On Sun, 25 Feb 2018 14:26:54 +0100, Manuel Haible wrote:
This requires some calculation regarding structural
analysis
Unless you are living in a banana republic
- you need to hire a structural engineer
- you need to get a construction permit
In advanced civilisations it's not simply done by reading a few books
and/or Wikies and using a piece of jotting paper + a calculator.