ABSTRACT
The New York subway’s Canarsie Line tunnel was flooded by Hurricane Sandy in 2012. Although the emergency repair was completed soon after the storm damage, the tunnel’s permanent repair is currently ongoing near the 1st Avenue Station in Manhattan. During the earlier part of the repair work, sheet pile walls were constructed for temporary earth retaining in a busy and relatively narrow street in the densely populated district. The sheet piles were pressed-in day and night to expedite construction without disturbing the area’s residents or business owners, achieving substantial cost saving compared to the originally designed earth retaining with secant pile walls.
