Unformatted text preview: it will be this or larger if we use angles LLBB [long legs back to back]). r z = 0.76. This is less than 1.2, so if we do nothing, we will not satisfy L z /r z <300. Fix this by adding fillers to reduce L z (note this doesn’t reduce L, just reduces the length over which a single angle acts by itself). If we add one filler L z = L/2 = 15’ Æ L z /r z = 237, so this satisfies code (is less than 300). Standard of practice is to have L z /r z < max (L/r x , L/r y ). Because r y is smaller than r x. L/r y will be bigger than L/r x . L/r y = 261. Thus one filler also satisfies L z /r z < max (L/r x , L/r y )....
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 Fall '09
 Shield
 double angle, llbb

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