Standards for design and calculation of steel- or aluminum-constructions

Hallo everybody,
I am a German welding engineer and writing to this newsgroup because I couldn't get any detailed information elsewhere on the internet. I am
looking for American standards (e.g. ASME, ANSI, AWS and so on) regarding design and calculation of steel or aluminum constructions. I wanna compare the European (EN) and German standards (DIN, FKM) and other international standard (IIW) with these American ones to see where the differences and common features of these standards are. I am very familiar with the European and German standards, though I try to understand the American also.
Could anybody help me please and write me some document numbers of standards or detailed information regarding these fields, especially design of steel constructions, such as cranes, bridges, girders and aluminum constructions, such as lightweight girders and safety equipment? I am especially interested in design and calculation of welding joints but also in rating and sizing of joining by transforming, such as clinch or rivet connections.
Thank you very much in advance.
Best regards.
Marcel Todtermuschke
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European
One difference, to start you off:
DIN uses throat thickness to determine fillet weld size. AWS uses the shortest leg length to determine fillet weld size
This would make a 10 mm fillet to DIN standard the same size as a 14 mm (equal legs) fillet to AWS size.
If you are dealing with drawings, be careful of what projection (first angle or third angle) is being used/specified.
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