Pembroke, Commonwealth Pier Revitalization

Resiliency Efforts

The rising water level in Boston Harbor threatens to cause catastrophic damage to local infrastructure as observed during the winter of 2018. Resiliency strategies on this project:

• An eighteen-foot wide concrete apron walkway wraps the perimeter of the building for wave impact. Flanges were welded into the apron support steel with rods connecting the jacket of the supporting caissons to connect the apron system and resist uplift forces. This connection to the caisson jackets was accomplished by utilizing underwater marine welding. 
• Seepage Cutoff and Pressure Relief - A perimeter seepage cutoff wall and steel sheeting were installed on the interior of the existing seawall to limit water infiltration into the subsurface zone below the slab on grade
• Resilient Curb at Perimeter of Building - To accommodate future sea level rise, a perimeter waterproofed curb was incorporated into the facade system designs. This curb is also integrated into the apron and building structural systems. The height of the curb was based on a 2070, 100 year storm event design criteria. The curb is utilized on the majority of the 2,500+ linear foot perimeter building with the exception of doorways and other openings.