Here is a feat of engineering which isn't talked about much. The Belfast Roof was an ingenious lattice system, developed around 1860. The trusses have a curved top, and could span huge distances with no need for any vertical supports like pillars inside. These meant that large open-plan buildings - like aircraft hangars - were much easier to build and work in. Aside from being structurally clever these were visually beautiful. Some pics below gathered up from various websites. It would be good to see these reintroduced to our local architecture.
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