Re: Seismic Ratings of IBM Racks

["Jim Franz" <franz400@xxxxxxxxxxxx>]

When a rack says "seismic zone 4" that is the US Seismic map
http://www.disastercenter.com/build/seismic.htm  which has 4 zones.
It's not just the zone rate of a rack but how it is installed, wired, 
connected to the floor (and ceiling), etc.
The NEBS (Network Equipment Building System) standards have "levels" that 
indicate conforming to increased spec levels
http://en.wikipedia.org/wiki/Network_Equipment-Building_System

The IBM planning manual mentions NEBS -GR-1089-Core but not a "seismic 
rating". I don't see anything that says IBM "seismic tested" this rack (Nebs 
GR 63 or Bellcore GR 63)) but it's possible & just not in brochure..
http://publib.boulder.ibm.com/infocenter/powersys/v3r1m5/topic/p7had/p7had_77x_78x.pdf

This is interesting video on seismic isolation
http://www.youtube.com/watch?v=XddqDQVnutQ

from a testing lab  - GR-63 is the physical installation & building and 
GR-1089 is more electrical & cabling:
The two most common tests are GR-63-CORE, Network Equipment-Building System 
Requirements: Physical Protection, and GR-1089-CORE, Electromagnetic 
Compatibility and Electrical Safety -- Generic Criteria for Network 
Telecommunications Equipment.

(i'm not an expert in this but have put equipment in earthquake zone 4 
before (and cust chose not to come even close to a spec))
.
jim franz

----- Original Message ----- 
From: "Kirk Goins" <kirkgoins@xxxxxxxxx>
To: "Midrange-L" <midrange-l@xxxxxxxxxxxx>
Sent: Monday, February 28, 2011 6:25 PM
Subject: Seismic Ratings of IBM Racks


> Anyone have a reference as to what specs are for a 0551 or 7014 rack in
> regards to Seismic Ratings?
>
> --
> Kirk
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