The issue of interior vs exterior has always been a tad on the poorly
written side. Personally I always provided an interior OS&Y on the
riser and viewed exterior valves for the supply main but 13 opens the
door to using just the curb box. Yes 8.16.1.1.1 states an indicating
valve on all systems but then the annex discusses using an exterior
valve in place of the interior. As part of the list for exterior
valves is the key operated valve. I've always considered this the
valve in the roadway box as discussed under 8.16.1.1.2.3 (Supervision).
Again I would never advocate using it as the only valve but 13
certainly opens the door for it.
Roland
On Jun 18, 2008, at 10:21 AM, [EMAIL PROTECTED] wrote:
I don't have a copy of NFPA 13-2007, but in the 2002 edition, 8.15.1.1
would prohibit use of a curb box valve in a sprinkler system supply
line.
They would be permissible for hydrant control valves only, right?
If I'm
the one missing something, let me know.
James L.(Jim) Roberts, PE/SET
Fluor Corporation
100 Fluor Daniel Drive - C104F
Greenville, SC 29607
864.281.5149
864.281.4916(Fax)
Roland Huggins <[EMAIL PROTECTED]>
Sent by: [EMAIL PROTECTED]
06/18/2008 11:13 AM
Please respond to sprinklerforum
To
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Subject
Re: PIV 40ft from Building
Mr Frustrated
This requirement has been in standard a long time so without
researching it, I suspect only Chet Schirmer may know what the
committee was thinking.
I have always wondered why we still had it in the standard since it
had to have been driven from the old days when mainly industrial
facilities had sprinklers. It even refers to the plant yard in the
text. It is so seldom used today. I know the DOE plant that I did 5
years of hard time at, there were no PIV's.
Why don't you drop the PIV and just use the curb valve? IF they
really want exterior access, put in a wall PIV.
I'll look to see if there is a proposal that we can hang a comment on
for the ROC meeting. I don't remember anything touching this so it'll
probably be next cycle. Put it on your list of items to submit.
Roland
On Jun 18, 2008, at 7:43 AM, Mark Sornsin wrote:
Forum:
Anyone know the reason WHY PIVs are to be located at least 40 ft.
from
the building (on a fire service line piped into the building)?
I have heard some theories - like to keep the valve free from a
collapsing wall. But I am curious if any of you have any definitive
explanations for that number. Why not 30 ft.? Why not 50 ft.
We are dealing with an AHJ who is requiring we pipe an underground an
additional 200+ ft. around a corner just so our PIV can be at least
40
ft. from the building. Otherwise, if we pipe straight out the
building,
the public right-of-way is such that we'd be only 31 ft. from the
building with the PIV. This is not good enough for this gentleman
since, as he says, it is POSSIBLE for you to get it 40 ft. away (with
the 200+ ft. of underground). If there was no other way, he would
have
allowed the 31 ft. separation.
Frustrated-in-Fargo, PE
Fire Protection Engineer
Ulteig Engineers, Inc.
3350 38th Avenue S.
Fargo, ND 58104-7079
Direct: 701. 280.8591
Fax: 701.280.8739
Cell: 701.371.5759
[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>
www.ulteig.com <http://www.ulteig.com/>
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