Soil Engineering construction

Las Brisas HOA - Solana Beach, Ca Back to Projects

    Project: Coastal Bluff Seawall and Undercut Infill   

    Client: Las Brisas Condominiums HOA

    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 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.

    Design Engineer:
    Soil Engineering Construction, Inc
    Robert D. Mahoney, G.E., C.E.G.
    John Niven, P.E.

    Soil Engineering Construction, Inc.
    Jose Guerrero, Superintendent

    Geotechnical Engineer:
    Anthony Taylor Consultants,Inc.

    Government Permit Agent:
    The Trettin Company
    Bob Trettin, Principal