On this meta post, we have a consensus that it would be useful to link to the Engineering SE on closed engineering questions.
It requires a proper wording approved by the community.
The current wording is this:
This question appears to be about engineering, which is the application of scientific knowledge to construct a solution to solve a specific problem. As such, it is off topic for this site, which deals with the science, whether theoretical or experimental, of how the natural world works. For more information, see this meta post.
(from @DanielSank 's reply)