Is this an appropriate welding leg size?

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I have done some welding calculations and I have chosen to use a universal beam. The beam is 350 steel.This was a theoretical exercise.The calculations indicate a larger weld leg size than the flange size. Is this impractical or against any standards?See the attachment.Thanks. Attached Images
Reply:Looks like you are welding to a part of an undetermined wall. Since the beam location is 7mm, and the weld leg size only needs to exceed the minimum, 19mm looks a tad big to me.Last edited by shovelon; 10-22-2013 at 08:54 AM.Weld like a "WELDOR", not a wel-"DERR" MillerDynasty700DX,Dynasty350DX4ea,Dynasty200DX,Li  ncolnSW200-2ea.,MillerMatic350P,MillerMatic200w/spoolgun,MKCobraMig260,Lincoln SP-170T,PlasmaCam/Hypertherm1250,HFProTig2ea,MigMax1ea.
Reply:3/8" is a good bet. ^
Reply:What calcualtions did you use to get to 19mmExperience is something you get right after you need it
Reply:Is the minimum 7mm? why?
Reply:Originally Posted by Jerry_DIs the minimum 7mm? why?
Reply:I recently had a discussion with an Ironworker regarding weld throat and leg sizes, he claimed that as a general rule most structural fillet welds used to join standard wide flange beams (eg; W6 up to about W18) are 8 or 10mm legs, which makes a throat of either 11.3 or 14.4mm. I'd say that 19mm is a bit excessive. Impractical yes but not against any structural standards that I know of (Canadian CSA W47.1). Your mileage may vary!
Reply:Throat = .707 x leg for a equal leg fillet.Experience is something you get right after you need it
Reply:Help out us uninformed.  Is it regular practice to just weld top and bottom on beam to column joints?....not a fillet all around?   In this case, if there's no access to the beam's web, wouldn't gussets be called for rather then just putting heavier welds where you can see it?
Reply:Originally Posted by Jerry_DI have done some welding calculations and I have chosen to use a universal beam. The beam is 350 steel.This was a theoretical exercise.The calculations indicate a larger weld leg size than the flange size. Is this impractical or against any standards?See the attachment.Thanks.
Reply:Old sparks, sounds like you are not that uninformed.  There is so much information left out of the OP's question that it is impossible to answer it.  A lot depends on the filler material choosen.  Undermatching and or over matching the filler metal to the base metal also has a large influence on the joint design.  In general, once the size of the fillets required start to get larger than the flange thickness it becomes foolish to use fillets instead of just prepping the flange and using full penetration butt, corner, or tee joints.  No description of the item to which the I beam is welded is provided.  Additionally none of the loading details that joint needs to withstand are provided either.  Hence no good answer can be given.  That being said 19mm seems way too big.
Reply:I'm an Ironworker welder myself, currently working in the Alberta Oilsands construction industry. Then majority of the structural welds I'm making are 6mm or 8mm.JasonLincoln Idealarc 250 stick/tigThermal Dynamics Cutmaster 52Miller Bobcat 250Torchmate CNC tableThermal Arc Hefty 2Ironworkers Local 720
Reply:I'm sure I saw a formula for that someplace.