Built up beam+channel & brace connection
Built up beam+channel & brace connection
(OP)
Hi All,
Detailing a job right now with W18x35 and W16x36 with cap channel C8x11.5. Some bays have vertical bracing ranging from 45 to 20 kips and I was wondering if the C8x11.5 cap channels should be notch to allow the brace gusset plate to be welded directly to beam top flange ends or weld the gusset plate to C8 and weld continuous the channel ends for the length of the gusset plates.
Thanks in advance.
Detailing a job right now with W18x35 and W16x36 with cap channel C8x11.5. Some bays have vertical bracing ranging from 45 to 20 kips and I was wondering if the C8x11.5 cap channels should be notch to allow the brace gusset plate to be welded directly to beam top flange ends or weld the gusset plate to C8 and weld continuous the channel ends for the length of the gusset plates.
Thanks in advance.






RE: Built up beam+channel & brace connection
RE: Built up beam+channel & brace connection
It's basically a channel welded to beam similar to crane beam with a typical brace gusset plate on the beam ends. Just wondering if it's typical to notch the channel around the gusset plate or weld the gusset plate directly on top of the channel.
Thanks.
RE: Built up beam+channel & brace connection
I'm guessing that the channel is there to help the beams' deflection (moment) more than the shear capacity of the beam. So connecting the brace to the channel is more a headache than anything else, since then, you'd have to ensure that the load from the brace goes into the channel, and then goes completely into the beam and its connection.
RE: Built up beam+channel & brace connection
Thanks.
RE: Built up beam+channel & brace connection
RE: Built up beam+channel & brace connection
RE: Built up beam+channel & brace connection
RE: Built up beam+channel & brace connection
RE: Built up beam+channel & brace connection
RE: Built up beam+channel & brace connection
RE: Built up beam+channel & brace connection
to ensure the load path is not compromised? Can you terminate the channel at the gusset? This would save some detail / fabrication work if it can be done and the load path or integrety of the beam are not compromised.
RE: Built up beam+channel & brace connection
Cut the channel back as far as possible along the beam, and get it the heck out of this connection design. If for whatever reason it was "needed" up at the column face, swap it for a flat cap plate or diamond back that you can actually include in the detail without having to be crazy with the coping, cutting and welding. Your owner will thank you whan he/she/it/(trying not to judge and be inclusive here) gets the bill.
RE: Built up beam+channel & brace connection
Michael.
"Science adjusts its views based on what's observed. Faith is the denial of observation so that belief can be preserved." ~ Tim Minchin