Glad to see you made it back safely from Nashville, and it was great to meet there and put a face with the name. By the definition in section 3.3.2 of NFPA 14 [2013 ed], the pipe you describe is a "branch line." Section of that document advises that you need to follow NFPA 13 to provide protection against damage from earthquakes. Lateral bracing for that line is not required per NFPA 13 [2013], as it is not a branch line 2½" or larger. Longitudinal bracing for that line is not required per as it is not a feed or cross main.
    My opinion only.  Please see the disclaimer below.
*Ken Wagoner, SET
*Parsley Consulting***
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*IMPORTANT NOTICE: This correspondence is not a Formal Interpretation issued pursuant to NFPA Regulations. Any opinion expressed is the personal opinion of the author and does not necessarily represent the official position of the NFPA or its Technical Committees. In addition, this correspondence is neither intended, nor should it be relied upon, to provide professional consultation or services**
**It should be noted that the above is my opinion as a member of the NFPA Automatic Sprinkler System Hanging and Bracing Committee in accordance with the NFPA Regulations Governing Committee Projects and should therefore not be considered, nor relied upon, as the official position of the NFPA or its Committees*

On 09/21/2016 8:17 AM, Rocci Cetani 3 wrote:

Do I need to earthquake brace my 1½” feed for hose connections?

*/Rocci Cetani III, /**CET**//*


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