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Re: Fire Sprinkler Thrust Loads

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I recently spoke with a friend who is a contractor who was being requested to
verify that a new metal building that they had constructed be checked for
"thrust" loads in the plumbing of the fire sprinkler system.  The plumbing is
braced back (and checked) to the structure for seismic loads but Factory
Mutual has requested that it be checked for "thrust" of the water moving
through the system (particularly at bends in the plumbing). It would seem that
most of the forces in the plumbing would be resolved within the plumbing
itself and not be exerted on the structure (two opposing bends might create
tension in the pipe)

I have not heard of this before, has anyone else had this question come up or
have any experience with this situation?

Any comments would be appreciated.

Joshua Matthews