If NFPA13 is to be involved you may also have to look at this situation as the type of "shelving" created by the pipe. To consider the separations between the pipes it will have to meet the slatted shelf criterion, if it cannot then the only other classification would need to solid shelf. Believe me that can really give you a headache unless you use FM Global standards. They are much more informative. Just a thought.
Russell Rewis Brown Automatic Sprinklers, Inc. 107C Hemlock Street Valdosta, Georgia 31601 229-244-8130 [EMAIL PROTECTED] -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] Sent: Wednesday, July 09, 2008 10:24 AM To: [email protected] Subject: Treatment of pipe racks as obstructions All, Maybe I am not looking in the right sections, but I have not found 13, 8.5 and 8.6 to be particularly useful in addressing pipes on pipe racks. For example, you have a situation where a pipe rack 5 ft. below sprinklers that is 6 ft. wide with pipe diameters up to 8" (including insulation" with varying spaces between pipes. What is the consensus on pipe size and spacing of pipes in a rack before it is considered a true obstruction? I realize the conservative approach would be to provide sprinklers under the pipe rack, but that is not always feasible. This seems to be a gray area. What about 2 tier pipe racks? If sprinklers are installed beneath racks, what is the consensus on heat collection methods. There are differing opinions and studies on this. Some say 12" x 12" collectors with downturned edges are good or not good. Some say flat 12" squares are better. Others say no to both or state that collectors need to be much larger. Similar questions relating to cable trays. What say you guys and gals? Thanks, James L.(Jim) Roberts, PE/SET Fluor Corporation 100 Fluor Daniel Drive - C104F Greenville, SC 29607 864.281.5149 864.281.4916(Fax) ------------------------------------------------------------ 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://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field) No virus found in this incoming message. Checked by AVG - http://www.avg.com Version: 8.0.138 / Virus Database: 270.4.7/1542 - Release Date: 7/9/2008 6:50 AM _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field)
