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離岸堤等の点検項目及び 変状ランク・健全度評価基準(案)離岸堤等の点検項目(施設の機能と施設諸元の関係等) 3 離岸堤、潜堤・人工リーフ、突堤・ヘッドランドの機能と施設諸元(天端高、天端幅、堤長)の関係等
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