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Engineering Disciplines
Services
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Piers, Wharves & DocksOceanside Pier Rehabilitation, Oceanside, CA.
Anaheim Bay Modernization, Naval Weapons Station, Seal Beach, CA.Preliminary engineering designs were prepared for alternative structures to expand the capability of this strategic Pacific fleet support facility. New inner bay and open coast berthing areas were conceptualized to service deep draft ships ranging in size from CG to CV class. Preliminary designs were prepared for a 126,000-square-foot interior basin concrete wharf; a 60,000-square-foot offshore pier; 3,300 lineal feet of steel and concrete trestle for rail and truck access to a new offshore terminal; a 60,000-square-foot offshore island terminal with container crane; and a small barge terminal to lighter cargo from offshore moorings. Alternative designs were evaluated on the basis of constructability, cost, and environmental impact considerations in selection of a preferred plan. Ventura Pier Repair/Reconstruction, Ventura, CA.
Port Hueneme Pier Rehabilitation, Port Hueneme, CA.This project was to restore the deteriorated portions of the municipal fishing pier. This was accomplished by replacing and upgrading approximately 7,000 square feet of the timber pier. NCI's services included specification of design criteria; structural analysis; supervision of geotechnical, electrical and mechanical design services; and preparation of construction plans and contract documents. Alternative pier replacement plans were also considered. A conventional timber frame design was selected which enabled deck construction to be performed by a prefabrication technique, resulting in considerable cost savings. On-site construction inspection and consultation were also furnished to monitor pile driving, contract administration items, and work progress.
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NCI performed geotechnical and oceanographic investigations, as well as an engineering feasibility study; developed all design criteria; and prepared the plans, specifications, and construction bid documents for demolition of 1,600 feet of storm-damaged timber pier and construction of a new pier and pier buildings. NCI's recommendations were for a sophisticated timber and pipe-braced pier system that would be aesthetically pleasing, would withstand the 100-year storm, and could be constructed within the City's budget. Key structural elements of the pier's design included timber piles, pile treatment and wrapping, pipe bracing system, and diagonal timber decking system, as well as other features. Buildings constructed on the pier were a two-story restaurant, retail shop, bait shop, restrooms and lifeguard structures. NCI also evaluated all submitted bids and provided the construction administration and full-time residence inspection during demolition of the damaged pier and construction of the new pier and buildings.
NCI reviewed the storm damage history and exposure of the Ventura Pier in an effort to find ways to reduce recurrent damages. Deficiencies in the existing timber pile supported structure were improved at relatively nominal expense by using a system of steel pipe bracing and steel beam reinforcement of the deck frame at key locations. The pier strengthening design developed by NCI was severely tested during the El Niņo winter storm season of 1998. Damages were confined to a modest level, and catastrophic losses were completely averted. Replacement of the 420-feet outer end of pier that was lost during the December 1995 storm is proceeding toward construction with a new octagonally shaped terminus and includes replacement of the outer section of existing timber pier. This replacement pier work utilized steel foundation piles and steel framing with timber stringers and deck system. NCI assisted the City to review all pier replacement options; participated in a citizen involvement planning committee; performed final engineering design; prepared construction drawings, specifications and contract documents; and provided construction administration and resident inspection services. The new work, which will increase the deck height of the outer end of the pier, will decrease the pier's exposure to wave damage.
Channel Islands Docking Facility, Ventura Harbor, Ventura, CA.
The Pier 98 project was a 20+ acre fill site in the San Francisco Bay estuary. The Port worked with regulatory agencies and community groups to formally close the landfill and enhance existing features. Noble Consultants was involved in designing a pile-supported fishing pier and analyzing shoreline stabilization concepts. The fishing pier is an aluminum structure supported on prestressed concrete piles. The decking and handrail are Trex, a recycled plastic material.
NCI prepared construction repair plans and specifications for three tasks for GP Gypsum at their Port of Long Beach Facility. The first was the structural repair of an existing 50-year old concrete wharf that, due to time and a corrosive environment, developed numerous cracks and spalls. These cracks and spalls were inventoried, stripped, cleaned and repaired either with formed or injected epoxy grout. There were approximately 150 individual repairs performed. The second task was the repair of 18 existing corroded piles that were supporting the building. NCI used a filter reinforced jacket around the piles and injected grout. The repair methods were compatible with the Phase 2 repairs that were anticipated for the substructure. The third task was a fender replacement feasibility report. NCI evaluated wharf fender alternatives and provided recommendations to replace the existing deteriorated fenders. Cost estimate and analysis were also provided.
