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Re: Aluminum

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The figure I used was for ultimate strength.  The criteria for "allowable"
would vary by which governing body/application it is used.

Greg
-----Original Message-----
From: Christopher Wright <chrisw(--nospam--at)skypoint.com>
To: SEAOC Newsletter <seaint(--nospam--at)seaint.org>
Date: Sunday, June 20, 1999 1:15 PM
Subject: Re: Aluminum


>>30,000 psi  Design of machine elements - 5th Ed. M.F. Spotts.
>Not even close. AA allowables for shear in webs for building design is 12
>ksi. Tensile allowable is on 19 ksi. For welded structures these numbers
>go to 7.5 ksi and and 11 ksi. Values are lower for bridge type
>structures. Shearing yield and ultimate stress are 20 ksi and 27 ksi. Get
>hold of 'Specifications for Aluminum Structures,' from the Aluminum
>Association quick.
>
>Christopher Wright P.E.    |"They couldn't hit an elephant from
>chrisw(--nospam--at)skypoint.com        | this distance"   (last words of Gen.
>___________________________| John Sedgwick, Spotsylvania 1864)
>http://www.skypoint.com/~chrisw
>
>