That would be the original Nissen Hut from 1916. It was different in that its height was more than its radius. There is a very good PDF here, lots of pictures and all the many variations. http://web.mst.edu/~rogersda/umrcourses/ge342/quonset_huts-revised.pdf
I have a friend that was on Saipan in WWII. He was not a SeaBee but an aviation mechanic patching aircraft up. When they got there, the "tin benders" as he called them were put to work helping build the huts. Only they didn't get to erect them, they build the screen walls for the ends. He never touched a piece of metal on one. It was all wood and screens. He said they had bunks for 12 to 14 guys. During the rainy season, they had flaps to let down to keep the rain out. He said they built a porch on the front of theirs for sitting. That was an interesting article, it even gave information on how they were crated for shipping. That would make some great loads for someone modeling that era. Thanks for sharing it!
I like bremner's idea and photo. Interesting way to make a quick-and-dirty engine house or car barn. Here's the ex-movie theatre I mentioned in my earlier post. It's a sporting goods store now. The storefront building used to be the lobby and offices for the theatre. Photo0236 by Mike VE2TRV posted Jul 18, 2016 at 7:46 PM Photo0238 by Mike VE2TRV posted Jul 18, 2016 at 7:49 PM
That is my idea. My theorized operation is a just after WWII 2 foot gauge, which has dieselized with assorted war surplus. They need a "new" engine house, but although not a money losing operation, are not swimming in extra funds. So I had the thought of a quonset hut being adapted, as there were scads of them, available very cheap.