Most jurisdictions (at least in Northern California) have their own specs on the required size of the thrust block and a few require a concrete thrust block regardless of the restraint used. I would check with the AHJ for clarification......
Rocci Cetani III, CET Lead Designer Water-Based Fire Protections Systems Layout, Nicet Level III Northern California Fire Protection Services Inc. 16840 Joleen Way Bldg. A Morgan Hill, CA 93037 P-(408) 776-1580 EXT.111 F-(408) 776-1590 C- (408) 595-3906 [email protected] www.norcalfire.com CONFIDENTIALITY NOTICE: This message and any document accompanying it may contain confidential information belonging to the sender. The information is intended only for the use of individual or entity named above. If you are not the intended recipient, or the employee or agent responsible to deliver this message to the intended recipient, you are hereby notified that any disclosure, copying or taking of any action in reliance on the contents of this information is strictly prohibited. If you have received this transmission in error, please immediately notify us by telephone to arrange for return of the documents. -----Original Message----- From: Sprinklerforum [mailto:[email protected]] On Behalf Of Gerzayn Fuentes @ CEPI.MX Sent: Thursday, July 16, 2015 10:47 AM To: [email protected] Subject: Thrust block vs Restrainers - Underground Hello, folks! I am working with underground pipe PVC DR14 C900 for a fire sprinkler system and I do understand that if we use restrainers (for example: SIGMA PV-LOK-PVM and PVP) in/near the MJ fittings, we do not need to use thrust blocks. ¿Is this true? I would appreciate if someone could share an Excel file to calculate the thrust block size. Thanks Best regards! _______________________ Gerzayn Fuentes CEPI - Mexico T. + 52 (81) 1766-0800 _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
