Azekura-zukuri

Azekura-zukuri (校倉造) or azekura is a Japanese architectural style of simple wooden construction, used for storehouses (kura), granaries, and other utilitarian structures.

[2] This style probably dates to the early centuries of the Common Era,[2] such as during the Yayoi or Kofun periods.

It is characterized by joined-log structures of triangular cross-section, and commonly built of cypress timbers.

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The Shōsō-in treasure house, built c. 759, is the oldest and largest azekura-zukuri structure in existence. [ 1 ]
Details of beam installation at the corner of a storehouse at Tōdai-ji Temple