Well apparently this is more common than I thought. So how do you deal with
wood frame apartments and vertical systems? Seem like the GC is complaining
the day we start that we (with the other mechanical trades) are slowing down
the sheet rockers. Of course the rockers were slowing down the tapers and
the tapers were slowing the cabinet guys...... Typically, they want to rock
the highest floor first just after RI and if the entire system isn't
complete you can't hydro. Or at least if a unit is fully RI's by all the
rockers were in the next day. Now I'm the first to admit these types of
buildings aren't our niche but we do them occasionally. Now in a past life
as AHJ we built a lot of these I never saw one where the sprinkler
contractor had a chance to finish RI and hydro before rock. Rockers were
usually on the same floor on the other end of the building chasing all the
mechanical trades.
I guess as AHJ I had the power to tell the GC to finish RI before rock. It
never dawned on me though to be that much of a PITA. If the pipe was
present and hung right and sized right and heads were spaced right I would
approve to cover. That's the way it is through out these parts except for
one community that recently changed their policy. Then there is the nuance
of cold weather. At the end we did the hydro usually about 2 hrs. before
the final flows and tampers. I used the 2 hrs. to do a final walk through.
Yes occasionally there were leaks behind finish wall. 1/2 the time it was
the fitters install defect, 1/2 was someone from another field missing the
nail plate (why they use 3" finish nail I'll never know. Third 1/2 was other
issues like cracked pipe.
Chris Cahill, P.E.
Fire Protection Engineer
Sentry Fire Protection, Inc.
763-658-4483
763-658-4921 fax
Email: [EMAIL PROTECTED]
Mail: P.O. Box 69
Waverly, MN 55390
Location: 4439 Hwy 12 SW
Waverly, MN 55390
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Coastal
Sent: Wednesday, July 16, 2008 7:03 AM
To: Chris Cahill
Subject: Re: Rough-in inspections
Hello Chris,
We do that on all systems here for the rough inspection. The project gets to
wait to cover it up until the hydro is done. All the better reason for them
to let me in first.
--
Best regards,
Charles Thurston
Coastal mailto:[EMAIL PROTECTED]
Monday, July 14, 2008, 4:47:50 PM, you wrote:
> Any AHJ's requiring 200 psi hydrostatic tests to be done during the
rough-in
> inspection? Not really a problem with ACT ceilings. Certainly ties
things
> up in vertical residential systems where you can't zone it.
>
> Chris Cahill, P.E.
> Fire Protection Engineer
> Sentry Fire Protection, Inc.
>
> 763-658-4483
> 763-658-4921 fax
>
> Email: [EMAIL PROTECTED]
>
> Mail: P.O. Box 69
> Waverly, MN 55390
>
> Location: 4439 Hwy 12 SW
> Waverly, MN 55390
>
> _______________________________________________
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