This template is within the scope of WikiProject Engineering, a collaborative effort to improve the coverage of engineering on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.
I just added Audio engineering and Security engineering to the template. I realize that these could both be considered non-engineering professions, especially audio which requires little formal training. However, they are commonly used job titles, and there are indeed some trained engineers with such titles. For example, an electrical engineer doing extensive sound signal processing is sometimes called an audio engineer. Mamyles (talk) 20:41, 26 March 2015 (UTC)
Hi Mamyles, I think any field of science which involves technical issues is known as engineering. Thanks for adding those two, we need to add more. I think major fields are just 4 or 5, but we have to add minor fields, we have to add more to have a complete list. Any article in Wiki which is titled "Engineering", should be added. If you don't think so, I'm curious to listen to your idea. Soroush90gh (talk) 21:11, 26 March 2015 (UTC)
I think that this template should represent the broad topic of engineering. Due to space it is inevitable that some sub-disciplines will be excluded. For example, there are dozens of engineering articles on List of engineering branches for "Biological engineering" alone. A "Biological engineering fields" template would likely be most appropriate to connect these, although I'm not opposed to moving it out of Chemical and adding a new "Biological" line to this template. (Note that I've also just added Fire protection engineering.)
Ultimately, this template should be improved in conjunction with List of engineering branches and Outline of engineering. New templates for every major discipline should be created to connect sub-disciplines. I unfortunately don't have time to do such extensive work now, but it's something to think about, and if anyone does have time please feel free. Mamyles (talk) 21:33, 26 March 2015 (UTC)