Today I'm going to join the team whose job it is to clean the outside of the world's highest windows
Oh those like me come up with this one
Okay, then look
Stay back slingback, okay, you know don't do no way
In the bucket yeah
You get nervous at all ya get a little bit scared yeah, I haven't looked down yet. Now I'd look down
It's almost
Inconceivable how high these windows are I'm 60 meters above the next platform below, which is in itself
600 metres above the ground higher than the previous world's tallest building
At this height if I dropped anything it could do serious damage
Building hive is a load of factors. You've got to take into consideration one of them obviously is gravity which I'm feeling right now
But the thing about gravity is it very predictable if the force is going one way the thing you've really got to worry about
Is wind because both very nature? It's it's unpredictable. It swirls around and it can affect the building as well as window cleaners
Surprisingly very tall buildings aren't in danger of being blown over, but have being sucked over
As
Wind hits them it can form small whirl winds called vortices
This swirling air can create low-pressure areas that tug at the building and if enough of them combine up the tools straight sides
They could make the tower rock from side to side
So why doesn't this happen to the Burj Khalifa well, it's taken some careful aerodynamic design
By stepping the building in as it rises and introducing angles and curves the Burj
Kalifa breaks up the desert wind preventing the vortices from combining dangerously
The designers call it confusing the wind and they reckon it's the only way to build this high
Curse strikes me being out here that even though we're in such a a
Technically advanced building that in order to keep it nice and clean you
Still can't beat a man with a squeegee and a bucket
It takes three months to clean all 24,000 windows and when they finished the team has to start all over again
You're gonna build a building, that's truly iconic. I'm gonna make it look nice and keep it looking nice. Yeah
You going family
While that was intense, I don't know how those guys do everyday I
Was intense but good