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A crane mount drill, service crane and vibratory hammer were all required to advance casing through difficult soil conditions.
Underpinning below footings of adjacent historical buildings.
Underpinning is installed in sequential panels to lower existing footing levels.
Crane mount drill installing shoring in background. Completed underpinning in foreground.
Caisson wall shoring system being trimmed below grade to act as a structural support for the future building above.