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A weekly newsletter dealing with codes and other technical issues
March 16, 2015
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Interior Bulk Main
"There is a school that is 123,719 square feet in area. The school has one riser
that is feeding four separate riser zones per Section 3.3.18. The zones are
less
than 52,000 sq. ft. with control valves and flow switches. The local AHJ is
telling
me that I need to have four separate risers per Section 8.2.1. Is this correct?"
We have reviewed NFPA 13, 2013 edition as the applicable standard. Our informal
interpretation is this arrangement would meet the criteria allowed by NFPA 13.
The arrangement of the interior bulk supply main or one fire service entrance
that
you have described is commonly found in large facilities such as hospitals,
large
industrial plants and sports arenas. The interior bulk feed main provides the
same
service that a typical manifold feeding several systems with each being the
allowed
maximum size. The criteria of Section 8.2.1 has to be followed for the systems
attached
to the interior bulk feed main in the manner that they would have to be followed
for an exterior underground bulk feed main. The definition of a system riser is
Section 3.5.12 where it states, "The aboveground horizontal or vertical pipe
between
the water supply and the mains (cross or feed) that contains a control valve
(either
directly or within its supply pipe) and a waterflow alarm device." The interior
bulk feed main is the water supply to these four systems. The interior bulk
feed
main or aboveground pipe can have control valves and waterflow switches giving
the
appearances of a fire sprinkler system riser. This water supply arrangement
should
not be termed as a "system riser" when applying Section 8.2.1 for maximum floor
areas protected by one sprinkler system riser. This application is exceeding
NFPA
13 since the standard does not require the building main to have a flow switch
on
it. Waterflow switches are a reasonable addition for interior water supply mains
so as to identify any water flow or leaks in the main.
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NFPA 25 Open for Public Comments
The first draft report for the next edition of NFPA 25, Standard for the
Inspection,
Testing, and Maintenance of Water-Based Fire Protection Systems, is open for
public
comments.
http://www.nfpa.org/25 [http://www.nfpa.org/25]
2017 edition:
Posted under Next Edition tab:
First Draft Report - open for public comment
[http://r20.rs6.net/tn.jsp?f=001wS--iNr8CuGJE2-jj1bA7AWnZso00WgMf6jBBs1aQYK47mzZWC4WgXKY0dWu6W9hQENUuN2ZIu_aag8MBsDQqcMjYiWweOYB-tlYK9oxC_2-3ajwmqNX8BHIUK3ESuz0A2OciYXNAriZ9-mkVffTMmq0rp1_YXZ7oViyXcnIbfdpW8T21Jq0qZKCohfuy0RCQamIUDyLSIPuLNdkn7fc9EF9Hj_9R3nLW-EClFP77yKG2PfIvcSYrkQSOtSWFYqPODq5FvRnuN1GmxqJVQRc8Cul3PE5iSy9&c=35t4OWDpXdKi4dJVR6z1cXp9x3D6ZCmjn1mHoG4gjqiMuCtvtIjsow==&ch=Lw-YLaE_0IhAssxuox64TJZ6mJeiV69zK7RYyzgqOhzBJhBvML5zPg==]
First Draft Ballot Final
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NFPA 13 - TIA 1165 Open for Comments
A Tentative Interim Amendment was issued for the 2016 edition of NFPA 13 as Log
No. 1165 addressing Section 17.2.3.5.6 of Chapter 17. The comment closing date
is April 17, 2015.
