wakugi　和釘

KEY WORD :　architecture / general terms

Also called nihonkugi 日本釘. A square nail used during and after the Kofun period. The nail was made of hand-wrought iron and was from 3cm-60cm long. Wakugi were classified by the shape of the nail head. The oldest nail of this type had a square head. Other heads were flat or spiral in shape. The nails were used to secure roof tiles yanegawara 屋根瓦, to eave ends *nokisaki 軒先. Double pointed nails were used to join two wooden members to make a line like a seam, nuime 縫目. This method appeared during the Heian period. At the Houryuuji *Gojuu-no-tou 法隆寺五重塔, 27 different types of nails have been identified, ranging in length from slightly over 3.03, to over 60.9.

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