The original building was built in 1884 and the sprinkler system installed
at that time. Since the standardized pipe schedule did not come into being
until 1896, my assumption is that the sizing was at the installers
discretion. The branch pipe sizing is less that what was called for in 1896
edition of the sprinkler standard (3/4-1-1-1.1/4-1.1/4, etc). I seriously
doubt that this would meet a hydraulic calculation. However, this system
has been great-great-grandfathered in so far.
My plan is to write a letter to the owner's agent.
Todd G Williams, PE Fire Protection Design/Consulting Stonington, CT
860-535-2080 (ofc) 860-608-4559 (cell)
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On Wed, Apr 27, 2016 at 9:01 AM, Scott Futrell <[email protected]> wrote:
Good morning Todd.
It is my opinion that you need to notify someone that an evaluation in
accordance with NFPA 25 (2014 edition) 4.1.6 and 4.1.7 needs to be
undertaken. Code of Ethics. If you've seen it, as a FPE, you are obligated
to question it if it doesn't appear to be correct.
It would take some research to determine what edition of NFPA 13 was
applicable at the time of the original construction and if there was a
change in occupancy for the 12 ft. storage. But, protecting 12 ft. of class
IV without a calculation to verify the water supply versus the pipe
schedule pipe sizing could be problematic.
As far as the fire department approving it goes, from the 2012 IFC, 105.3.6
Compliance with Code. The issuance or granting of a permit shall not be
construed to be a permit for, or an approval of, any violation of any of
the provisions of this code or of any other ordinance of the jurisdiction.
Permits presuming to give authority to violate or cancel the provisions of
this code or other ordinances of the jurisdiction shall not be valid...Any
addition to or alteration of approved construction documents shall be
approved in advance by the fire code official, as evidenced by the issuance
of a new or amended permit. 105.4.4 Approved documents. Construction
documents approved by the fire code official are approved with the intent
that such construction documents comply in all respects with the code.
Review and approval by the fire code officials shall not relieve the
applicant of the responsibility of compliance with this code. [emphasis
added]
If it is designed, installed, tested, inspected, and maintained incorrectly
it is still wrong.
Good luck.
Scott
Office: (763) 425-1001 x 2
Cell: (612) 759-5556
-----Original Message-----
From: Sprinklerforum
[mailto:[email protected]] On Behalf Of Todd
Williams
Sent: Wednesday, April 27, 2016 5:28 AM
To: [email protected]
Subject: Existing pipe schedule and storage
I am working at a facility where there is an existing OH pipe schedule
system over 12ft palletized Class IV storage. The fire department has
approved it, but I question whether it will provide adequate protection. I
did not see anything in NFPA 13 that requires storage occupancies to be
hydraulically calculated. Am I missing something?
This is outside of the project I am working on, but as an FPE, I feel
obligated to notify someone if I see a potential hazard such as this.
Todd G Williams, PE Fire Protection Design/Consulting Stonington, CT
860-535-2080 (ofc) 860-608-4559 (cell)
Sent using CloudMagic
[https://cloudmagic.com/k/d/mailapp?ct=ti&cv=6.0.64&pv=8.2]
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