DBM Contactors Inc. recently completed a 22,000-square-foot (300 feet long by 27 feet high) permanent shotcrete soil nail wall for Piazza D'Oro, a 221-townhome community with retail and office space. The owner is K. Hovnanian of California and the construction manager was J.T. Kruer and Company.

The $1.05-million contract involved installing 636 soil nails 15 feet to 35 feet long and 14 soldier piles up to 50 feet deep. The walls were designed to support adjacent residential developments and Rancho Del Oro Road. The hybrid wall included an 8-inch-thick temporary and permanent top-down wall facing with soil nails and anchoring hardware to attach a Keystone facing to the wall.

Founded in 1949, DBM Contractors, Inc. concentrates in specialty geotechnical construction and design-build heavy civil construction, emphasizing drilled foundation support, earth retention, slope stabilization, and ground improvement. DBM is headquartered in Federal Way, Wash., with a Southwest regional office in Vista, California. The company works on projects throughout the western United States, including Hawaii and Alaska.