Geodesic dome "transmigration" method is based so specifically on dome design that only fixed numbers of people can take part in the process at each deliberation stage. Many geodesic domes are among the largest clear-span structures in the world. According to the Buckminster Fuller Institute in 2010, the world's 10 largest geodesic domes by diameter are: One other large dome in Venezuela was missed on the original Fuller Institute list, while two others built later are also now in the top 10. Currently, several geodesic domes are larger than 113 m in diameter. Geodesic dome A geodesic dome is a hemispherical thin-shell
Sikorsky S-40 or "Pan Am Clipper". The three S-40s served without incident during their civilian lives, flying a total of over 10 million miles. They were turned over to the US Navy during World War II and were used as trainers for four-engined flight instruction. All three of the S-40s were eventually retired and scrapped starting in 1943. Sikorsky S-40 The Sikorsky S-40 was an American amphibious flying boat built by Sikorsky in the early 1930s for Pan American World Airways. Sikorsky designed the S-40 in response to a request from Juan Trippe, president of Pan American Airways, for a larger passenger