How to Weld Bracket

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so i posted about my patio project (http://weldingweb.com/vbb/showthread.php?t=280471)i have a Q about welding a upper bracketthe steel columns will have a 3.5 x 12 x 24ft glulam sitting on top. i plan to use a big U bracket to hold glulam in place. however, i wanted to weld a short section of round tube/pipe to the bottom of the U and that round would fit into the hollow of the column giving me some rotational freedom so i can get easy alignment of the glulam. the OD of the round was to be about same size of the column hollow (2.5" OD because column is a 3x3 1/4" wall), however, when i weld round to bottom of the U the weld itself will hit the edges of the column when placed into the column. i wanted the flat of the U to rest on the edges of the column tube, etc. i was thinking of using a 1/4" thick ring "bearing" but not sure thats the easiest way.any suggestions?
Reply:Weld it on the inside not the outsidewww.georgesplasmacuttershop.comPlasma Cutter and Welder Sales and Repairs--Ebay storeTec.Mo. Dealer Consumables for the PT and IPT torch's
Reply:......or bevel the 2.5" OD, weld in the bevel groove, grind any excess flush.Blackbird
Reply:i cant weld the inside because the round will be like 12" long.but grinding a 45 angle and then welding that back to flush might work ok.ok, next Q. anyone have a mild steel tube/pipe spec that is 2.5"OD with 1/4" or 3/16" wall ?? i cant seem to find this.
Reply:Originally Posted by welding_kidi cant weld the inside because the round will be like 12" long.but grinding a 45 angle and then welding that back to flush might work ok.ok, next Q. anyone have a mild steel tube/pipe spec that is 2.5"OD with 1/4" or 3/16" wall ?? i cant seem to find this.
Reply:no weld. its held in place with grade-5 5/8" shoulder bolt.
Reply:Originally Posted by welding_kidanyone have a mild steel tube/pipe spec that is 2.5"OD with 1/4" or 3/16" wall ?? i cant seem to find this.
Reply:thanks for the links. IMS here in the west didnt list dom in this size. i need to call some other places to see if i can find it. materials availability where i am is not very abundant.and one last Q. i suspect getting a 2.5"OD tube inside of a 3x3x.25 EWS A500 tube will require some grinding relief work on the tube. anyone ever do this before, can tell me the troubles i will have.Last edited by welding_kid; 06-03-2013 at 09:45 AM.
Reply:Originally Posted by welding_kidand one last Q. i suspect getting a 2.5"OD tube inside of a 3x3x.25 EWS A500 tube will require some grinding relief work on the tube. anyone ever do this before, can tell me the troubles i will have.
Reply:the idea to have 2.5" OD is so that the saddle cant bend over through the Y axis (it fits snug, etc). there is no plate on top of column. the bottom of the saddle is 3.5" wide and the column is just 3", so it rests right on the top of the column. the steel used is way over engineered due to the live load requirements of town code. the design load including live load is ~500% more than dead load. ridiculous for a patio cover imho, but this is what the code says.black is the 3x3 columnpurple would be the round tubeorange is a U shaped bracket ~3.5w x 6h x 12land the bolt that holds it from lifting outLast edited by welding_kid; 06-03-2013 at 02:42 PM.
Reply:Bevel the incert for welding. Bevel the inside of the post to allow for weld. Done.Hope you keep everything square. Have fun drilling the bolt holes on a ladder through two different shaped tubes.leave drain holes at the bottom of your post.There are no problems. There are only solutions. It's your duty to determine the right one.Hobart Handler 210Airco 225 Amp MSM Stinger
Reply:the top of column is only 84". it will all be boxed and covered, so no water to be concerned about.it will be easy to drill. pilot each side, then drill for 5/8" bolt.not sure what you mean by bevel the inside of the 3x3 column.
Reply:what's not to understand? instead of beveling from the outside, bevel the inside. I\     /I instead of /I      I\There are no problems. There are only solutions. It's your duty to determine the right one.Hobart Handler 210Airco 225 Amp MSM Stinger
Reply:bevel the inside of the round tube, or inside of the square column? how does this help me?
Reply:inside of the square column. It clearences for the weld so that the weld doesn't interfear with the connection.Even if you bevel the round tube to allow the weld to suck in a little, you're still going to have some stickout with the weld. Not much, but enough that it won't sit flush on the top of the column. If you bevel the inside of the column you make room for the weld. and don't have as much clean up to do on the welded joint. leaving as much weld on the joint as possible and maintaining as much strength in the weld as possible.There are no problems. There are only solutions. It's your duty to determine the right one.Hobart Handler 210Airco 225 Amp MSM Stinger
Reply:10-4. thanks for all the info. things are progressing well on my project.