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double angle lintel
hello,
i am designing a double angle lintel for a 9' opening in an exisitng clay brick wall. the wall is fairly large, 16" thick solid, about 50' tall. i am going to use a double 8x8x9/16 angle to jacket the 16" wall.
loading is 1000 plf unfactored applied to the horizontal legs of the angles - assuming arching action carries the loads 6' above the lintel.
my question concerns the eccentric loading of the angles. i am going to use a weld plate below the horz angle to prevent rotation of the angles. 1/2 x 6 x 12 with full weld in the field after the lintel is installed. i checked the weld and plate ad seems very consv. against:
p=2800 lb applied 4" from heel of angle
m=2800lb x 4" arm = 11,200 inlb
t=11,200 inlb / 2.2" (y from asd steel man) = 5100 lb
the plate and weld are very consv for this load, can anyone suggest further checks or confirm that my anaylsis is sufficient for this design?
correction: p should be 5600 lb 4" from heel, yeilding 11200 lb force applied to the weld plate

2009-09-08, 07:20 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	double angle lintel double angle lintel hello, i am designing a double angle lintel for a 9' opening in an exisitng clay brick wall. the wall is fairly large, 16" thick solid, about 50' tall. i am going to use a double 8x8x9/16 angle to jacket the 16" wall. loading is 1000 plf unfactored applied to the horizontal legs of the angles - assuming arching action carries the loads 6' above the lintel. my question concerns the eccentric loading of the angles. i am going to use a weld plate below the horz angle to prevent rotation of the angles. 1/2 x 6 x 12 with full weld in the field after the lintel is installed. i checked the weld and plate ad seems very consv. against: p=2800 lb applied 4" from heel of angle m=2800lb x 4" arm = 11,200 inlb t=11,200 inlb / 2.2" (y from asd steel man) = 5100 lb the plate and weld are very consv for this load, can anyone suggest further checks or confirm that my anaylsis is sufficient for this design? correction: p should be 5600 lb 4" from heel, yeilding 11200 lb force applied to the weld plate __________________ 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]