This past week, the contractor completed the drilling operation for the horizontal soil anchors (total 30) at the uphill retaining wall. The work involved drilling a 6 inch diameter hole extending approximately 60 feet from the face of the retaining wall. The drilled hole is filled with a bundle of steel cables that are grouted into the drilled shafts and then tensioned by a hydraulic jack. Below is a picture of the soil anchors. The soil anchors are part of a retaining system that holds the large mass of slide material in place. The contractor will continue working on the operation to set these soil anchors through this week. Upon completion of the soil anchors, the contractor will begin construction of the downhill retaining wall foundation during the week of September 11. The downhill retaining wall includes the installation of 36 inch diameter cast-in-drilled-hole reinforced concrete piles to depth of approximately 57 feet (total 36). The contractor anticipates installing 3 piles per day with pile completion approximately 12 working days later.
We will provide project updates and pictures as the project moves forward.
For the safety of residents and construction workers, please do not go into the project site. A 6 foot tall chain link fence has been placed across the road at both ends of the project for your protection.