A number of years back, we bounced on landing. The chief steward gets on the PA system "Sorry about that folks, it's wasn't the captain's fault, it wasn't the airplane's fault, it was the asphalt".

I really appreciate this type of videos talking about topics directly related to aviation and commonly unknown. Thanks for the video!

"Runways represent the beginning and end of our time in the air on any given flight" Air canada: "Hold my taxiway"

@harrisonofcolorado8886

2 жыл бұрын

I get it! Kind of.

@chrislohphotography

2 жыл бұрын

😂

@KyoushaPumpItUp

2 жыл бұрын

@Uzbek Flyer it's a reference to an air canada flight about to land on a taxiway instead of the runway. On the taxiway, three planes wrre queued for take off. The landing was aborted. The reason for that was the pilots were already fatigued and it affected their judgement. It happened in 2017.

@KyoushaPumpItUp

2 жыл бұрын

@Uzbek Flyer look up air canada flight 759.

@KerrijaGryphon

2 жыл бұрын

Harrison Ford likes this.

I have been lucky enough to be kn a paving crew that just wrapped up 28l 10r at SFO, and it was amazing to see what goes into paving a runway. One thing you forgot to mention is that asphalt is nearly 100% recyclable whereas concrete can only have up to ~40% recycled concrete.

We hope you enjoyed this video, please be sure to subscribe for daily videos just like this!

According to news media, EVERYTHING at an airport is "tarmac." Runways, taxiways, ramps...parking lots, access roads, jet bridges, control towers, seating areas, bathrooms...

@chrislohphotography

2 жыл бұрын

😂

@AaronMcHale

2 жыл бұрын

Gotta pea, just going to find the tarmac 😂

@baylinkdashyt

2 жыл бұрын

At least they're not calling it macadam.

Finally! As a civil engineer myself, I'm happy to aviation channels talking about civil engineering aspects of the industry

Landing at Shinyanga, Tanzania en route from Dar es Salaam to Mwanza in a Precision Air ATR back in 2005 was a helluva experience!!! Gravel runway.

My CFII and I were literally just talking about this yesterday…perfect timing!

@sarveshmuttepawar1675

2 жыл бұрын

Man me to😂😂

I've been waiting to find this out for so long!

You didn't mention the difference of grip the tyres have in different weather conditions, as any motorcyclist or cyclist will tell you when it's wet there is NO grip on concrete at all with tyres easily slipping or locking up under breaking while asphalt does retain alot of grip in wet weather.

@mirufe1

2 жыл бұрын

Grooved portland cement concrete can give grip when BRAKING* in the wet.

@mrgothicman

2 жыл бұрын

@@mirufe1 so my phone auto corrects & you feel you have to ride in & correct me? Exciting life you must have.

@mirufe1

2 жыл бұрын

@@mrgothicman Yes. Yes I do.

Thanks for the MSFS 2020 help!

I've never actually been there but Mountain Valley Airport (L94) in Tehachapi, CA has a rather unusual runway surface. The first 1200 feet of each runway is dirt, but the remaining 3690 feet is asphalt. I have no idea why they built it that way.

@PrograError

2 жыл бұрын

maybe for better grip? tho in rain... good luck...

I am an Aviation Management lecturer and have taught Airport Ops as a course where we cover Pavement Management and above video topic too, hence this is really interesting!

Well, as Practical Engineering's Grady Hillhouse would point out, that's "Asphalt Concrete" or "Cement Concrete" -- both are "concretes".

@dasmellyyooper

2 жыл бұрын

He's got concrete information

@mirufe1

2 жыл бұрын

Portland Cement Concrete and Asphaltic Cement Concrete.

@deus_ex_machina_

2 жыл бұрын

As a fellow Practical Engineering subscriber, that is a level of jargon only a civil engineer could appreciate. Let the lay people call what they want, as long as there isn't any confusion.

@baylinkdashyt

2 жыл бұрын

@@deus_ex_machina_ sure. But I didn't realize it was actually asphalt concrete myself until Grady said so. We laid a bunch of permeable Concrete in our front yard around the edges of the driveway, following his instructions. 3 years old now and it's working out just fine.

@mirufe1

2 жыл бұрын

@@deus_ex_machina_ Being a professional engineer with a degree in civil engineering that had multiple undergrad construction materials classes, a graduate class in concrete technology, and worked out at the engineering research center on a graduate project on the effects of levels of fly ash concentration in portland cement concrete, I kind of lose my mind when someone goes "look, there goes a cement truck."

