Geotechnical Aspects of Design & Construction for the Living Breakwaters Project-Video

Video Transcription

Video Summary

The Living Breakwaters project off Tottenville, Staten Island, was built in response to the severe damage caused by Hurricane Sandy. Its eight partially submerged structures aim to reduce storm impacts, slow beach erosion, support marine habitats, and improve the shoreline for the community.<br /><br />The presenters described subsurface investigations and geotechnical design, including settlement, seismic and wave-related slope stability, and the use of geotextiles, geogrids, and rock-filled marine mattresses. Construction challenges included mattress deformation, damaged geogrids, gaps between mattresses, and underwater installation; these were addressed through revised dimensions, repairs, stone infill, and diver inspections.<br /><br />In response to questions about sustainability, the speakers highlighted habitat features designed for native marine life, including oyster and fish-restoration areas, and the project’s role in helping the shoreline recover rather than continue eroding toward homes. The mattresses and geotextiles also serve structural and scour-protection functions.

Keywords

Living Breakwaters

Tottenville Staten Island

Hurricane Sandy

coastal erosion

marine habitat restoration

geotechnical design