Giant airships could carry whole buildings

Interesting idea but with so many potential problems. Problems that could be overcome with proper engineering, of course, but not as simple as it might first seem. And YouTube would be inundated with new UFO videos...

Bit behind the times... Hybrid Air vehicles already have plans for a 1000 tonne airship lifter, and are contracted to the US DOD to build a 304ft airship this year http://www.hybridairvehicles.net/

So, one step closer to Al Bielek's floating cities?

10 feet wide and can carry one pound? 150 feet wide can carry how much? 500 feet wide can carry 150 ton Unless they have some kind of super gas I doubt anyone will see it carry that much unless it is the size of the moon.

10 feet wide and can carry one pound? 150 feet wide can carry how much? 500 feet wide can carry 150 ton Unless they have some kind of super gas I doubt anyone will see it carry that much unless it is the size of the moon. Think "volume" This makes a huge difference when scaling-up. For example(assuming a spherical balloon): 3-ft diameter lifts .9 pounds 6-ft diameter lifts 7.1 pounds 12-ft diameter lifts 57 pounds 24-ft diameter lifts 455 pounds 100-ft diameter lifts 33,000 pounds !!! Source: http://science.howstuffworks.com/helium2.htm