Yes there is.
Generally at 800 meter above sea level there is no scarcity of oxygen. But the air pressure may cause a problem.
In Burj Khalifa, to be on the safe side, very thick glasses are used for top floors and there are no windows that can be opened. Also Oxygen is pumped into these floors from the bottom of the building.
Top of the Burj Khalifa building
Burj Khalifa's actual name is 'Burj Khalifa Bin Zayed Al Nahyan'.
the burj khalifa is 856m
One website I looked at says you would have to stack 12.5 Burj Khalifas to get to the top of mount Everest. Also, mount Everest is growing taller, whereas Burj Khalifa is not.
Burj Khalifa in Dubai was Burj Dubai then officially renamed by Dubai's ruler as the Burj Khalifa named after the United Arab Emirates President Sheikh Khalifa bin Zayed.
Burj Dubai was officially "renamed" by Dubai's ruler as the "Burj Khalifa" -- named after the UAE President Sheikh Khalifa bin Zayed.
I designed Burj Khalifa
Burj Khalifa in Dubai.
No ,, 130 floors of the burj khalifa vs 110 of twin towers , butj khalifa way bigger
Burj Khalifa ia the new Name of Burj Dubai. While opening the world's tallest building this was declared.
The Burj Khalifa broke 14 records
HeightRoof828 m (2,717 ft)Top floor621.3 m (2,038 ft)