| 摘要 |
PURPOSE: A tetrapod fastening system is provided to prevent tetrapods from being flowed or carried away by waves because binding force of the tetrapods is increased. CONSTITUTION: A tetrapod fastening system(10) includes at least two tetrapods(20) and a connection unit. The tetrapod comprises a first leg part(20a), a second leg part(20b), a third leg part(20c), and a fourth leg part. The first, second, third, and the fourth leg parts are radially extended to four directions from the center of the tetrapod. The connection unit is coupled to the tetrapods adjacently each other in order to couple the tetrapods. |