“Runways represent the beginning and end of our time in the air on any given flight.” Laughs in helicopter landing in dirt.

I didn’t know about that actually. I also found it interesting to learn about the beach runway in Scotland.

In my country (Argentina) most flying schools have grass runways. I learned to fly in one of them, IT is a nice experience

This is interesting 👍

"Because it doesn't use petroleum byproducts, concrete is more environmentally friendly than asphalt" That doesn't take into account the considerable emissions released when concrete 'cures'. In fact, concrete construction is a major contributor to global warming.

Taking off in rural Australia in the rain is um fun for pilots apparently. It's just red dust and gravel so it turns to mud. Add in that it's really hot and windy. I can't wait for my seaplane trip. That will be a cool runway.

Hot climates concrete, moderate climate asphalt, my observation.

@KanyeTheGayFish69

2 жыл бұрын

What about cold climates?

@jeffreyanderson1851

2 жыл бұрын

Ice

@jeffreyanderson1851

2 жыл бұрын

With grooves of course

Yes, I was aware. I did my flight training between 2007 and 2009 (abandoned at 80h). In that experience, I used an asphalt runway. On one occasion, I did 2 touch and goes on an unsurfaced runway.

I’ve flown in a Twin Otter out of grass runways in Central Africa. Different experience but fun.

The media be like: "What about tArmaC?"

@MrFiskerN

2 жыл бұрын

Omg I was about to say!

@tae5216

2 жыл бұрын

Mac n cheese aggregate with tar binder

Please make something about sloped runways.

Someday there is going to be glass runways. Not glass as in windows, glass as in SolarCity roofing tiles.

@polishavgeek1849

2 жыл бұрын

Emirates 22 Heavy cleared to la... *crash*

@PrograError

2 жыл бұрын

i highly doubt it... maybe for the sides of it... but any breakage of the glass is literal Concorde waiting to happen...

Just commenting for KZread algorithm

Around 1998 I flew in to Chicago Midway in the winter just after a snowstorm. It was extremely cold around -15C. As we got closer I could see out the window that the runway was covered in ice. Not black ice, but white ice. Aside from the fact that the runway was white everything seemed normal and if I was not looking out the window I would not have know the runway was covered in ice. The landing was not unusually hard or smooth, nor did I feel any skidding. I guess at those very cold temperatures the traction on ice would be as good as on asphalt or concrete.

PSP which is short for perforated/pierced steel planking and was also known as Marston Map was the common material used in WWII by the allies to construct temporary airfield. PSP but also saw service in Korean and Vietnam wars.

I fly around Camden YSCN, usually use the asphalt runway 06/24 but for ops such as short field and takeoff, I've used the grass 10/28. Definitely prefer asphalt.

My father, as an ALPA representative, was involved in investigating a Braniff DC-8 runway overrun in South America (LaPaz I think). He suspected hydroplaning, which would be shown by steam cleaned white streaks on a concrete runway. He was mulling this over and asked me what steam cleaned asphalt would look like.

As an hai stan I’m disappointed that this video isn’t about bricks

What about ditching in salty and fresh water?

I disagree with the statement that concrete is more environmentally friendly. The production of cement creates tremendous amounts of CO2 (and often mercury) emissions, while the petroleum in the asphalt is not burned and therefore does NOT become CO2.

And what engineering methods, no matter the material, are used to shed water (grooving and slope), reduce winter ice, enhance take offs (slope ramping) etc? Tell us more.

Hello, the asphalt is not worth it for use on the tarmac, because the planes keep digging in and when you have to Jack up the landing gear to change tires you get these rectangle divets from the the jack. At the gates, they have a bunch of sections that had to be replaced with squares of concrete where the asphalt had failed where the aircraft usually park. The other night we had a CRJ-200 that got stuck in the asphalt. I ended up jacking up both main gears to make sure the brakes weren't stuck somehow. I was checking the parking brake control valve, but it was just stuck in the asphalt from sitting overnight and it wasn't even that deep.

@phildavey3135

2 жыл бұрын

There’s a more fundamental reason than that for always using concrete and not asphalt on aircraft parking stands: fuel spillages. The hydrocarbons present in JET A1 fuel will attack the bitumen binder in asphalt, causing significant and ongoing issues. Planing off and regularly resurfacing parking stands would be a crazy and avoidable cost which no airport would ever entertain.

ORD Chicago airport actually has runways with a mix of both!

I like asphalt runways more, the black looks well with white. Unfortunately asphalt isn't good in heat and is not eco friendly.

