A larger geodesic dome will take considerably more time and resources to complete.  While a 15′ dome will take 60 hours approximately from start to finish a 30′ dome of roughly the same construction will take 300 hours .  This custom 30′ greenhouse dome is 706 square feet and has a 16′ ceiling height in the center.  This is not something that can easily be put together by one person.  A 3 person crew minimum is ideal, but two people can manage it.