What Version of AWS D1.1 Are You Actually Using?
If you've been around structural steel welding long enough, you know the code gets updated every couple years and nobody tells you when it matters versus when it doesn't. The current revision cycle for AWS D1.1 Structural Welding Code-Steel runs on roughly a three-year loop. The latest published edition is D1.1:2020, with Supplement 1:2021 addressing some clarifications. There's talk of a 2023 version floating through the committee, but as of my last check that hasn't landed in print yet. The American Welding Society sells their codes directly. You can grab a hard copy or a PDF license from aws.org. Third-party sellers on Amazon or eBay will have them too, but you're gambling on whether they included the latest supplement or just the base code. If your inspector asks for a specific version and you show up with the wrong one, that's a conversation you don't want to have on a jobsite. I ran into this exact problem back in 2022 on a municipal bridge project in Ohio. The spec called out D1.1:2020, but my welding procedure specification had been qualified under the 2015 edition. The difference wasn't dramatic, but there was a change in the impact testing requirements for certain steel grades at low temperatures, and the 2015 code had looser acceptance criteria on weld profile for certain joint configurations. My PWERs were technically still valid because the material and process hadn't changed, but the inspector wasn't buying that argument without a written justification. What I ended up doing was pulling the 2020 code, cross-referencing the specific sections that differed, and writing up a comparison memo that showed my procedures still met or exceeded the newer requirements. The engineer signed off on it. Took me about half a day of sitting with both books side by side.
Here's what most people miss about tracking these versions. The supplement numbers matter more than the base year sometimes. Supplement 1 to D1.1:2020 changed the allowable preheat requirements for certain HSLA steels. If you're only looking at the base code year and ignoring supplements, you could be running WPSs that aren't actually compliant with what the project spec requires. Another thing that trips people up: AWS D1.1 isn't the only code that matters. If you're doing piping, D1.1 doesn't cover it. That's D2.1 or B31.3 territory. I've seen guys pull the wrong book, weld up a whole run, and then get told it doesn't meet spec because they were following structural code on something that needed process piping code. The practical side of dealing with code versions on a daily basis is keeping a simple spreadsheet. Project name, required code version, my WPS numbers, and a notes column for any deviations or carve-outs the engineer approved. It sounds boring until someone asks you to prove compliance six months into a job and you have nothing to show. Having that documented saves you from scrambling. The cost of a current AWS code book runs somewhere around $120 to $180 depending on whether you go print or electronic. Cheaper than reworking welds.
