RE: flex heads touching stuff

We have been told by one jurisdiction that we must support the flex so that it does not rest on the ceiling. I haven't seen anything to back that up either, but was easier to comply than to argue. Mike Hill From: Sprinklerforum On Behalf Of Matt Grise via Sprinklerforum Sent: Monday, May 18,

RE: [EXTERNAL] Re: flex heads touching stuff

That is what we used. The inspector was concerned about the excess flexible hose that was laying on the ceiling, as well as a few that passed thru a tight space between duct and ceiling. We were required, in this building, to use flexible hose longer than we normally would to accommodate

RE: flex heads touching stuff

Isn't the purpose of using the flex so that it moves with the ceiling? Supporting it apart from the ceiling seems that it would defeat the purpose. As far as touching anyting, that may be an AHJ preference, but not a listing requirement. Ask for the code/ listing reference that is being

RE: flex heads touching stuff

That was my general response. It was faster to push 5 flex drops a inch than it was to request a code reference. It still seemed a little odd. Matt From: Sprinklerforum On Behalf Of Michael Hill via Sprinklerforum Sent: Monday, May 18, 2020 2:20 PM To: sprinklerforum@lists.firesprinkler.org

RE: flex heads touching stuff

That is what I thought – but since I could not (quickly) locate text that said touching was ok, I just pushed the flex drop a little so it was not touching. It was one of those things where I thought the AHJ was wrong, but it took virtually no effort to comply. Any idea where it might be

Re: flex heads touching stuff

No - but I will research it. Thanks, John John August Denhardt, PE *Vice President, Engineering and Technical Services* *American Fire Sprinkler Association* m: p: 301-343-1457 214-349-5965 ext 121 w: firesprinkler.org

Re: flex heads touching stuff

Ceilings should be installed to ASTM C635/C635M maximum unsupported length does not exceed 6'... most new ceilings are designed to handle weight of light fixtures and other things but it does have its limits Chuck Bamford On Mon, May 18, 2020 at 12:08 PM Matt Grise via Sprinklerforum <

flex heads touching stuff

We received a comment on an above ceiling inspection that flex drops are not allowed to touch anything above the ceiling. I have not seen any information requiring that. Has anyone seen anything similar? Matt ___ Sprinklerforum mailing list

Re: flex heads touching stuff

What I have been taught and read, no sprinkler unrelated material can be supported by the flexible sprinkler drop. The drop may touch other material as long as the other material does not place a load onto the sprinkler drop. Thanks, John John August Denhardt, PE *Vice President, Engineering

RE: [EXTERNAL] Re: flex heads touching stuff

The flex drops I’ve seen and used all have a bracket that attaches to the grid and secures the drop. It’s part of their listing that the bracket is used for specific installations. Craig Prahl | Jacobs | Group Lead/SME – Fire Protection | 864.676.5252 |

Re: flex heads touching stuff

I received this comment directly from Victaulic. I copies the applicable section:: *John is correct in his response, there is no issue or code prohibiting VicFlex from touching another component above the ceiling or the ceiling itself. The question may arise regarding weight/load impact on the