Earlier quoted context omitted.
Looks like a discourse.org one
Ahh discourse... such a good engine. Only matcher by nodebb
Thanks :)
Hoping to surpass one of these days.
What are those dents in I-90 outside Seattle?
131–137 of 137 posts
Re: What are those dents in I-90 outside Seattle?
#132Earlier quoted context omitted.
> People make the assumption that the roads aren’t designed with truck travel in mind methinks. Fatigue damage is the biggest problem. A heavy truck pushes down on the asphalt/concrete, flexing it. Eventually, it cracks and crumbles away. As mentioned elsewhere, fatigue damage goes up as the 4th power of the load. Railroad tracks are made of steel, and steel flexes nicely without crumbling away. If you stand next to…
The main issue, I think, is the entire economy would have to be changed on a massive, global scale. I had this job 20 ago delivering for one of the major grocery chains. Southern Nevada, New Mexico and Arizona were all covered out of a single warehouse in Phoenix. That place is a shitshow and that’s with them having a couple hundred docks to unload trucks, lucky to get out of there in seven hours. If they were unload…
It isn't necessary to revamp the entire economy. Things can be done one line at a time. All that's necessary is realigning cost and tax incentives so the costs reflect the actual cost (including externalities like pollution) rather than the grossly distorted subsidy system we currently have. The rest will take care of itself.
Re: What are those dents in I-90 outside Seattle?
#133Earlier quoted context omitted.
On mobile and no time to correct it myself, but I think there's a consistency mistake in that article: The retrofit begins with cutting of six slots (three in each wheel path) across all transverse joints or cracks. The slots are cut with ganged diamond saws that make six cuts in each wheel path.
The only other explanation I can think of is that the each slot is made with two cuts, each one starting at the crack and moving outward from it. So then the three slots in the wheel path takes six cuts to make (two cuts per slot, outward from the crack). (Or perhaps the opposite; maybe the cuts start away from the crack, and stop at the crack.) But yeah, also perfectly possible it's just an error in the article :)
Each slot takes two cuts indeed, but the cuts are parallel, one on each “side” of the slot.
Source: have cut concrete it sucks.
Re: What are those dents in I-90 outside Seattle?
#134Earlier quoted context omitted.
In Middle TN, at least, asphalt is coming back in favor. Apparently concrete doesn’t handle the freeze/thaw cycle very well, and is harder to repair than asphalt. In a side note, TN Department of Transportation recently experimented with a more porous asphalt variant on some major roadways, which was supposed to help with drainage. But in the winter, rain soaked deeper into the porous asphalt, causing much larger pot…
That’s porous asphalt, developed in the Netherlands and used on 90% of the roads here. It is fantastic when it’s raining and it gets damaged really quickly when it’s freezing. In our climate the benefits heavily outweigh the downsides and we just apply a new top layer very often (once every 1 - 5 years).
The potholes here were so big that it burst car tires and dented rims. The idea seems great, but not sure why it was so bad here.
Re: What are those dents in I-90 outside Seattle?
#135Earlier quoted context omitted.
The USA has possibly the best freight rail system in the world and it’s used extensively. Trucks pay a ton of tolls, licenses, and fuel tax.
In what sense does the US have the best freight rail system in the world? Not trying to be antagonistic, here---just want to know why you think this. Regarding your other comment ("trucks get the goods where they have to go"): in other countries, such as Switzerland, many buildings (think an Ikea store) are required to be reachable by rail, in which case regional trains can deliver goods to a hub, and then local trai…
The absolute amount of freight moved by rail in the US is insane. But the US is also roughly the size of Europe and is shaped so there are many population centers far from the ocean.
If you remove bulk freight it’s quite a bit of a difference but still massive.
Much of European freight goes by boat and truck without much train.
Re: What are those dents in I-90 outside Seattle?
#136Earlier quoted context omitted.
In what sense does the US have the best freight rail system in the world? Not trying to be antagonistic, here---just want to know why you think this. Regarding your other comment ("trucks get the goods where they have to go"): in other countries, such as Switzerland, many buildings (think an Ikea store) are required to be reachable by rail, in which case regional trains can deliver goods to a hub, and then local trai…
The absolute amount of freight moved by rail in the US is insane. But the US is also roughly the size of Europe and is shaped so there are many population centers far from the ocean. If you remove bulk freight it’s quite a bit of a difference but still massive. Much of European freight goes by boat and truck without much train.
I don't see how that relates to the US freight system being the best.
Re: What are those dents in I-90 outside Seattle?
#137Earlier quoted context omitted.
The only other explanation I can think of is that the each slot is made with two cuts, each one starting at the crack and moving outward from it. So then the three slots in the wheel path takes six cuts to make (two cuts per slot, outward from the crack). (Or perhaps the opposite; maybe the cuts start away from the crack, and stop at the crack.) But yeah, also perfectly possible it's just an error in the article :)
Each slot takes two cuts indeed, but the cuts are parallel, one on each “side” of the slot. Source: have cut concrete it sucks.
Neat, thanks!