It is my understanding that you need to provide calculations per NFPA 13, or use the pipe schedule method where it is allowed. You can estimate with tables showing pressure drops, but that likely won't suffice for submittal to the local authorities in any where that I have done work.
On 2/10/2010 2:08 PM, Karen Purvis wrote: > We mainly do new and add-on systems a few retrofits no grids no high piled > storage no extra hazard. Usually all light and ordinary hazard. > > Karen Purvis > Senior Designer > Facility Systems Consultants > 713 South Central Street, > Suite 101 > Knoxville, TN 37902 > ph.865-246-0164 > fax 865-246-1084 > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of > [email protected] > Sent: Wednesday, February 10, 2010 4:12 PM > To: [email protected] > Subject: RE: pipe sizing question > > For what kind of systems, new, retrofits, tree, grid, etc.....? > > > Craig L. Prahl, CET > Fire Protection Specialist > Mechanical Department > CH2MHILL > Lockwood Greene > 1500 International Drive > PO Box 491, Spartanburg, SC 29304-0491 > Direct - 864.599.4102 > Fax - 864.599.8439 > [email protected] > http://www.ch2m.com > > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of Karen Purvis > Sent: Wednesday, February 10, 2010 3:57 PM > To: [email protected] > Subject: pipe sizing question > > This may seem like a very newbie question but here goes. How do most of you > guys size your pipe other than using a hydraulic calculation program? I have > been using a pressure drop chart that list pressure drop and velocity in > schedule 40 pipe for water at 60°F per 100 feet drop. So far this has worked > for me but now I have someone questioning my method. Should I be going back > to the pipe schedule method? > > > > Karen Purvis > > Senior Designer > > Facility Systems Consultants > > 713 South Central Street, > > Suite 101 > > Knoxville, TN 37902 > > ph.865-246-0164 > > fax 865-246-1084 > > _______________________________________________ > 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) > -- Please feel free to call if you have any questions or comments. Sincerely, Travis Mack, SET MFP Design, LLC 2508 E Lodgepole Drive Gilbert, AZ 85298 Office (480) 505-9271 Fax (866) 430-6107 _______________________________________________ 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)