See the link below or access the TIA or http://www.nfpa.org/13
[http://r20.rs6.net/tn.jsp?f=001wS--iNr8CuGJE2-jj1bA7AWnZso00WgMf6jBBs1aQYK47mzZWC4WgVT9eyPhblfhQhAE7_SfI5Er__SGO-AeEeGGAj_x_lPR8irSJTO4Y6JraYukTV4b_4-LkUHs3JnO41IfRZHiq4V_1fsxwJfMCNensrsUQy81JL1wky62R3k=&c=35t4OWDpXdKi4dJVR6z1cXp9x3D6ZCmjn1mHoG4gjqiMuCtvtIjsow==&ch=Lw-YLaE_0IhAssxuox64TJZ6mJeiV69zK7RYyzgqOhzBJhBvML5zPg==]
PDF Version - Link
[http://r20.rs6.net/tn.jsp?f=001wS--iNr8CuGJE2-jj1bA7AWnZso00WgMf6jBBs1aQYK47mzZWC4WgbGQdIy0-1rS_n5zrtSelKlBm3qpiUPOb-yO5fR7ZDfs00X9UR5M0a3caqDlV_dYg7W-6tblwUnPuSF4u7ToQJD-SafqpZplgzOMfmuWlJXuw3d5MaQk_O1mRPETR8WcnoNKlIrKoc3_X5gAkG891O5n4hAFFbbpxbQQX7-DDWrCMYDODwOqYhCp8tahYTCOQHVQIyCvNoJi&c=35t4OWDpXdKi4dJVR6z1cXp9x3D6ZCmjn1mHoG4gjqiMuCtvtIjsow==&ch=Lw-YLaE_0IhAssxuox64TJZ6mJeiV69zK7RYyzgqOhzBJhBvML5zPg==]
The following is from the TIA document:
Substantiation:
The Fire Protection Research Foundation coordinated additional full scale fire
tests
at 30 ft ceilings for the protection of Exposed Expanded Plastic storage on
racks.
Previous testing by the Foundation demonstrated protocol for 40 ft ceiling
protection
at a higher design pressure. This new 30 ft ceiling information was not
available
to the technical committee during the Annual 2015 cycle of the NFPA 13 document.
The reduction of design pressure from 60 psi (the design pressure for 40 ft
ceilings)
to 30 psi is significant to the cost of the design and installation.
Emergency Nature:
Multiple concerns were raised in the technical committee debate that without 30
ft ceiling data, excessive pressure would be mandated rather than relying on
other
industry standards that had 30 ft ceiling design options. This additional
testing
provides the requested design protocol for 30 ft and lower ceilings in the NFPA
13 document.
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firesprinkler.org
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Hosted by the American Fire Sprinkler Association
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Technical Update is prepared by the Technical Services Dept. of the AFSA: Vice
President
of Engineering and Technical Services Roland Huggins, a PE registered in fire
protection
engineering; Phill Brown, a NICET IV certified automatic sprinkler technician
and
NFPA Certified Fire Protection Specialist (CFPS) and Tom Wellen, a PE registered
in fire protection engineering. This is provided with the understanding that
the
AFSA assumes no liability for this opinion or actions taken on it and they are
not
to be considered the official position of the NFPA or its technical committees.
Copyright 2015, American Fire Sprinkler Association. All Rights Reserved
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Webinar
Building Information Modeling: What, How, Why
by
Ray Lambert
and
Kenneth Stowe, PE
Wednesday
March 25, 2015
11:00 a.m. - 12:30 p.m. Central.
This 1.5-hour webinar will be presented FREE to all AFSA members.
Register Button
[http://r20.rs6.net/tn.jsp?f=001wS--iNr8CuGJE2-jj1bA7AWnZso00WgMf6jBBs1aQYK47mzZWC4WgRj91lfIF56CfAOSeKAfDVvl17ifIbdzRM87ZUQVdHMx7J6V1NzWv1-RGxqmJYm4RlA22TDo2GZ7mmXRPBlyylCdiENhY63-y2pZFCGXo3eg_VBvcI0RlNaogafOdM368GrVAVTDhdorX9OomDLwc2VrbU2Vkx3mIH-Tq4ytUJro&c=35t4OWDpXdKi4dJVR6z1cXp9x3D6ZCmjn1mHoG4gjqiMuCtvtIjsow==&ch=Lw-YLaE_0IhAssxuox64TJZ6mJeiV69zK7RYyzgqOhzBJhBvML5zPg==]
This webinar offers 0.15 CEUs and 1.5 CPDs. To receive continuing education
credit
for this webinar you must register for credits for a nominal fee.
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Training Calendar
AFSA Beginning
Fire Sprinkler System
Planning School
More Information
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May 11 - 22, 2015
March 16 - 27, 2015
Sold Out!
Check our calendar to view upcoming training.
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