funny@lemmus.org to Ask Lemmy@lemmy.world · 2 years agoWhy is such a tunnel needed?media.mas.toimagemessage-square130fedilinkarrow-up1756arrow-down146file-text
arrow-up1710arrow-down1imageWhy is such a tunnel needed?media.mas.tofunny@lemmus.org to Ask Lemmy@lemmy.world · 2 years agomessage-square130fedilinkfile-text
I found such a photo on the Internet and became interested in what function such a structure could perform.
minus-squaretryptaminev@feddit.delinkfedilinkarrow-up18·2 years agoCurved Tunnel ceilings are quite strong, as they distribute the pressure of the surrounding rock/soil quite well. So if it is covered with loads of rocks and soil it could probably hold another street passing over.
Curved Tunnel ceilings are quite strong, as they distribute the pressure of the surrounding rock/soil quite well. So if it is covered with loads of rocks and soil it could probably hold another street passing over.