Creating a truly round structure poses challenges, distinct from segmented forms. While posts and braces employ square section materials, curved top plates and purlins are essential. This design incorporates Western Red Cedar (WRC) shakes over a sarking boarded roof. An inverted stainless steel T flitch secures the structure against strong winds. Oak sarking boards rest over rafters, serving as the base for nailed Cedar shakes. Rafters fit between the purlin and roof apex, with a hexagonal boss uniting the rafters at the apex and commons cut in between. Notably, purlins feature both loose keyed joints and housing into the main rafters, illustrating careful detailing.