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Re: Single or Double angle bending member

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Joe -

When you say "toe to toe", do you mean configured like a channel?
Why not use a channel then?  From your description, I see a
"channel-with-a-gap" header carrying a chunk of masonry wall above
it.  Is this the correct picture?  Is a standard channel just too
wide, then?

The biggest issue with treating a pair of angles like a "double angle"
is in relation to whether or not the angles will act as a unit,
especially regarding buckling (either flexural or compressive).

Things to consider:
1) How are the two angles tied together?
2) Are the ties frequent enough to cause the members to act as
	a unit?
3) What failure modes can occur that might negate the "double angle"

Sounds like an interesting problem.


Charles Hamilton, PhD EIT               PGR and Lecturer
Department of Civil and                 Phone: 949.824.3752
    Environmental Engineering           FAX:   949.824.2117
University of California, Irvine        Email: chamilto(--nospam--at)

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