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no cap and base plate
i am designing a modular structure that will be assembled in the factory. its a small 15x20 box. typically, they weld all the steel directly to each other. i dont have a problem with welding filler beam webs directly to girder webs but...they weld the tube columns directly to the top flange of the beam below and the bottom flange of the beam above. is there any specific aisc requirement that requires base and cap plates? is there an analysis procedure to check bearing with no plates?
also, the structure needs to be designed to be lifted from lift points. any advice on that?
find a job or post a job opening
if special design considerations in asd chapter k are satisfied, i don't see a reason that cap/base plates have to be used.
asd section a4.2 specifies minimum load increases due to impact. building codes should have similar provisions.
cap plates and base plates are typically specified to:
1) spread the load out
and
2) to provide a bolted connection to fasten the column to the beams
if bolting is not required and you can satisfy bearing and web crippling requirements, then no cap plate or base plate is necessary.

2009-09-10, 04:26 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	no cap and base plate no cap and base plate i am designing a modular structure that will be assembled in the factory. its a small 15x20 box. typically, they weld all the steel directly to each other. i dont have a problem with welding filler beam webs directly to girder webs but...they weld the tube columns directly to the top flange of the beam below and the bottom flange of the beam above. is there any specific aisc requirement that requires base and cap plates? is there an analysis procedure to check bearing with no plates? also, the structure needs to be designed to be lifted from lift points. any advice on that? find a job or post a job opening if special design considerations in asd chapter k are satisfied, i don't see a reason that cap/base plates have to be used. asd section a4.2 specifies minimum load increases due to impact. building codes should have similar provisions. cap plates and base plates are typically specified to: 1) spread the load out and 2) to provide a bolted connection to fasten the column to the beams if bolting is not required and you can satisfy bearing and web crippling requirements, then no cap plate or base plate is necessary. __________________ 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]