Comments by "" (@jasonreed7522) on "City Beautiful"
channel.
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Thats cool, 2 things i always wondered about for highspeed rail (or maglevs, or generally any fast train) is if Amtrak could build them along existing highway right of ways (its already reserved land for noisy transit with a wide footprint, i figure highway interchages pose the bigest obstacle for this idea, but it should be easier than having to get through residential NIMBYs)
And 2, can trains have premium services to have your car loaded on as cargo at the back to solve the last mile problem, admittedly more usefull for rural destinations where you get dropped off in car dependent small town america. (The place cars actually make sense, not NYC) For reference bibwas checking out Amtrak's website to see if i could take the train home for Christmas (laughably bad at 20hrs to have the track stop 3hrs from my hometown, i can drive it in 6-7hrs, and going to destinations that have stops a car is twice as fast and doesn't end in the middle of a car dependent city), anyway I found 1 line they operate between DC and Orlando that advertises a take your car with you service to bypass I-91 in comfort which sounds so much better, especially if it makes the same time or better.
Anyway i wonder what your end result was, i know college papers can end in unexpected results first hand. (I did a paper on how to handle nuclear waste, turns out the cheapest and best option is to find a filled in subduction trench and bury it 3km deep in clay in land bound for the mantle and in the time it takes to surface as lava its already decayed to nothing. Hardest part is convincing Seattle to let you put it in the cascadia subduction zone clay filled trench)
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As an EE i quick correction to your electricity efficiency.
Overall efficiency is multiplicative so for an EV it would be generation x transmission x charging x driving.
Electrical transmission is near perfect at 95% efficient (losses is resistance times current squared, higher voltage lowers current for same power, hence we use very high voltages).
Generation on the other hand sucks because of the laws of thermodynamics, specifically for the closed loop power cycle, the absolute best efficiency is based on the temperature of the hot source (how hot the fire is) and the temperature of the cold sink (how cold the air/river/lake is) and for practical plants it comes to about 35% for thermal power plants (coal, nat gas, nuclear, concentrated solar, ect).
The end result is the grid is basically 1/3 efficient overall in the US.
Other generation sources have different efficiencies or we don't really care. Like for hydro perfect efficiency is the flow rate and head drop but its also a river so the "fuel" is basically free. Likewise for wind, we care about individual turbine efficiency but at the end of the day wind is free fuel.
As we move away from thermal plants we will finally see the grid efficiency rise but for now 2/3 of the energy content of fossil fuels is lost to get to the outlet, mainly in the power plant itself because of unavoidable physics.
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@Techischannel you clearly know very little about such vessels.
Every ship has a characteristic called its draft, or bow deep into the water it sinks. (Like how 90% of an iceberg is underwater)
So heres a list of drafts of various vessels:
Cruise ship (Oasis class): 30ft6in (9.3m)
Aircraft carrier (Nimitz class): 37ft, won't enter less than 41ft of water
Frieghters:
-ULCV (biggest) : over 49.9ft
-great lakes: 29.5ft
My dad's 18ft long pleasure boat: 3ft
I couldn't find anything for a typical house boat.
Point it a skyscraper would be most comparable to a "floating city" like a cruise ship or aircraft carrier and you will notice that these vessels need over 30ft of water to start to float.
Using some basic physics and rough estimations (I'm going to use the Empire State building because its stats are easy to find): first its dimensions are 381m tall (roof) by 129.2m by 57m for a footprint area of 7,364.4m^2. its mass is 331,000,000kg which must be displaced by water to float (boyancy 101), the density of water is 997 kg/m^3. We must therefore displace about 331,996m^3 of water. Assuming the tower is a perfect prism and not its terraced shape, the water would need to be atleast 45.08m deep or 147ft deep. (From the base of the tower which is already above see level)
Using this as an estimate of the percentage of a buildings height that need to be under water as draft we get 45/381 = 11.8% for a perfectly rectangular empire state building.
Please tell me how a massive 10ft flood event is supposed to float a skyscraper with a 147ft draft? And this ignores how the building will immediately fall over into a much more stable position without massive rails.
It was a fair question to ask if we can make stuff float, but basic physics and math says that the dense core of a city will never float. Low density houses cam float but this introduces a lot of other problems like utilities connections, not getting washed out to see, landing back on your foundation, having the building handle wave action and not spring any leaks. Louisiana has decided to instead build houses on stilts above the expected flood level.
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I'm from Canton NY its pop is 6,500, and its the standard town size in the area, the legal cities are 10,600 (Ogdensburg), and 12,100 (Massena) the closest real cities are either Canada's Montreal and Ontario (both around 2+hrs driving) or Syracuse NY at 3hrs south. The Closest interstate was well over an hour away in Watertown.
And that is Paradise to me. I can't even comprehend how anyone could want to live in a real city like NYC which is at the opposite end of the spectrum from my corner of the state.
Our county started a bussing program a while back (inter town is the only thing that makes sense, and helping the college kids get around the towns but i believe the colleges pay for that privilege on behalf of the students). I sat through a town board meeting once (for school) and one of the issues discussed was about the Amish bringing to many chickens on the bus.
Also anyone who bitches about bikers being a hazard on the road can shut it until they come drive in Amish country and almost kill themselves, the Amish family, and the horse because the Amish refuse to put any reflectors on solid black buggys and drive at night in the rain, my dad drives school bus and dreads the day a bus-buggy accident kills a bus of children which is what it will take to enforce that basic safety to use the roads. (Religious exemption has to stop at endangering the welfare of others)
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