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weak axis bending for a channel lintel
are there any additional manuals available that provide a better analysis of weak axis bending for steel channels? asd does not address the bending stress for this shape. i have a 12' opening and am trying to decide if an i beam may be needed instead.

at the risk of oversimplifying this, i would use wsd method, 0.66 x fy. no point in exact accuracy for this. deflection will probably control anyway.
asd equation f1-1 perhaps?
i really do not like to use angles and channels (or any singly symmetrical members) for flexure.
aisc allows the use of 0.75fy for weak axis bending stress for i, h shaped sections, rectangular plates and solid bars. see equation f2-1. this is due to the fact that these members tend to fail in yield and not buckling.
however, to be on the conservative side, i would use equation f2-2 (0.6fy) for a channel.
regards,
lutfi

2009-09-16, 07:21 PM	#1
huangyhg 超级版主注册日期: 04-03 帖子: 18592 精华: 36 现金: 249466 标准币资产: 1080358888 标准币	weak axis bending for a channel lintel weak axis bending for a channel lintel are there any additional manuals available that provide a better analysis of weak axis bending for steel channels? asd does not address the bending stress for this shape. i have a 12' opening and am trying to decide if an i beam may be needed instead. at the risk of oversimplifying this, i would use wsd method, 0.66 x fy. no point in exact accuracy for this. deflection will probably control anyway. asd equation f1-1 perhaps? i really do not like to use angles and channels (or any singly symmetrical members) for flexure. aisc allows the use of 0.75fy for weak axis bending stress for i, h shaped sections, rectangular plates and solid bars. see equation f2-1. this is due to the fact that these members tend to fail in yield and not buckling. however, to be on the conservative side, i would use equation f2-2 (0.6fy) for a channel. regards, lutfi __________________ 借用达朗贝尔的名言：前进吧，你会得到信心! [url="http://www.dimcax.com"]几何尺寸与公差标准[/url]