Support at the base of the site
The temporary shoring held the ground for early bridge and abutment construction. Cefali performed the design for general contractor C.A. Rasmussen, with Malcolm Drilling installing the shoring.
Earth retention can support a changing grade as a slope is backfilled. At the Wallis Annenberg Wildlife Crossing in Agoura Hills, Cefali & Associates designed temporary earth shoring at the base of the site so bridge and abutment work could proceed before the southerly earthwork was complete.
The support had to fit both the early construction and the later grading. Its height could be increased as the slope was backfilled toward abutment level, connecting the earth retention design to the order of work along US 101 at Liberty Canyon.
Site conditions
Retaining a grade that changed during construction
Height added as backfill rose
The design allowed height to be added at the top of the shoring as grading operations raised the slope toward the abutment. The required support therefore followed the changing retained height during construction.
Available beams and the support layout
Cefali's design used the available Caltrans beam supply. The arrangement brought those materials together with the required support height and the grading sequence, within the temporary earth shoring scope.
Published project work
Agoura Hills projects behind this service
US-101 at Liberty Canyon Rd., Agoura Hills, CA
Wallis Annenberg Wildlife Crossing
Temporary earth retention supported early crossing construction, with shoring height added as the slope was backfilled.
Engineering scope
From local project to your site
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 earth retention systems or explore other published work in Agoura Hills.