In the earlier Japanese and Chinese architecture you can find many exposed roofs. These can vary from very elaborate structures such as the Yakuski Pagoda, to very simple form, like a barn. With a critical eye one can analyze s connection to joinery systems.
The Yakushiji Pagoda is based on traditional Chinese building methods. This building method uses bracketing to connect the roof truss to the exterior columns.In the image below you can see how a complex bracket is assemble. The use of this joinery acts not only for structure but also for aesthetic appearances.The joinery creates the geometric space of the overall view of the roof. 
In the interior of the Yakushiji Pagoda you are able to see how the joinery are used to divide up the space, creating the intricate layers of patterns. The bracket complex sit on the columns and from the bracket are Japanese post-supported purlin roof with spliced collar beam. Viewing from below, the layering of joinery and the trusses appeared as one larger pattern. This overall appearances produces a grand atmosphere.
Graubner, Wolfram. Encyclopdia of wood Joints. Newtown: The Taunton Press, 1992. 14-21. Print.
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