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bracing freespan glulam
interior long-span glulam beam supported only at ends, and supporting a rolling swaying divider wall which bunches up at one end, ... what is the requirement for intermediate lateral bracing? there's nothing in apa or aitc that i can find, and it's limited by deflection, so is not anywhere near critical load, but there's nothing out in the middle for it to brace to except up to the roof, and any tie to the roof brings the immediate reverse-engineer permit review penalty of new roof loading, so that's not gonna happen! cap the glulam with a horizontal 1-1/8 x12 microlam into a tee-beam? not needed?
in the nds, the maximum allowable flexural stress of wood
don't forget the torsion, assuming the curtain is hung from the bottom of the beam.
it looks like a situation where conservative design is appropriate. depending on the span, you might want to choose a double beam with x-bracing top and bottom.
ba

2009-09-07, 04:42 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	bracing freespan glulam bracing freespan glulam interior long-span glulam beam supported only at ends, and supporting a rolling swaying divider wall which bunches up at one end, ... what is the requirement for intermediate lateral bracing? there's nothing in apa or aitc that i can find, and it's limited by deflection, so is not anywhere near critical load, but there's nothing out in the middle for it to brace to except up to the roof, and any tie to the roof brings the immediate reverse-engineer permit review penalty of new roof loading, so that's not gonna happen! cap the glulam with a horizontal 1-1/8 x12 microlam into a tee-beam? not needed? in the nds, the maximum allowable flexural stress of wood don't forget the torsion, assuming the curtain is hung from the bottom of the beam. it looks like a situation where conservative design is appropriate. depending on the span, you might want to choose a double beam with x-bracing top and bottom. ba __________________ 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]