Seismic loading
The nearby Newport-Inglewood fault added a significant seismic load increment to the permanent wall design.
Hoag Hospital’s central plant site needed a permanent retaining wall about 50 feet high at the base of its campus hill. The wall had to address seismic forces as well as groundwater and limited room for permanent anchors.
Cefali & Associates designed a tied-back soldier pile wall with 47 piles and 70 tiebacks for the Newport Beach site.
Site conditions
The nearby Newport-Inglewood fault added a significant seismic load increment to the permanent wall design.
The design accounted for groundwater, an existing methane gas well, and a nearby property line that constrained permanent tiebacks.
Published project work

A 50-foot permanent retaining wall used 47 soldier piles and 70 tiebacks at Hoag Hospital.
Engineering scope
These projects show how excavation depth, neighboring structures, access, and the permanent work can change the support design. Your site needs its own geotechnical criteria and structural design. The contractor determines installation and construction means and methods.
Read more about retaining walls or explore other published work in Newport Beach.