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(lever arm) is one of three types of component in the bracket set; the
others are the dou (block) and the gong (arm). It is the
long slanting component in a bracket set. The ang has a structural
function: to provide cantilever support for the eaves purlin (liaoyan
fang). The weight of the eaves purlin is counterbalanced by the weight
of the next higher purlin on the 'tail' of the ang (ang wei).
(See Xu and Guo 1984, 54.) See the front hall (Xian dian) of Shengmu miao for examples.
Our model kit will include ang in the next version.