Dik:
Yes, you can usually increase the size of a fillet weld by adding few more passes. You should obviously use compatible filler metal and welding process. You should know something about the existing materials to make that compatibility determination. Is the (a specific) weld the limiting...
I’ve always hired blind welders and welding supervisors, because I couldn’t trust them not to look at their work and finished products. They do complain a lot about burnt fingers as they try to feel for their work, but that’s a small price to pay when it comes to the potential of violating...
Jerry1423:
Why not a note like: “At a closure btwn. two runs of welds, use three or four equal (but slightly smaller) spaces (smaller pitch lengths) and the same prescribed length of weld for the final few closure welds.” Good welders will almost always make their welds slightly larger than...
Gvot:
The fillet welds btwn. a stl. col. and a base pl. are really not intended to be the primary vert./col. load transfer mechanism. They do take moments, shears, and of course, some of the compressive load too. Within the fab. and erection tolerances columns are intended to transfer their...
Norby_acn:
I have seen some specialty tees which do have a tapered web (stem), but I don’t think this is one of them. That ST 5x17.5 is cut from a std. beam, an S 10x35; and it does not have a web which changes thickness. It does have flgs. which taper to about ¼ or 5/16” at their tips and...
MintJulep:
I thought you meant stresses caused by the welding, but now I think you might actually mean the stresses in the weld, or welds, due to the various loads. I can certainly imagine a situation like you are describing, but would need a lot more details to really comment more...
MintJulep:
Your last para., “It is possible that there were welding stresses imparted that were just under yield. And that loads applied during shipping pushed things beyond yield.” may be true in a few cases, but generally it is completely bass-acwards. There is yielded material around all...
Althalus:
Weldstan is right on the money. You always get some distortion from welding. If you put a flange plate down and weld a vert. standing web to it, fillet welds both sides of the web to the flange, making a ‘tee’ section, the entire section will end up cambered upward, touching the...
SSergey:
You have asked the right question for your particular cross sectional detail, but your detail is really a poor detail for your particular application. Put dimensions, thicknesses, member lengths, min. backspan length on outer member, loads and other pertinent engineering detail info on...
SiggiN:
The previous three posts are really good and informative posts, if you read them thoroughly, carefully, maybe between the lines a bit. Desertfox’s two refs. are very good also. They are mostly just good common sense, engineering thinking and reasoning to solve a problem. You probably...
Jsu0512:
You have .25kN (56lbs.) of lateral loading out near the head of the screw, applied through the .25” bracket pl. The screw hole in that bracket pl. should be pre-drilled slightly oversized, so that the screw can not bottom out btwn. the screw head and any thread that it has made in that...
JReck:
I would insist on the precaster verifying the thickness conditions, so you know what you are designing around. I would go by the detail until told otherwise, (or just guess at everything?). I would also want him to locate all of the vert. rebars, so I can miss them too, as much as...
JAE:
Both the base metal and the welding material MTR’s will show some min. yield and tensile strengths, and the actual value can vary above that level, and be within spec. I would talk with the welding rod supplier to see if they can’t fine tune their values for you. Alternatively, what does...
The1falconer:
Pay particular attention to people and equipment traffic and how this curb might be abused and damaged by any activities near it. At this stage, I think the angle iron idea will probably work best. Put the horiz. leg, with anchors, on the conc. slab to the inside to minimize...
PhamENG:
You must be boiling one hell of a bunch of water, fairly quickly…, making a lot of steam. And, that is your cooling mechanism, your heat dissipating mechanism. But, of course, the steel pl. and baffles are acting as heat transfer medium/materials, with large differences in temp...
Tmoose:
Gtaw and PhamENG are right on the money. Now, if the shop is working under a serious structural environment with serious inspections, the difference becomes even greater. There is the weld layout time and inspection time. The welds are invariably laid out a little longer so there is...
Bduff:
Like 3DDave, I don’t understand why you need a countersink detail for a ¾” bolt on a hole in a ¾” pl. either. You could probably do what you are trying to do, if you heated the plate sufficiently and provided some forming pressure on the edge of the pl. in the immediate area of the hole...
Mr168:
Why not braze the hole full, or some such, then drill it open again to the right dia. Why not drill it open to a slightly larger dia. and use a larger screw for your new fixings. The only issue should be that you provide some bearing area (bearing dia.) for the screw near the faying...