Not questioning, just curious. On the issue of 25 year life span, got a code on that? If it's UFC 3-701 most years are well more than 25.
On the issue of sch 40 falling short of the life span, got a code on that? I'm aware of 4-2.3.2 but that only limits sch 10 piping without a direct limit. "To determine if sch 10 can be used". Fine it can't depending on what the limit is. I also find it humorous sch 7 or 5 doesn't seem to be limited or even require testing. Chris -----Original Message----- From: "Bill Brooks" <[email protected]> Sender: [email protected] Date: Tue, 22 Mar 2011 06:39:48 To: <[email protected]> Reply-To: [email protected] Subject: RE: UFC 6-11.4 6-11.1 has several places where things can go wrong if your scope includes only the phrase "design in accordance with UFC 3-600-01". 1. Failure to RFI the need to design for Group A plastics or other commodities such as liquids. Note the "unless a more severe class of storage is anticipated" phrase in 6-11.1. 2. Sprinklering of all the loading docks vs sprinklering of exterior canopies. 3. Designing for maximum potential height of storage. 4. Failure to RFI the type of storage arrangement (rack, solid pile, etc, solid shelf and all those things). 5. Failure to RFI the preference for in-racks vs overhead only. Sometimes your least expensive approach is not what the owner wants. 6. Failure to RFI the need for interior hose connections. 7. Provision of doors at all riser locations. 8. Column protection either by fireproofing or sprinklers - the fireproofing option is not easy to identify on drawings. 9. Adequate sectional valves provided by the site civil engineer. 10. If the secondary fire pump is required I'd suggest clarifying the acceptable drive type. Finally, most design/build jobs have a defined useful lifespan for building systems (25 years). I've started to insert this into the specifications, intending to force MIC testing and provide results demonstrating the anticipated piping lifespan. If you are planning for schedule 40 and your MIC testing shows 22 years, then this should be clarified prior to bidding. However, my reading of 6-11.4 has not uncovered hidden meanings. Using the three bullet points it would be possible to have 120,000 sq ft open area. I do think the 10% ESFR increase would mean rounding up instead of down when determining the number of heads calculated. Bill Brooks William N. Brooks, P.E. Brooks Fire Protection Engineering Inc. 372 Wilett Drive Severna Park, MD 21146-1904 410-544-3620 410-544-3032 FAX 412-400-6528 Cell -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Mark.Phelps Sent: Monday, March 21, 2011 5:23 PM To: [email protected] Subject: RE:UFC 6-11.4 Can anyone shed any light on the meaning of this section in the UFC? Bill? Anyone? Mark at Aero -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Eric Tysinger Sent: Monday, March 21, 2011 12:37 PM To: [email protected] Subject: RE: I have used a single 2½" female hose x male thread adapter, about a foot off the floor. Then you use a short piece of 2½" fire hose for testing. Thanks, Eric Tysinger CET NICET III - 108988 Designer Wayne Automatic Fire Sprinklers, Inc. 4370 Motorsport Drive Concord, NC 28027 p: (704)782-3032 x1751 f: (704)795-6838 C: (239)633-9703 -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Todd Williams Sent: Monday, March 21, 2011 3:06 PM To: [email protected] Subject: Tom, Do you have a picture or a sketch of a drain riser and connections for a 2-1/2" pressure reducing hose valve? I'm having a hard time picturing how this all goes together. Also any hints on distance or arrangement would be helpful. Thanks Todd 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) _______________________________________________ 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) _______________________________________________ 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)
