Need a book? Engineering books recommendations...

Return to index: [Subject] [Thread] [Date] [Author]

RE: aluminum design

[Subject Prev][Subject Next][Thread Prev][Thread Next]
Why would you recommend considering aluminum as a brittle material, unless you're specifying an unusual grade/temper? Most aluminums have an Fu that is about 1.25 to 1.4 times Fy (better in some 2000 series, iirc). It's not quite "bubble gum", like 300 series stainless, and the plastic region isn't quite as flat as steel, but it does have a well documented plastic range. Admittedly, aluminum does not have a fatigue limit but that shouldn't be an issue for seismic loadings, as the number of cycles is low. Unless you're asking for castings, or specialty aluminums (Beryllium Aluminum is my favorite exotic) - none of which are economical in a building - it should perform to its material properties just fine (decent for stress, sucky for deflection).

Jordan

At 04:13 PM 1/31/2005 +0000, you wrote:
The UBC contained provisions for aluminum design, but with the code merger and the lack of representation by the aluminum industry, there are very few "building code" provisions in ASCE or IBC. There is a 2005 Aluminum Design Manual due out soon, and they too have gutted the seismic and wind provisions. When it comes to designing in aluminum, you must use first principles. For wind and snow it is not a big deal. For seismic design, you should assume a linear performance for a brittle material. That said, getting it through a plan checker might be problematic.

Regards,
Harold Sprague




From: "John J. Treff" <jjtreff(--nospam--at)hotmail.com>
Reply-To: <seaint(--nospam--at)seaint.org>
To: seaint(--nospam--at)seaint.org
Subject: aluminum design
Date: Fri, 28 Jan 2005 23:48:21 +0000

Hello,
Is there such a thing as "American Institute of Aluminum Construction"? If there isn't, can any of you tell me who's the authority in the US for aluminum design? Is there a code for it?

Thank you,

JJ

_________________________________________________________________
Express yourself instantly with MSN Messenger! Download today - it's FREE! http://messenger.msn.click-url.com/go/onm00200471ave/direct/01/


******* ****** ******* ******** ******* ******* ******* ***
*   Read list FAQ at: http://www.seaint.org/list_FAQ.asp
* * This email was sent to you via Structural Engineers * Association of Southern California (SEAOSC) server. To * subscribe (no fee) or UnSubscribe, please go to:
*
*   http://www.seaint.org/sealist1.asp
*
* Questions to seaint-ad(--nospam--at)seaint.org. Remember, any email you * send to the list is public domain and may be re-posted * without your permission. Make sure you visit our web * site at: http://www.seaint.org ******* ****** ****** ****** ******* ****** ****** ********



******* ****** ******* ******** ******* ******* ******* ***
*   Read list FAQ at: http://www.seaint.org/list_FAQ.asp
* * This email was sent to you via Structural Engineers * Association of Southern California (SEAOSC) server. To * subscribe (no fee) or UnSubscribe, please go to:
*
*   http://www.seaint.org/sealist1.asp
*
* Questions to seaint-ad(--nospam--at)seaint.org. Remember, any email you * send to the list is public domain and may be re-posted * without your permission. Make sure you visit our web * site at: http://www.seaint.org ******* ****** ****** ****** ******* ****** ****** ********