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You're missing the biggest one - evacuation. The reason many tunnels are oversized is to allow walkways for people to evacuate using in an emergency. This drive
by tomarr 9y ago
You're missing the biggest one - evacuation. The reason many tunnels are oversized is to allow walkways for people to evacuate using in an emergency. This drives the size up a fair bit.
- ebalit 9y ago"- Need space for a level floor, conduits/tunnel infrastructure and evacuation walkways" Seems like you missed this part.