千切とは石や木をつなぐ時、外れないように、蝶型の部材を二つの材料の間にはめ込む工法です。
ここでは波止場の角の石が落ちないように2方向に鉄製の千切が見られます。長年の波に洗われ、今では跡が残るのみです。
24.iron chigiri or medge-and-shims method
Chigiri is the method that we use butterfly-shaped wedge to prevent both of two things made of stone or wood from detaching. We can see two iron wedges in the different directions here. That is why they keep stones of the top of the wharf from falling down, The wave has washed them for a long time, so we can find just the marks.
明石ヘリテージマップ『城下』2017