[dead]
Europe’s Longest Bicycling Tunnel Opens in Norway
31–40 of 250 posts
Re: Europe’s Longest Bicycling Tunnel Opens in Norway
#32The best thing about pedestrian/cycling bridges and tunnels is that they cost soooo much less money to build since they have so much laxer requirements. The reason why we still have roman bridges standing is because the stress contribution of a human walking on it is basically zero. But start bringing in cars and trucks and see it crumble in a week
"because the stress contribution of a human walking on it is basically zero."
If that would be the case, armys would still march on bridges. But they don't.
Re: Europe’s Longest Bicycling Tunnel Opens in Norway
#33Earlier quoted context omitted.
[flagged]
I'm a Notjustbikes superfan and love my bike, but container ships are a marvel of efficiency and emissions per kg per km are probably better for the ship. cyclist: 21g CO2 per km lifecycle - https://ecf.com/news-and-events/news/how-much-co2-does-cycli... Say I can manage 100kg on a cargo bike, that puts us at 210mg CO2 per km per kg. Container ship: 16g CO2 per tonne per km - https://8billiontrees.com/carbon-offsets-…
This calculation doesn't quite work because the human's food emissions also come from stuff like transport in that supply chain.
The basic grow food -> (feed to animal ->) eat food cycle is CO2 neutral by itself. You can feed a human in a carbon-neutral way.
Re: Europe’s Longest Bicycling Tunnel Opens in Norway
#34Why can't we support and encourage cycling without vilifying cars in these threads? I've seen plenty of places that do both very well, like Spain. Everybody has a car and bicycle (at least one) and uses whatever fits the purpose at the time. I get it, when there's not cycling infrastructure everybody is forced to take the car even if it doesn't make any sense, like for short trips, good weather, single passenger, no…
I think it might be an American thing - at least the polarization part.
Over here in Poland some of my friends and relatives switched to scooters(125cc typically) when fuel prices spiked and are largely happy with the result - especially this one guy who used to daily a Nissan Pathfinder. Of course this becomes difficult in winter and inclement weather conditions, but I also see fewer cyclists then.
People need to realize that even the Dutch generally have cars and drive. It all works because they thought and fought hard to get to this point.
Re: Europe’s Longest Bicycling Tunnel Opens in Norway
#35Earlier quoted context omitted.
[flagged]
I'm a Notjustbikes superfan and love my bike, but container ships are a marvel of efficiency and emissions per kg per km are probably better for the ship. cyclist: 21g CO2 per km lifecycle - https://ecf.com/news-and-events/news/how-much-co2-does-cycli... Say I can manage 100kg on a cargo bike, that puts us at 210mg CO2 per km per kg. Container ship: 16g CO2 per tonne per km - https://8billiontrees.com/carbon-offsets-…
Well yeah, if container ships wouldn't be as horribly efficient, manufacturing everything in China, or shipping various stages of garments halfway around the world, which leads to the finished product having traveled more than those that have worked on it will in their lifetime, wouldn't be possible. The problem with container ships is not just the CO2, but also that they burn the worst of the worst fuel (https://en.wikipedia.org/wiki/Fuel_oil#Environmental_issues).
Re: Europe’s Longest Bicycling Tunnel Opens in Norway
#36The best thing about pedestrian/cycling bridges and tunnels is that they cost soooo much less money to build since they have so much laxer requirements. The reason why we still have roman bridges standing is because the stress contribution of a human walking on it is basically zero. But start bringing in cars and trucks and see it crumble in a week
[flagged]
Not sure if you’re aware but this bikes vs trucks thing is a strawman.
Nobody has ever suggested that things that require trucking should be done by bike.
Re: Europe’s Longest Bicycling Tunnel Opens in Norway
#37Why can't we support and encourage cycling without vilifying cars in these threads? I've seen plenty of places that do both very well, like Spain. Everybody has a car and bicycle (at least one) and uses whatever fits the purpose at the time. I get it, when there's not cycling infrastructure everybody is forced to take the car even if it doesn't make any sense, like for short trips, good weather, single passenger, no…
'Everybody has a car and bicycle...'
I'm not sure this is true, but, on the wider point of cars v cycles it comes down to the usual problem of neither not wanting to share the same space. I have lived in Spain, though mainly live in the UK, and in either place I would not feel safe riding a bike (or scooter) on a public road.
I should add that car drivers and bike riders can be as bad as each other, it's just that car drivers usually have the upper hand in terms of protection.
Re: Europe’s Longest Bicycling Tunnel Opens in Norway
#38The best thing about pedestrian/cycling bridges and tunnels is that they cost soooo much less money to build since they have so much laxer requirements. The reason why we still have roman bridges standing is because the stress contribution of a human walking on it is basically zero. But start bringing in cars and trucks and see it crumble in a week
Eh, not exactly. Pedestrians are heavier than cars in terms of pounds per square foot. Bridges are designed for extreme loads, including pessimistic pattern loading, and the requirements for pedestrian bridges aren’t any less safety critical. (edit: I designed this bridge: https://www.google.com/maps/@47.597616,-122.3297804,3a,75y,7... )
there's more to it than just pounds per square foot. speed over the bridge matters too, which is why you get speed restrictions on some bridges
Re: Europe’s Longest Bicycling Tunnel Opens in Norway
#39The best thing about pedestrian/cycling bridges and tunnels is that they cost soooo much less money to build since they have so much laxer requirements. The reason why we still have roman bridges standing is because the stress contribution of a human walking on it is basically zero. But start bringing in cars and trucks and see it crumble in a week
Tell that to the engineers of the Millennium Bridge in London. Resonance from foot traffic caused it to start swaying, requiring shoring up with massive dampers.
Re: Europe’s Longest Bicycling Tunnel Opens in Norway
#40It's the escape tunnel for a tram tunnel with an extra coat of paint: https://www.lifeinnorway.net/bergen-cycle-tunnel/
Strange, I have never heard of a separate escape tunnel for a tram tunnel. Even German U-Bahn/S-Bahn (which I am most familiar with) tunnels usually just have a walkway beside the tracks that leads to the next station or emergency exit. But I guess that also depends on length between possible stations/exits, or it's due to newer regulations, or maybe it was a "mixed calculation" ("if we build a separate tunnel, it's more expensive, but it can also be used as a bike/pedestrian tunnel").