>From - Sat Mar 02 00:57:16 2024
X-BeenThere: tscm-l2006_at_googlegroups.com
Received: by 10.229.106.92 with SMTP id w28ls32559qco.2.p; Thu, 11 Mar 2010
04:00:40 -0800 (PST)
Received: by 10.229.222.143 with SMTP id ig15mr437797qcb.28.1268308840825;
Thu, 11 Mar 2010 04:00:40 -0800 (PST)
Received: by 10.229.222.143 with SMTP id ig15mr437796qcb.28.1268308840788;
Thu, 11 Mar 2010 04:00:40 -0800 (PST)
Return-Path: <j..._at_pipeline.com>
Received: from pop03.mail.atl.earthlink.net (pop03.mail.atl.earthlink.net [207.69.200.48])
by gmr-mx.google.com with ESMTP id 18si2167940qyk.12.2010.03.11.04.00.40;
Thu, 11 Mar 2010 04:00:40 -0800 (PST)
Received-SPF: neutral (google.com: 207.69.200.48 is neither permitted nor denied by best guess record for domain of j..._at_pipeline.com) client-ip 7.69.200.48;
Authentication-Results: gmr-mx.google.com; spf=neutral (google.com: 207.69.200.48 is neither permitted nor denied by best guess record for domain of j..._at_pipeline.com) smtp.mail=j..._at_pipeline.com
Received: from user-108722i.cable.mindspring.com ([64.131.136.82] helo=JY11.pipeline.com)
by pop03.mail.atl.earthlink.net with esmtp (Exim 3.36 #1)
id 1Nph4C-0006cV-00
for tscm-..._at_googlegroups.com; Thu, 11 Mar 2010 07:00:40 -0500
X-Mailer: QUALCOMM Windows Eudora Version 7.1.0.9
Date: Thu, 11 Mar 2010 07:00:45 -0500
To: tscm-l2006_at_googlegroups.com
From: John Young <j..._at_pipeline.com>
Subject: Re: [TSCM-L] {4847} Specialized sheetrock for Vaults & SCIF's
In-Reply-To: <380-22010341164123557_at_M2W104.mail2web.com>
References: <380-22010341164123557_at_M2W104.mail2web.com>
Mime-Version: 1.0
Content-Type: text/plain; charset="us-ascii"; formatowed
Message-Id: <E1Nph4C-0006cV-00_at_pop03.mail.atl.earthlink.net>
Thanks. This looks like a promising product. More description at
another page and its links:
http://www.quietsolution.com/RF_Application_Notes_113005_scn.pdf
Caution: metal screws specified should not be used to attach the
drywall for they break the quality of RF and acoustic control. Use
adhesive or non-metal screws.
The Quietwall brochure does not mention this fairly common mistake
in drywall RF and acoustic construction. Although the brochure is
pretty good otherwise.
Beware of nails and screws in the wood studs which are perfect conductors.
Use wood plates and heads not just studs. Wood should be thoroughly
dry and kept dry - moisture is a conductor - and wood siphons moisture
from the air.
Preaching to the choir here:
And there must be stringent RF protection at any penetrations for door
and window openings, wiring, plumbing and other services, as specified
in Tempest protection standards. And abide red/black principles.
It is the interface of separate trades' work that all too often fails.
ASTM and UL testing of separate assemblies as shown in the product
brochures do not always cover overall installations. One uninformed
trade can botch the most sophisticated installations, if not at the
initial construction then later in repairs and renovation.
A mandatory Tempest test will show defects. Expect defects in
original installation and later wear and tear, stupidity and
sloth. An expensive installation can be pure bunkum without
follow-on testing regularly.
As the master ladder and flashlight crews know the defects are
usually in the hardest to examine and test places. Call them what
the hell nobody will ever know backdoors -- the golden eggs of spies.
Yeah, yeah, make work for the specialists who are never ever not
paranoid enough and impossible to please, humor or give enough
pay and love beyond what they expertly apply themselves.
Received on Sat Mar 02 2024 - 00:57:16 CST