Howe & Queen
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The only two kinds I've ever built. Course, the widest interior span I've done is 20 feet, so others are probably better for longer spans.
Queen truss is super easy for a shed and you can build your trusses on a jig screwed to the floor, before you frame the walls.
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This is a nice series, overall. I do things a hair differently, but this is pretty good for a shed...
Link to video