Try this site below: you can find more free lite books at the casti site, if you have time to search for it. Once you find the free downloads, then save it to your files for easy reference.
http://www.casti.ca/books_ebooks/lite/section_VIII_lite.pdf
Good-luck over there.
The D1.1 and most other codes can be purchased from Global.ihs.com.
Global does all the AWS codes, as well as many others (ASME, API, etc.)
You can download them from their site.
In the meantime-if you have questions, let me know. I live with a number of AWS codes.
It is best to email me directly as I don't out on the Bulletin board as much as I would like.
I do check my email every evening.
Forward your pictures andquestions, I would be happy to help.
Good Luck
brande