#author("2025-12-27T21:44:37+09:00","default:ait-survey","ait-survey") #author("2025-12-27T21:51:31+09:00","default:ait-survey","ait-survey") [[宅地擁壁の健全度判定・予防保全対策マニュアル:https://www.mlit.go.jp/toshi/toshi_tobou_tk_000069.html]] [[宅地擁壁の健全度判定・予防保全対策マニュアル:https://www.mlit.go.jp/toshi/content/001474700.pdf]] [[宅地擁壁老朽化判定マニュアル(案):https://www.mlit.go.jp/common/001281983.pdf]] [[研究]]