Perhaps you have heard of the famous Quonset Hut? It is a lightweight structure made of half-tube corrugated iron sheeting fixed together, supported by lightweight braces and attached to a concrete base. According to Wikipedia, these structures were developed by the US Navy as “an all-purpose, lightweight building that could be shipped anywhere and assembled without skilled labor”. They are a brilliant example of user-friendliness, at least in terms of assembly. Soldiers and sailors could with minimum tools setup these simple structures. Sounds like an IKEA Billy shelf unit. They were very user-friendly. This is the Royal Canadian Air Force

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