I like what Ryan suggests. I have also seen it requested that if sch 40 is required it will be cut grooved for pipe 2” and larger and that all installed piping shall either be seamless or must be fabricated with the seam not on the bottom. My fabricator said this would not be a problem as long as they knew about it prior to fabrication.
Dewayne Martinez Fire Protection Design Manager *TOTAL* *Mechanical* *Building* *Integrity* W234 N2830 Paul Rd. Pewaukee, WI 53072 [email protected] Ph: 262-522-7110 Cell: 414-406-5208 *http://www.total-mechanical.com/ <http://www.total-mechanical.com/>* [image: Consecutive Honors 2012-2017] *From:* Sprinklerforum [mailto: [email protected]] *On Behalf Of *Hinson, Ryan *Sent:* Tuesday, October 03, 2017 1:18 PM *To:* [email protected] *Subject:* RE: Schedule 10 vs Schedule 40 pipe I would say to use nitrogen in lieu of shop air and then use schedule 10 for sizes larger than 2”. *Ryan L. Hinson**, PE*, SET*** \ Burns & McDonnell Senior Fire Protection Engineer *O* 952-656-3662 \ *M* 320-250-5404 \ *F* 952-229-2923 *[email protected] <[email protected]>* \ burnsmcd.com <http://www.burnsmcd.com/> 8201 Norman Center Drive, Suite 300 \ Bloomington, MN 55437 *Registered in: LA, MD, MN, PA, TX, & UT **NICET IV - Water-Based Systems Layout *From:* Sprinklerforum [ mailto:[email protected] <[email protected]>] *On Behalf Of *Mike Stossel *Sent:* Tuesday, October 03, 2017 12:50 PM *To:* [email protected] *Subject:* RE: Schedule 10 vs Schedule 40 pipe In my opinion if the schedule 40 is going to be grooved than it would probably be worth it, but if they are going to thread the schedule 40 than schedule 10 will most likely outlast the 40. I am basing this on schedule 10 grooved piping having a better corrosion resistance ration than threaded schedule 40. Mike Stossel *SET* [image: 400dpiLogoCropped] 36 Barren Road East Stroudsburg, PA 18302 Office: 973-670-2627 [email protected] *From:* Sprinklerforum [ mailto:[email protected] <[email protected]>] *On Behalf Of *John Paulsen *Sent:* Tuesday, October 3, 2017 1:34 PM *To:* [email protected] *Subject:* Schedule 10 vs Schedule 40 pipe Hello Forumites: We are working to develop a bid package for a pair of large freezers and coolers used for food stuffs storage on racks to 35’. The freezers are to be -10 degrees and the coolers will be 31 degrees. The sprinklers systems will be double interlock pre-action with Protecto-wire detection and CMSA sprinklers. My question: The owner is asking for a recommendation on whether to spec schedule 10 or schedule 40 piping. The concern is long term serviceability of the piping system. My initial thought is that due to the constant low ambient temperatures corrosion would be seriously inhibited for two reasons; any condensate in the pipe would be in frozen form and the low temps would inhibit microbial growth. So my thought is that schedule 10 pipe would last the 20 year expected service life of the system. However, I would like to get the thoughts of the forum participants, is the cost of schedule 40 warranted or would schedule 10 service just as well in this application? Thanks in advance for your responses. John Paulsen – SET Crown Fire System Design 6282 Seeds Rd. Grove City, OH 43123 P – 614-782-2438 F – 614-782-2374 C – 614-348-8206
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