You're looking for a comprehensive write-up on the AWS D1.41 PDF!
AWS D1.4/D1.4M:2016 is a standard published by the American Welding Society (AWS) that outlines the requirements for welding and inspection of welded joints in steel structures. Here's a solid write-up:
If you need a full PDF copy, I recommend purchasing it from the American Welding Society (AWS) website or other authorized distributors.