AWS D1.2/D1.2M PDF

This code contains the requirements for fabricating and erecting welded aluminum structures. When this code is stipulated in the contract documents, conformance with all provisions of the code shall be required, except those provisions that the Engineer or contract documents specifically modifies or specifically exempts. 

Limitations. This code is not intended for specialized fabrication such as pressure vessels or pressure piping.

Alternate Requirements. Alternate requirements from those in this code shall be submitted to the Engineer for approval. These requirements shall be based on experience, experimental evidence, or engineering analyses, and shall consider materials, loads, and environment.