几何尺寸与公差论坛------致力于产品几何量公差标准GD&T (GDT:ASME)|New GPS(ISO)研究/CAD设计/CAM加工/CMM测量 - 查看单个帖子

field welded moment connections-ibc
could someone explain their understanding of the construction requirements of a field welded moment connection for a omf in seismic site class d between a beam flange and column flange? specifically, how are the welds supposed to be run out/ground off at their ends to eliminate stress risers. also, i have been told that the bottom backer bar has to be removed, the weld back gouged and a 5/16 fillet placed over the original weld. is this requirement only for a omf? only in class d? why is the bottom weld different then the top weld?
any thoughts would be appreciated.
jtpe:
with regards to the run-off tabs, please refer to fema 353, 4.2.
the 5/16" fillet is the reinforcing fillet weld noted in d1.1, figure 3.4 (tc-u4a-gf), note 7.
i recommend getting your hands on copies of fema 350 - 353.

2009-09-09, 11:42 AM	#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	field welded moment connections-ibc field welded moment connections-ibc could someone explain their understanding of the construction requirements of a field welded moment connection for a omf in seismic site class d between a beam flange and column flange? specifically, how are the welds supposed to be run out/ground off at their ends to eliminate stress risers. also, i have been told that the bottom backer bar has to be removed, the weld back gouged and a 5/16 fillet placed over the original weld. is this requirement only for a omf? only in class d? why is the bottom weld different then the top weld? any thoughts would be appreciated. jtpe: with regards to the run-off tabs, please refer to fema 353, 4.2. the 5/16" fillet is the reinforcing fillet weld noted in d1.1, figure 3.4 (tc-u4a-gf), note 7. i recommend getting your hands on copies of fema 350 - 353. __________________ 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]