Structures and sizes
Hangars need special structures to be built. The width of the doors have to be large; this includes the aircraft entrance. The bigger the aircraft to be introduced, the more complex a structure is needed. According to the span of the hangar, sizes can be classified thus:
Size
Span (meters)
S Less than 30 m
M 30â€"60 m
L 60â€"90 m
XL 90â€"120 m
XXL More than 120 m
XXL hangars are built for the largest aircraft in the world, for example:[4] the Airbus A380, Boeing 747 and the Antonov 225. Such structures are the most complex to erect.