@SearTrip

2 жыл бұрын

Asphalt is the most recycled material in the world, something not mentioned in the video. When you take into account the fact that the asphalt taken off an old runway is almost completely recyclable while old concrete is not, I wonder how their relative eco-friendliness stacks up?

@Likeusb1

2 жыл бұрын

@@SearTrip Using oil isn't eco friendly, but that might be true idk.

@benmol_

2 жыл бұрын

@@SearTrip and when you add the fact that concrete production is one of the biggest CO2 producers, the difference between the two might not be that important. I wonder if there is precise data

What type is the plane at the bottom right at 2:38 ? it seems like it has engines on top of the wing

@HCR_Motorhead

2 жыл бұрын

Either an An-72 or An-74

I don't think that Asphalt is less environbmentally friendly? It is almost infinitely re-cycable, and the carbon in it is not released to the atmosphere. On the contrary, the production of cement is extremely greenhouse-gas emitting.

"Runways represent the beginning and end of our time in the air on any given flight" I think you mean on any SUCCESSFUL flight

@PrograError

2 жыл бұрын

well... any landing you could walk away is a good flight... even if you get some unwanted attention...

Actually drink represents the beginning and end to all my flights these days unfortunately. Thanks Karen!!

1:54 'Concrete is more environmentally friendly'. That's inaccurate. Although asphalt is made of bitumen, a thick by-product of crude oil, that bitumen isn't burnt and doesn't contribute to global warming. Asphalt surfaces are arguably carbon neutral so long as the bitumen used is a by-product and doesn't motivate new extraction. Concrete on the other hand releases large amounts of CO2 due to the chemical process of manufacturing cement. According to Wikipedia the global production of cement accounts for some 7% of CO2 emissions. Alternative methods to produce concrete are being pursued but are not yet adopted.

can you do Bituminous material !

Why saudia stops Dhaka on hongkong flight

What is the difference between Concrete and Asphalt Runways? 737-200 with gravel kit: Where we're going we dont need roads.

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My Mrs had a Brazilian runway ;)

The British Airways retro livery is stunning

The creation of concrete, and baking of lime to make it does release a large amount of greenhouse gasses (mostly C02 i believe) into the atmosphere. I wouldnt be surprised if concrete runways are less common with the anti global warming fights. Especially with Asphalts recyclability.

So concrete is stronger, less susceptible to deformation in hot climates and more environmentally-friendly compared to asphalt, but concrete runways can crack, costs more and take longer to build. Which surfaces typically lasts longer? Which surface allows for longer intervals between maintenance?

Its generally stronger but also more prone to cracking....🤔🤔🤔🤔🤔

@umi3017

2 жыл бұрын

diamond are also prone to cracking... or maybe better described as shattering

Not just the runways but the entire airport movement area surface requires careful consideration of the required strength. Their are engineering companies specializing in this stuff

@PrograError

2 жыл бұрын

imagine the nightmare for those older airports... where the runways were originally made for bi-planes... and now for A380s...

This is I wanna know lol

@atishghosh

2 жыл бұрын

*what

As an ex builder, this sort of thing interests me but obviously I know the difference, otherwise I would've been rubbish at my job.

Grade to see uganda Airlines bird in the beginning of the video

Once landed on the longest runway in the world. Frazer Island's beachline.

I have seen a tartan runway.

Proper concrete also includes sand. I was always told 1 part cement 2 parts sand and 3 parts aggregate for basic concrete.

@PrograError

2 жыл бұрын

if not wrong that's part of the aggregate too... portland concrete need more sand than rocks iirc.

You should do better research before making broad statements like asphaltic concrete is more environmentally problematic than portland cement concrete. The making of portland cement is very fuel intensive and also requires a lot of mining. Replacing a portland cement concrete airstrip also creates a bunch of concrete waste and requires a huge amount of transportation of new materials and waste. Replacing an asphaltic concrete airstrip usually involves milling the old airstrip and combining the tailings with a small amount of fresh asphalt binder. There is almost no waste and little transportation involved. This is much less impactful than replacing a portland cement concrete airstrip. Additionally, waste items such as shredded tires can be added in with the milled asphalt concrete tailings in making the new refurbished airstrip thus removing the discarded tires from the waste stream as well.

What about bituminous?

Living in Chicago i learned: concrete alleys never get resurfaced while asphalt ones do.

How about a grass runway. Small airstrips often use this type of runway, or even just dirt runways in the outback. Another type is of-course water for flying boats!!

avgeeks : the civil aviation needs you to understand the differences between these two. News Channels : they both are the same. Also news channels : Tarmac!

