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RE: Ladders, Cages, Walkways and Stairs

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My guess that Tom's client is his employer (APA)...I guess this cause I
know that they are expanding their testing lab (they were in the process
of starting that work when I was in Tacoma in January and had lunch with

Adrian, MI

On Thu, 23 Mar 2006, David Maynard wrote:

> For safety, if it is NOT a mining site, normally OSHA governs.  If it is a
> mine, then you are governed by MSHA.  For this kind of stuff, ladders,
> cages, walkways, and stairs, I believe CFR 29 will give you everything you
> need.  This web site,, has all of
> the CFR's for you to browse for free either by navigating it, or by a
> search.  Now, the client may have their own design standards or have adopted
> portions of a certain code that will be followed on their property for
> design stuff like this.  For example, for stairways, OSHA give varying
> angles and corresponding rise/run dimensions for stairways.  IBC, I believe,
> says "Thou shalt use 7-11."  So, while OSHA may govern, the client may say
> to make all stairways 7-11 because, well, that's the industry standard.  So,
> stuff like this you will want to check.  Hope this helps.
> Dave Maynard, PE
>   _____
> From: Tom Skaggs [mailto:tom.skaggs(--nospam--at)]
> Sent: Thursday, March 23, 2006 9:41 AM
> To: seaint(--nospam--at)
> Subject: Ladders, Cages, Walkways and Stairs
> When one designs ladders, ladder cages, walkways and stairs for commercial
> clients, what is the governing design standard?  It is an OSHA, ASTM, ASME,
> ANSI standard or other?
> Thanks,
> Tom

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