Or, to be more precise why was the Type-C hangar so tall? Built in the 1930s across many airfields in the UK, it was built with a higher roof (11 m) than any contemporary aircraft. (higher even than the tail of the worlds largest aircraft the Tupolev ANT-20)
Even by the end of WW2 it was still higher than any UK aircraft, even the American flying fortress could fit in (height wise)
So, why so tall? were they expecting future aircraft to be much higher? Was it also intended to house blimps? or is there some other reason?