Of Steve Leyton via Sprinklerforum
Sent: Friday, February 25, 2022 1:51 PM
To: sprinklerforum@lists.firesprinkler.org
Cc: Steve Leyton ; Gary Howard, P. Eng.
; John Hoffman
Subject: RE: [EXTERNAL] 8 inch sprinkler pipe fall from factory ceiling
Fire sprinkler systems have historically been
outh | Suite 210 | San Diego, CA 92108
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> -Original Message-
> From: Sprinklerforum On
> Behalf Of Gary Howard, P. Eng. via Sprinklerforum
> Sent: Friday, February 25, 2022 10:45 AM
&
-Original Message-
From: Sprinklerforum On Behalf
Of Gary Howard, P. Eng. via Sprinklerforum
Sent: Friday, February 25, 2022 10:45 AM
To: sprinklerforum@lists.firesprinkler.org
Cc: Gary Howard, P. Eng. ; John Hoffman
Subject: Re: [EXTERNAL] 8 inch sprinkler pipe fall from factory ceiling
I should note that it was windy when I was investigating 3 days after the
event. I will check that for the date of loss. However, the clamps should
redesigned to handle this, no?
> On Feb 25, 2022, at 11:19 AM, John Hoffman via Sprinklerforum
> wrote:
>
> How windy was it? Steel joisted
How windy was it? Steel joisted building roofs can move up and down a lot,
several inches, in the wind. Over time, this up and down could have an impact
on the pipe support system. You might check that and its potential affect on
pipe hangers. A structural engineer can probably look at the
Thanks Craig. I see your posts all the time.
1 The grooves have not been measured in detail yet, but they are not suspect
2. Coupling bolt torques were not checked. Good point to note
3. It is part of 5 dead-end runs from a common manifold. Yes, as you describe
but the UG system comes in the
I've been involved in several system failure investigations. There are
numerous causes.
Things to look for:
1. Rolled grooves: were the grooves in the pipe determined to have been done
correctly and to manufacturer's specifications?
2. Were coupling bolts torqued to proper spec. This one is a
