Yahoo Answers is shutting down on May 4th, 2021 (Eastern Time) and beginning April 20th, 2021 (Eastern Time) the Yahoo Answers website will be in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.
Trending News
Why are the inside of some tunnels tiled?
There are at least 2 tunnels in Minnesota that have roads through them that have tiles on the walls and ceilings. Why are tiled
2 Answers
- 2 decades agoFavorite Answer
The tiles provide no structural support like in a bathroom they are pretty, easy to clean, and most immportantly protect the important structural components of the tunnel from exposure to the air, dirt and acid which are in abundance in a tunnel
Source(s): Geotechnical engineering handbook - 2 decades ago
Most likely it is just for decorative purposes.
The tiles would not add any structural support although they might be used as a very fancy version of a surface protectant (the standard is paint).
