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when do we not use grade 50?
i plan on attending a two-day course, at the university of wisconsin, entitled "structural bracing for lateral loads and stability". one of the "key topic areas" to be discussed will be "when not to use grade 50 steel".
can anyone furnish some "pre"-info or thoughts as to what might be discussed?
when do we not use grade 50?
thank you!
check out our whitepaper library.
50 ksi yield is still not commonly or reliably available for angles, channels, pipe, or tube shapes yet.
also some argue that for ductility during a seismic event you don't want the extra strength.
i've got a project with a bit of a hiccup... the material was spec'd at grade 300 (45ksi) and the shop drawings indicate grade 350 (50ksi)... the members were proportioned using plastic design which requires a class 1 section in canada... the grade 350
another area where grade 50 steel should not be used is with crane runwat girders. in most cases these
dear eit2
a good question regarding wide-flange shapes might be when can you even find these shapes that are true a36 anymore? wide-flange shapes these days are all triple or quadruple certified as a36, a572 gr50, a992 and a709. if you want a36, some suppliers may white-out the other specs for you. check your yield strengths! strong column - weak beam is being defeated by the producing mills. have fun
koz

2009-09-16, 08:45 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	when do we not use grade 50 when do we not use grade 50? i plan on attending a two-day course, at the university of wisconsin, entitled "structural bracing for lateral loads and stability". one of the "key topic areas" to be discussed will be "when not to use grade 50 steel". can anyone furnish some "pre"-info or thoughts as to what might be discussed? when do we not use grade 50? thank you! check out our whitepaper library. 50 ksi yield is still not commonly or reliably available for angles, channels, pipe, or tube shapes yet. also some argue that for ductility during a seismic event you don't want the extra strength. i've got a project with a bit of a hiccup... the material was spec'd at grade 300 (45ksi) and the shop drawings indicate grade 350 (50ksi)... the members were proportioned using plastic design which requires a class 1 section in canada... the grade 350 another area where grade 50 steel should not be used is with crane runwat girders. in most cases these dear eit2 a good question regarding wide-flange shapes might be when can you even find these shapes that are true a36 anymore? wide-flange shapes these days are all triple or quadruple certified as a36, a572 gr50, a992 and a709. if you want a36, some suppliers may white-out the other specs for you. check your yield strengths! strong column - weak beam is being defeated by the producing mills. have fun koz __________________ 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]