I don’t think larger hangars than what we have now are that hard to build – not compared to, say, buildings like the Burj Kalifa. We can do tall. The biggest i

I don’t think larger hangars than what we have now are that hard to build – not compared to, say, buildings like the Burj Kalifa. We can do tall. The biggest issue would be to have a wide span without columns. But those are long shapes: if you can make a gate 50 m tall (18 floors) and 50 m wide (the Golden Gate bridge has a 1,280 m span between each tower), you can build 10 gates in a row and have enough room for a dirigible with a 45 m diameter and as long as you need, but 300 m seems doable. This prototype is 20 m wide and 124.5 m long, so if you scale it to 45 m x 45 m x 300 m, you might get something that can carry about twelve times more than this one.