| 새책 | 알라딘 직접배송 중고 | 이 광활한 우주점 | 판매자 중고 (4) |
| 246,080원 | - | - | 28,500원 |
Less invasive than a traditional poured foundation, using helical piles as a foundation gains points in the USGBC's LEED rating system, making this an important green building technology. Helical Pile Sourcebook offers a practical, real-world approach to the design and installation of helical piles.




