical data, just by watching the "news," I can develop a ranking system wherein spaceflight is more dangerous than, flying in airplanes, than sailing in ships, than driving (and we can probably agree to put ships and trains in there somewhere) but since when is a question? In any given period of time, either era or finite continuous period? Number of total miles traveled (goes back to over time0? You guys understand statistics and probabilities. So I go back to the original question: IRI's data is arrived at how? And if we don't know aren't we just accepting it as if it were religion? IRI, an authority, says it is so, and so it must be so. How many of us have encountered AHJs that have determined their authority alone has given them some magical power of interpretation and understanding? welcome to Oz.
On Wed, Apr 21, 2010 at 5:23 AM, Todd Williams <[email protected]> wrote: > The SFPE handbook of Fire Protection Engineering has a discussion and > information on this, but mostly around underground. Is there really > any reliable data on above ground piping deterioration? > > > > At 08:04 AM 4/21/2010, you wrote: >>My old IRI Hydraulic calculator has C factors on the back as follows for >>iron and steel pipe: New -120, 10yrs -110; 15-100; 20-90; 30-80; 50-70 and >>75 yrs - 60. >> >>I'm assuming you'll also be using a revised C factor for the UG. If so, >>you may want to run water flow tests to determine your actual C-factor. >> >>I hope this helps. >> >>James L.(Jim) Roberts, PE/SET >>Fluor Corporation >>100 Fluor Daniel Drive >>Greenville, SC 29607 >>864.281.5149 >> >> >> >> >> >> >> > -----Original Message----- >> > From: [email protected] >> > [mailto:[email protected]] On Behalf Of >> > [email protected] >> > Sent: Tuesday, April 20, 2010 3:13 PM >> > To: [email protected] >> > Subject: C-Factor >> > >> > Can someone tell me were in NFPA-13 dose it talk about the C-Factor for >> > pipe. I am doing a calc. on an old system and I know I have to change >>the >> > C-Factor but I can not find it in the code book. I found it somewere >>elese >> > and it says in old pipe i must change the C-Factor like new black pipe >>for >> > wet systems will be 120 C-Factor but if its 50 years old I must chage it >>to >> > 90. Can someone tell me were to find this info. >> > Thank You >> > >> > _______________________________________________ >> > 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) >> > >> > >> > __________ Information from ESET NOD32 Antivirus, version of virus >>signature >> > database 4946 (20100315) __________ >> > >> > The message was checked by ESET NOD32 Antivirus. >> > >> > http://www.eset.com >> > >> > >> > >> > __________ Information from ESET NOD32 Antivirus, version of virus >>signature >> > database 4946 (20100315) __________ >> > >> > The message was checked by ESET NOD32 Antivirus. >> > >> > http://www.eset.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) >> > >> > _______________________________________________ >> > 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 >>Bates Technical College >>Tacoma, WA >> >>Member: >>SFPE, ASCET, NFPA, AFSA, NFSA AFAA, NIBS, WSAFM, WFC >>_______________________________________________ >>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) > > Todd G. Williams, PE > Fire Protection Design/Consulting > Stonington, CT > 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) > -- Ron Greenman Instructor Fire Protection Engineering Bates Technical College Tacoma, WA Member: SFPE, ASCET, NFPA, AFSA, NFSA AFAA, NIBS, WSAFM, WFC _______________________________________________ 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)
