quick welding symbols question

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Today in class we got a blueprint for a little in house skills competition. Iv been through the blueprinting course and have worked in a shop building off blueprints before school. Question to some of the more experienced guys though. There is a 3/4 fillet weld here and from my understanding a fillet weld is sized by the leg length correct? If so then this does not make sense considering the flat spot on top is only 1/2 so how could there be a 3/4 leg? Thoughts? Attached Images
Reply:Nope.The legs are the 2 short sides of a right triangle, so the face is the hypotenuse of the 2 legs. In your case the face(or hypotenuse) is 1.06"(or fractional 1 1/16th"). You achieve this with Pythagoreum theorem.To recap, the fillet weld is measured by leg size, which if you look at the symbol is the short vertical part of the weld triangle. The short horizontal leg is the second part of the weld triangle. The face or hypotenuse is the long side of the weld triangle.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:ok yes, I know exactly what your takling about .75 squared + .75 squared = face squared. Are you agreeing with me in the fact that is not possible to put a 3/4" leg size at the top where there is only 1/2" of material? Or am I misunderstanding you?
Reply:Originally Posted by mike7466ok yes, I know exactly what your takling about .75 squared + .75 squared = face squared. Are you agreeing with me in the fact that is not possible to put a 3/4" leg size at the top where there is only 1/2" of material? Or am I misunderstanding you?
Reply:Maybe I'm missing this since weld print reading isn't one of my strengths, but I'm not seeing any place where you only have 1/2" except at the very top. There I'd see the weld tapering off from 3/4" to the available material, and that would be a very small area.Correct me if I'm wrong..No government ever voluntarily reduces itself in size. Government programs, once launched, never disappear. Actually, a government bureau is the nearest thing to eternal life we'll ever see on this earth! Ronald Reagan
Reply:Originally Posted by DSWMaybe I'm missing this since weld print reading isn't one of my strengths, but I'm not seeing any place where you only have 1/2" except at the very top. There I'd see the weld tapering off from 3/4" to the available material, and that would be a very small area.Correct me if I'm wrong.
Reply:Originally Posted by shovelonYou are correct, but it should not stop you from trying.I have had plenty of arguments with inspectors on that same topic. Just make sure the other part of the leg is 3/4" if there is room.
Reply:Originally Posted by shovelonShoot, you are right. There is not a circle around the neck of the symbol, so there is no weld on the 1/2 inch flat.
Reply:Maybe they put that in there on purpose, to see who catches it.Thermal Arc 210 FabricatorHypertherm PM 45and lots of other tools the wife doesn't know about
Reply:Originally Posted by Rkott4Maybe they put that in there on purpose, to see who catches it.
Reply:mike7466From the partial frame of your print-image, it is obvious the weldsymbols in the top-view are in conflict with the front-view; and the front-view symbols are incongruous.So the pre-mentioned math and projections may be moot.On the fab-floor, when a prints is in conflict with itself, it is called a bust.  This is when you get to put the engineers [or teachers] on the spit, and rotate slowly.mike7466, please post the entire print for clarification.   To your credit for asking: this may be a weld specification/designflaw, and not a weld symbol interpretation issue.Opus
Reply:Originally Posted by OPUS FERROmike7466From the partial frame of your print-image, it is obvious the weldsymbols in the top-view are in conflict with the front-view; and the front-view symbols are incongruous.So the pre-mentioned math and projections may be moot.On the fab-floor, when a prints is in conflict with itself, it is called a bust.  This is when you get to put the engineers [or teachers] on the spit, and rotate slowly.mike7466, please post the entire print for clarification.   To your credit for asking: this may be a weld specification/designflaw, and not a weld symbol interpretation issue.Opus
Reply:shovelonA view of the entire print will answer mike's question; or present real questions.I agree the symbols read clear; but they are awkwardin the context of the entire piece, and are suspicious.Opus
Reply:I am getting confused .  The weld symbol with notation A is for a 3/4 fillet on the far side of the gusset.  The weld symbol with notation B calls for a 1/4 inch fillet on the near side of that fillet.  Weld symbol with notation C calls for a 1/2 inch fillet on both sides connecting to the base of the weldment.   Good practice calls for the weld at the toe of the gusset to be closed but there is no notation to say what size.It is unusual for a gusset to have different sized fillets but this is very common for welding competitons.  Often in the notations A,B, and C there will be a reference to weld vertically up or down.  this will provide the judges with information about the competitior being able to follow instructions as well as measuring his skill doing different procedures and positions.
Reply:No confusion. There is no weld symbol at the toe of the gusset, so there should be none. If good practices dictate a weld and you put one there, the inspector may make you grind it out.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:Originally Posted by shovelonNo confusion. There is no weld symbol at the toe of the gusset, so there should be none. If good practices dictate a weld and you put one there, the inspector may make you grind it out.