Structures located near steep embankments often face long-term problems. A relatively steep hillside at a Catholic college in West Los Angeles had suffered settlement and creep problems since its construction 40 years ago. Geotechnical analysis of the slope indicated the potential for landslide failure during a major seismic event.
Cefali & Associates designed a system of three walls utilizing soldier piles, walers, permanent tiebacks, and cast-in-place walls to hold the hillside. The soldier piles were up to 90 feet long. The tieback anchors were double-corrosion strand anchors up to 100 feet long with test loads as large as 450 kips.
Contractor: Malcolm Drilling Inc.
Geotechnical Engineer: Amec