Bill,
After rereading, I don't think I answered your question.
My interpretation of 9.3.6.3 is asking for an end of line restraint--In the
handbook it explains as follows "A wraparound U-hook or other restraint at
the end of each branch line, as required by 9.3.6.3, prevents the piping
from whipping or bouncing out of hangers, which is a possibility, even with
conventional U-Hooks."
Bobby Gillett
Project Manager
[EMAIL PROTECTED]
(731)-424-0130
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of
[EMAIL PROTECTED]
Sent: Wednesday, June 18, 2008 1:54 PM
To: [email protected]
Subject: Restraint of Branch Lines
2007, 9.3.6.3 - The end sprinkler on a line shall be restrained against
excessive vertical and lateral movement.
1. Can I assume the word line means "branch line" based on the title of
9.3.6?
2. Would the end sprinkler include sprinklers on drops, arm-overs, and
return bends?
3. Would "excessive" be defined as using a restraint not listed for
vertical and/or lateral movement or not meeting 9.3.6.1(5)?
Someone has asked me to approve a particular brace but then I realized I
had no idea how many needed to be installed!
(Getting old but still learning)
Bill Brooks
William N. Brooks, P.E.
Brooks Fire Protection Engineering Inc.
372 Wilett Drive
Severna Park, MD 21146
410-544-3620 Phone
410-544-3032 FAX
412-400-6528 Cell
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