In my rented Cessna 172, they are the same

background music please

What about paved runway?

I prefer concrete runways. They're durable, and the landings are usually pretty smooth.

@makisekurisu4674

2 жыл бұрын

He forgot to mention that concrete runways have a life expectancy of around 25 years and Ashphalt about 15 years. However, concrete doesn't provide as much traction as Ashphalt.

@ecclestonsangel

2 жыл бұрын

@@makisekurisu4674 seems to me it's six of one, half a dozen of the other. They both have their good and bad points. I thought they grooved the cocrete though, to make it easier for the planes to stop in bad weather?

@makisekurisu4674

2 жыл бұрын

@@ecclestonsangel Yes but even croved concrete will still get more slippery in rainy days but not Asphalt

Isn't asphalt recyclable? where as concrete isnt?

sad that water runways were ignored

You know, I don't think I've seen a asphalt road that isn't supported by concrete. So I'm pretty sure that asphalt pavements are more expensive than concrete ones in-general.

Since child I have a recurring dream of a cracked, square-tiled concrete runway exactly like 00:39. I'm walking over it's surface and the place is all empty and abandoned.

Concrete is not as environmental as most people put it as it takes huge amount on energy to produce it & that energy is is most likely fossil fuel.

Yes, I have taken off my foot from concrete footpath and landed on asphalt road

3:29

Slow day at SF

There really exist no asfalt runway... at least not for full size comersial aircrafts... sure for smaler regional airports... yes. All major runway with asfalt surface have concrete under. The simple reason is thay asfalt is to soft to handle full size airliners landning.

I'd be more interested to know why pilots insist on running the front wheel over the cats eyes during take off. Makes takeoff louder and bumper and I'm sure it doesn't do the wheels any good,

@cbaurtx

2 жыл бұрын

Every pilot learned: the centerline is your friend!

@twobins2060

2 жыл бұрын

@@cbaurtx thanks for the reply. It might be their friend but it makes my teeth chatter!

Ok so this was a video with internet response and research 🧐

Istanbul Airport

Grass is the best.

Uganda Airlines at 0:08.

Graphene has been incorporated into asphalt for runway construction. I can’t remember which airport though.

Does water count as a runway? (seaplanes certainly think so!)

@PoulLausen

2 жыл бұрын

There is an airport in the port of Copenhagen, for a scheduled seaplane flight between Copenhagen and the port of Aarhus and the runway is marked with buoys. But runway or seaway???

@macmedic892

2 жыл бұрын

Captain Sully certainly thought so!

If I had a glider and took off from a concrete runway it would not last very long, grass every time.

I think if you investigate you will find concrete is environmentally very unfriendly.

The word "Tarmac" says it all . ---> except Concrete

Good, he didnt call the Asphalt, TARMAC

The difference between concrete and asphalt is cost...

They don't use tarmac? Then why the hell people say tarmac then?

Runways represent the beginning and end of any given flight….. you sure about that? 9/11

Think about the heat that is trapped and radiated out increasing the mean average temperature over a period of time at the airport's location and surrounding areas especially as temperatures increase as the planet warms and in the carbon emissions that jet aircraft and airport support vehicles create that goes into the air and then factor in the indirect costs of health, pollution and environment damage that airport's create so people can have their non-essential holiday.

@tequilasunrise69

2 жыл бұрын

nah

@chrismckellar9350

2 жыл бұрын

@@tequilasunrise69 - So you don't think this is happening?

@tequilasunrise69

2 жыл бұрын

@@chrismckellar9350 i dont this is happening

@chrismckellar9350

2 жыл бұрын

@@tequilasunrise69 - Why don't you think it wont happen? Don't you know, that dark colours absorb heath? It is a known fact that wide spread use of concrete and asphalt as in urban sprawl, freeways, etc absorbs heat and then becomes a heater at night. That is why large cities are usually hotter than a small rural communities. You need to remember that an large airport foot print is equivalent to a medium size city in all the support vehicles, buildings, passenger cars arriving/departing from the airport, the toxic chemicals used in treys, asphalt, etc that is emitted, etc are factored in.

@ECEAaronXavierLobo

2 жыл бұрын

People travel for work and to visit family back home too you know...

The disillusioned energy ostensibly cheat because deer ethically land about a thoughtless butter. puny, mighty wash

So many inaccurate information in less than 5 min

Wow this video is not up to the quality of this channel. You should have done you research better. I'm really disappointed.

Concrete is made of Portland cement and stone aggregate. No "paste" involved. Get a clue.

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