4 ms·
It's really more a pipe than a tunnel, the whole pipe needs to be able to support the weight of the boat and all the water to the top of each step
by Taniwha 2y ago
It's really more a pipe than a tunnel, the whole pipe needs to be able to support the weight of the boat and all the water to the top of each step
- amelius 2y agoWhat is the difference between a pipe and a tunnel in this case?
- Taniwha 2y agoa tunnel is supporting some downward pressure above it while a pip is resisting an outwards pressure from inside - a brick/stone arch might work for downwards pressure, but will just come apart if pushed from the inside - unlike the illustration they'd more likely need some reinforced concrete structure to support the weight of the water/boat