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These photos are of steel H-piles being installed with a vibratory hammer at Rokko Island, Japan, in 1996.
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Exposed heads of steel H-piles after installation. A horizontal waler beam connects the pile heads together; this is in preparation for excavation of the adjacent soil.
A vibrating hammer (yellow) installs an H-pile. Alignment of the piles is ensured by the temporary guides on the ground surface.