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Is Our Infrastructure Ready For Rising Temperatures?
Hugh Pickens writes "Megan Garber writes that last weekend, a US Airways flight taxiing for takeoff from Washington's Reagan National Airport got stuck on the tarmac for three hours because the tarmac had softened from the heat, and the plane had created — and then sunk into — a groove from which it couldn't, at first, be removed. So what makes an asphalt tarmac, the foundation of our mighty air network, turn to sponge? The answer is that our most common airport surface might not be fully suited to its new, excessively heated environment. One of asphalt's main selling points is precisely the fact that, because of its pitchy components, it's not quite solid: It's 'viscoelastic,' which makes it an ideal surface for the airport environment. As a solid, asphalt is sturdy; as a substance that can be made from — and transitioned back to — liquid, it's relatively easy to work with. And, crucially, it makes for runway repair work that is relatively efficient. But those selling points can also be asphalt's Achilles heel. Viscoelasticity means that the asphalt is always capable of liquefying. The problem, for National Airport's tarmac and the passengers who were stuck on it, was that this weekend's 100+-degree temperatures were a little less room temperature-like than they'd normally be, making the asphalt a little less solid that it would normally be. 'As ironic and as funny as the imgur seen round the world is, it may also be a hint at what's in store for us in a future of weirding weather. An aircraft sinking augurs the new challenges we'll face as temperatures keep rising.'"
Lots of bus stops where buses are expected to sit for a while are paved with concrete because of this problem. When it's really hot out, buses sink into asphalt.
Our infrastructure was built 40 years ago and had a 25 year life expectancy. Every day that things dont simply fall apart is a blessing. Since apparently putting people to work rebuilding and improving things would be socialsim, so I guess there's nothing we can do about it.
"Have you ever thought about just turning off the TV, sitting down with your kids, and hitting them?"
This is news to us in Dallas. Our international airport has been fine for many, many days of 105+ temperatures.
Clearly this is a case of poor engineering and substandard materials, not 'hot environment destroying asphalt'.
If sharing a song makes you a pirate, what do I have to share to be a ninja?
The civil engineers around here are replacing any culvert that needs it with the bigger size, so that the increased run-off can be handled without washing out the roads. They assume 500 year events are now 100 year events and 100 year events are 30. 10 year events can happen at any time. Makes sense to me.
Stand back! This weather has the weirding way!
There is a reason that the area around the terminal is made of concrete and there are concrete pads placed at spots where airplanes sit. It is to allow them to stay in one place without sinking. While heat will hasten the effect, a fully loaded large airplane will sink into any tarmac. I ride motorcycles and on hot days my kick stand can dig through most tarmac quite easilly(I carry a small metal plate to spread the load on hot days).
The idea is to keep moving so one does not sink. Whoever let the heavy aircraft sit on tarmac instead of concrete is to blame for the issue and not the heat. Even on an average day for July I bet the aircraft would have sunk to some degree in three hours.
The solution to this problem is to not stand for more than a few minutes on tarmac. If the delay is longer, return to the gate or wait on a piece of concrete.
Damnit, even the worst fearmongers tell us that temperatures will rise by 1 degree per 20 years. Even ignoring the fact that this kind of temperature rise is insignificant in terms of what we're talking about, that's decades or centuries to replace infrastructure.
Instead of worrying about asphalt on streets, I'm worring about brains already having melted in one-too-many climate change activists demonstration.
Get a clue.
"Temperatures will rise by an average of 1 degree" does not imply that temperatures will be ~1 degree higher each and every day. Quite the contrary, climatologists predict that the weather (including temperature) will be MUCH more volatile. That means you will have many days where the temp is >15 degrees above normal, in additional to crazier winter weather etc.
Basically, because the size of weather fluctuations are expected to increase, you will get more days of crazy temperatures that will take a toll on infrastructure.
Sky Harbor (Phoenix airport) doesn't use asphalt runways for precisely this reason: archaeologists would be digging the bones of widebodied aircraft out of the tarpit centuries from now.
