Las Brisas HOA, Solana Beach
Project: Coastal Bluff Seawall and Undercut Infill
Client: Las Brisas Condominiums HOA
Location: Solana Beach, CA
Design Engineer:
Soil Engineering Construction, Inc.
Contractor:
Soil Engineering Construction, Inc.
Geotechnical Engineer:
Anthony Taylor Consultants, Inc.
Government Permit Agent:
The Trettin Company
Project Description:
Severe undercutting of the lower coastal bluff projected a significant near future failure that would extend from the beach to the top of the bluff. The project included the design and construction of a 120' long, 35' high lower coastal bluff seawall. Work included the installation of three rows of 75' long tiebacks and the application of hand-sculpted, color-treated structural shotcrete.
Although returns were placed into the bluff at both terminating points of the wall, the Las Brisas HOA was advised that projected off-site failure to the south, due to the continuation of the undercut bluff, would result in the need for a future extension of the southern return. This failure did occur as projected within a few years of the seawall's construction and SEC, Inc. subsequently returned to the site to construct an 8' long, 35' high hand-sculpted, color-treated reinforced shotcrete return wall along the project site's southerly boundary.
The initial seawall project received an Emergency Conditional Use Permit from the Solana Beach City Council and a Coastal Development Permit from the California Coastal Commission. The site location also required that a lease be negotiated with the California State Lands Commission. The follow-up work for the extended return wall received a Development Review Permit from the city and an amendment to the original Coastal Development Permit from the Coastal Commission
Coastal Bluff Stabilization (120')
Seawall Coverage: 4,000 Sq. Ft.
Epoxy-Coated Steel Reinforcement
33 Drilled Tiebacks / Multi-Strand Anchors
Hand-Sculpted / Color-Treated Shotcrete Finish
Undercut Infill: +/- 100 Cu. Yds.
