Owen,
What money are you suggesting we save? I'm completely lost here.
An NFPA 13D system control valve doesn't require a tamper switch, not
from 13D or the CFC, right? I don't quite understand why you believe
this is so in error.
While we're on the subject of money, I think it's worth asking why
a system designed to serve only NFPA 13D systems needed a 2" meter.
Based on some research Steve Leyton did a short time ago, if this were
truly individual 13D systems the cost of the larger meter added
thousands of dollars to the cost, perhaps tens of thousands.
Another relevant question to me might be why there's a backflow
preventer in the first place? No possibility of cross connection from a
stand alone 13D system, right? Or was it one of those things the water
purveyor mandated?
*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 10/05/2015 11:02 AM, firs...@aol.com wrote:
I did, they said it's a 13D even though it is a stand alone and has an FDC. That's
why I'm asking questions on the forum. Again, it's a five unit building with no
tampers on double OS&Y. They are claiming 13D exception to tampers in CBC. Can
they do that? If so we can all save money on our next installations by calling it a
13D and use that exception.
Sent from my iPhone
On Oct 5, 2015, at 10:46 AM, Steve Leyton <st...@protectiondesign.com> wrote:
So call the AHJ and ask for the basis of design.
SL
-----Original Message-----
From: Sprinklerforum
[mailto:sprinklerforum-boun...@lists.firesprinkler.org] On Behalf Of
firs...@aol.com
Sent: Monday, October 05, 2015 10:44 AM
To: sprinklerforum@lists.firesprinkler.org
Subject: Re: Monitoring 13D control valves in California
It appears that both the AHJ and contractor have made mistakes on this
project. I am interested in finding out what exactly happened. We should
all play by the same rules. Im trying to figure out what is correct here
according to standard, CFC & CBC. Like I said, it looks like a 13R but
now they're saying its a 13D without DCVA monitoring.
Sent from my iPhone
On Oct 5, 2015, at 9:48 AM, Steve Leyton <st...@protectiondesign.com>
wrote:
Are you doing a 3rd party inspection or some sort of risk
management/loss prevention analysis? Why not just call the AHJ or
installing contractor and ask for approved basis of design?
SL
-----Original Message-----
From: Sprinklerforum on behalf of firs...@aol.com
Sent: Mon 10/5/2015 9:37 AM
To: sprinklerforum@lists.firesprinkler.org
Subject: Re: Monitoring 13D control valves in California
Hi Steve, thanks for responding. Isn't the CBC more restrictive
therefore you can't allow something less? This particular system looks
like a 13R but they failed to provide electrical for tamper switches. So
now they argue it is a 13D serving a building with 5 townhouse's
separated by 1 hour construction. My thinking is since it is 5 units,
not one or two family dwelling, the exception for electrical monitoring
does not apply. Therefore tampers are required. Am I correct?
Sent from my iPhone
On Oct 5, 2015, at 8:52 AM, Steve Leyton <st...@protectiondesign.com>
wrote:
It's possible the AHJ has accepted these to be of limited area if the
sub-systems serve less than 20 sprinklers. NFPA offers multiple
solutions for "monitoring", including the locking of valves. Perhaps
the AHJ approved an alternative to electronic supervision.
Steve L.
-----Original Message-----
From: Sprinklerforum
[mailto:sprinklerforum-boun...@lists.firesprinkler.org] On Behalf Of
firs...@aol.com
Sent: Monday, October 05, 2015 7:38 AM
To: sprinklerforum@lists.firesprinkler.org
Subject: Monitoring 13D control valves in California
The California Building Code requires sprinkler control valves to be
electrically monitored. One of the exceptions is One and Two Family
Dwellings, 13D.
What if it is a stand alone 13D system? (2" water meter with one DCVA
to a 2" underground, serving a row of 5 town homes with one hour
separations between units. The 2" underground branches off to each
unit.
Each unit has it's own flow switch and test valve).
The exception specifically states for one and two family dwellings
because the control valve is before the domestic service so shutting
off the sprinklers shuts off the domestic therefor it is self
monitoring.
The stand alone serving 5 units does not have this valve arrangement
therefore it would require electric monitoring per CBC.
Am I thinking correctly? According to CBC the two control valves on
the DCVA would need tampers, correct?
Owen Evans
Sent from my iPad
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