112th St. South

The 112th Street South project is a Spiralnail wall constructed in 2023.  The wall consists of 2328 SF of wire-truss and 122 Spiralnails.  The wall was constructed by KeyWest Retaining Systems, Inc., designed by Cesaretti Engineered Solutions / The County of Pierce, and owned by the County of Pierce.

The video below shows how Spiralnails are driven into the backfill by a specially made, excavator held hammer. The Spiralnails add stability and structure to the overall wall without compromising the uniform wall face.