The frameworks used to support the roofs of buildings are perhaps
the most common truss constructions. We have generated three different types of roof trusses for two different roof pitches. In Figure 10 we show each category of truss (cambered Fink, composite
Warren, and Scissors) in its own column, at the top of which is an
illustration of a real example. For a given pitch, all three types of
trusses were generated from the the same initial geometry. The variation in the results is due to different objective functions: total mass
(cambered Fink and Scissors) and total length of beams (composite
Warren), and different roof mass (the Scissors trusses have a roof
that weighs twice as much as the other two types of trusses)