For pile construction of underground extension in the remodeling, existing piling method have limitations. These method can't access the restricted area and construction period must be delayed by many piling steps. To overcome these defects of existing method, SAP method is developed and gained the NET(No.684). Also, SAP method applied in remodeling site of Chung-Dam Dong 00 APT.

• 한병권(이엑스티(주) 기술연구소장) | Han, Byung Kwon Corresponding Author
• 송기용(이엑스티(주) 대표이사) | Song, Ki Yong
• 이왕희(현대산업개발, 기술연구소장) | Lee, Wang Hee
• 빙창민(현대산업개발, 현장소장) | Bing, Chang Minl