No sale here, Jeff.
Under the parameters you described, a four story building, with approx.
30K sf per floor, if I were to follow 8.2.1, then the control valves are
irrelevant. The standard clearly indicates those limitations apply to
the maximum area _*on any one floor supplied by one automatic sprinkler
system riser*_.
I don't read the system as covering more than 30K sf on any one floor,
and based on 1.1.3, the design is only to be based on one area of fire
origination in a building.
How did you decide to add the floor areas cumulatively and determine
that it would exceed the maximum coverage area?
I still don't get it. Maybe it's a slow day here.
*Ken Wagoner, SET
*Parsley Consulting***
*350 West 9th Avenue, Suite 206
*Escondido, California 92025
*****Phone 760-745-6181*
Visit our website <http://www.parsleyconsulting.com/> ***
On 09/01/2016 11:31 AM, Jeff Bridges wrote:
I didn’t
I was showing if it all is one system as Ron was eluding to, floor
controls not considered as separation, the cumulative total of floor
space being covered under a single riser would be 120K
BUT if floor controls ARE considered as a riser, each RISER is
covering 30K.
I never said that 30K is a max per riser but if, under my example,
floor controls are merely considered making the system easier to drain
and not a separate system, then it exceeds 52K as allowed.
Right?
Jeff Bridges
*JB**Fire **Protection Inc*
*(888) 523-4737 Fax (714) 578-0901*
*/Fire Sprinklers Save Lives & Property/*
www.jbfireprotection.com <http://www.jbfireprotection.com/>*//*
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*From:*Sprinklerforum
[mailto:[email protected]] *On Behalf Of
*Parsley Consulting
*Sent:* Thursday, September 01, 2016 11:07 AM
*To:* [email protected]
*Subject:* Re: 5 year fire sprinkler Obstruction Assessment - What
items in a system define it as a separate wet pipe system?
Jeff,
I'm kind of curious how you've decided that 30,000 square foot per
floor exceeds the allowable floor space per riser. Aren't the values
in 8.2.1 supposed to be applied to any one floor area?
*Ken Wagoner, SET
**Parsley Consulting
350 West 9th Avenue, Suite 206
Escondido, California 92025
**Phone 760-745-6181
**Visit our website <http://www.parsleyconsulting.com/>*
On 09/01/2016 10:45 AM, Jeff Bridges wrote:
I would respectfully disagree with the below analogy.
Example: (4) Story building consisting of 30K SF per floor
Single lead-in supply- combo standpipe with floor controls.
How can it be considered a single system when it exceeds the
allowable floor space per riser?
Just sayin’
Jeff Bridges
JBFP Inc
**
//
/I have to disagree with this analysis that a floor control valve
defines a system. A floor control valve is not even defined
individually in 2013 whereas a sprinkler system is (no mention of
floor control valves) as are control valves. As always, I would
consider a system to be what it has always been and the addition
of the required floor control valve and associated requirements on
systems in multi-story buildings just nationally codifies a common
practice hereabouts of building a system that has isolatable
floors. This way an entire large building does not need to be
drained to make a repair or for a T.I., leaves fore protection in
service on floors not effected and also conserves water. I'm open
to an argument that changes my mind but this one doesn't./
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