![]() | Incroyable creusement de puits à la main.Ouvriers de la construction extrêmement habiles Süre: 12:58 | Boyut: 29.68 MB |
![]() | World's Largest Well Foundation Sunk Precisely at Changtai Yangtze Bridge in Jiangsu Süre: 0:59 | Boyut: 2.25 MB |
![]() | Well Foundation | Components and Their Functions | Pile Foundation vs Well Foundation Süre: 7:19 | Boyut: 16.75 MB |