West Maui Seawall Rehabilitation

Sinkholes the size of Volkswagons were a continuing problem for this West Maui AOAO. Over the years, the ocean swells would undermine the existing seawall, resulting in large voids and the erosion of the soils and sands behind the wall (sinkholes). The project team worked with the pertinent government agencies to come up with an environmentally friendly solution, that allowed us to permanently stabilize the seawall in place, while completing all major work on the mauka side of the seawall.

To create a new curtain wall system beneath the wall, the first step was to drill down and advance our tube-a-manchette system all the way to the coral shelf below. Once placed, the tube-a-manchette system allows us to place environmentally friendly permeation grouts, which cement all the unstable sand particles together, into a hardened mass. We are able to precisely monitor how much material is being placed at each location, but more importantly at each vertical stage of injection. This helps us ensure that we are a creating a monolithic mass beneath the wall, which is exactly what you want.