FWIW, the record temperature at Sky Harbor was 50C. They had to shut down the airport until it cooled off because the standard tables for flap settings didn't go that high. Now they do.
Lacking <sarcasm> tags,
Yesterday, CDOT closed US-24, about the fourth most important highway in Colorado, due to ice 100 ft. down that melted for the first time (since a railroad tunnel was constructed a century ago) and created a sinkhole.
Here in Chicago, we have a bigger swing than that by about 15 deg F. We've gone from less than -10 deg to 105 deg.
I swear, sometimes on the same day. Two weeks ago, we had very nearly a 50 degree swing in the course of 30 hours.
Last week, when we were over 100 all week long, there were pavement buckles all over the expressways. Thing is, we can make infrastructure that will last, but it means making it a priority higher than building an embassy in Iraq bigger than the Vatican.
You are welcome on my lawn.
World temperatures increased by a fraction of a degree but here we go, now airports are melting because of it. What an idiot conclusion telling me a lot of the mental state of the author.
In reality, the aircraft has been in the same spot for far too long. Additionally the consistency of the tarmac material might be sub-standard causing the melting point to be lower. I have seen roads here in New Zealand that had substandard tarmac on them turning to liquid in the hot sun. And New Zealand average temperate is actually dropping over the last decade.
this has nothing to do with global warming and everything to do with the expansion of the federal government.
Also, Drudge is reporting that the airplane was discovered to be a closet liberal, faking the whole thing to boost the whole fake AGW thing.
Sheesh, evil *and* a jerk. -- Jade
George Carlin had his own unique view on the 'save the earth' issue. God, I miss that guy! .....g, pale -blue-dot, perspective, plastic “We’re so self-important. Everybody’s going to save something now. “Save the trees, save the bees, save the whales, save those snails.” And the greatest arrogance of all: save the planet. Save the planet, we don’t even know how to take care of ourselves yet. I’m tired of this shit. I’m tired of f-ing Earth Day. I’m tired of these self-righteous environmentalists, these white, bourgeois liberals who think the only thing wrong with this country is that there aren’t enough bicycle paths. People trying to make the world safe for Volvos. Besides, environmentalists don’t give a shit about the planet. Not in the abstract they don’t. You know what they’re interested in? A clean place to live. Their own habitat. They’re worried that some day in the future they might be personally inconvenienced. Narrow, unenlightened self-interest doesn’t impress me. The planet has been through a lot worse than us. Been through earthquakes, volcanoes, plate tectonics, continental drift, solar flares, sun spots, magnetic storms, the magnetic reversal of the poles hundreds of thousands of years of bombardment by comets and asteroids and meteors, worldwide floods, tidal waves, worldwide fires, erosion, cosmic rays, recurring ice ages And we think some plastic bags and some aluminum cans are going to make a difference? The planet isn’t going anywhere. WE are! We’re going away. Pack your shit, folks. We’re going away. And we won’t leave much of a trace, either. Maybe a little Styrofoam The planet’ll be here and we’ll be long gone. Just another failed mutation. Just another closed-end biological mistake. An evolutionary cul-de-sac. The planet’ll shake us off like a bad case of fleas. The planet will be here for a long, long, LONG time after we’re gone, and it will heal itself, it will cleanse itself, ’cause that’s what it does. It’s a self-correcting system. The air and the water will recover, the earth will be renewed. And if it’s true that plastic is not degradable, well, the planet will simply incorporate plastic into a new paradigm: the earth plus plastic. The earth doesn’t share our prejudice toward plastic. Plastic came out of the earth. The earth probably sees plastic as just another one of its children. Could be the only reason the earth allowed us to be spawned from it in the first place. It wanted plastic for itself. Didn’t know how to make it. Needed us. Could be the answer to our age-old egocentric philosophical question, “Why are we here?” Plastic asshole.” George Carlin *** And here's a Youtube link of George... http://www.youtube.com/watch?nomobile=1&v=948Nm34arfA