[147419] in cryptography@c2.net mail archive
Re: [Cryptography] Crypto Standards v.s. Engineering habits - Was:
daemon@ATHENA.MIT.EDU (Bill Frantz)
Tue Oct 1 16:20:38 2013
X-Original-To: cryptography@metzdowd.com
Date: Tue, 1 Oct 2013 13:12:40 -0700
From: Bill Frantz <frantz@pwpconsult.com>
To: cryptography@metzdowd.com
In-Reply-To: <592511ED-B293-4886-AA7C-A1D0C0596975@webweaving.org>
Errors-To: cryptography-bounces+crypto.discuss=bloom-picayune.mit.edu@metzdowd.com
On 10/1/13 at 12:29 AM, dirkx@webweaving.org (Dirk-Willem van
Gulik) wrote:
>While in a lot of other fields - it is very common for 'run of
>the mill' constructions; such as when calculating a floor,
>wooden support beam, a joist, to take the various standards and
>liberally apply safety factors. A factor 10 or 20x too strong
>is quite common *especially* in 'consumer' constructions.
In cave rescue the National Cave Rescue Commission (a training
organization) uses a 7:1 system safety ratio in its trainings.
This is for building systems where people could be seriously
hurt or killed if the system fails.
Cheers - Bill, NCRC instructor
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