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That got me thinking. What if instead of tunnels, you dug channels in place of sidewalks and put grates along the top. Basically tunnels under the sidewalk exce
by learc83 12y ago
That got me thinking. What if instead of tunnels, you dug channels in place of sidewalks and put grates along the top. Basically tunnels under the sidewalk except you don't have to worry about the weight of earth or cars on top of the tunnel--just pedestrians. You do the digging much cheaper from the surface, and it wouldn't require ventilation.
- adrianN 12y agoDigging is still expensive and now you have people spitting on cyclists and raining dirt from their shoes and you prevent women from wearing skirts.
- learc83 12y agoExcellent points. OK so the grating is solid on the top with mesh on the sides for ventilation. It was just a half baked idea, and now that I think about it drainage would be a pretty big problem as well. If the drains got clogged it could turn into a death trap pretty fast in a heavy downpour.