Marine Projects

McLaren provided waterfront site development services including marina development, site/civil engineering, marine engineering, shoreline stabilization, and construction administration. These services included preparation of an overall concept plan, preparation of an in-water structures plan, fathometric survey, shoreline investigation and assessment, and shoreline design alternatives. The project also included preparation of an existing conditions report for the entire waterfront, permit preparation/acquisition, condition assessment of timber piles, preparation of construction documents associated with the site, and design of promenade.

McLaren performed underwater inspections of the project site and waterfront structures, and reviewed all available documentation about these existing structures. McLaren generated a plan for the demolition and redesign of the existing pier at Kent Street and coordinated permitting. For the creation of a waterfront esplanade, McLaren created demolition plans for various existing structures and design documents for shoreline improvements to support the esplanade. McLaren developed several design alternatives for the NYCDEC’s review, taking into account cost efficiencies and sustainable design.

McLaren developed design criteria for the new ferry landing, marina and building structures, which included design loads, vessel types, ADA requirements and material specifications. Upon an above and below water survey, McLaren determined the condition of the existing components of the marina before coming up with rehabilitation design plans. Additionally, McLaren assisted in a boring program and in submitting for the appropriate permits. McLaren outlined specifications for the new ferry landing, marina and building structures and proposed preliminary and final design documents.

McLaren’s role was to provide professional engineering support services for the successful rehabilitation of the mooring dolphin. Repair schematics and specifications were issued to address the fender damage and restore the condition of the mooring dolphin. Repair recommendations were made to address the scour problems at the footings. Repairs were accomplished by using prestressed anchor tie rods, which extended through the top of the deck and were grouted in place. McLaren provided inspections, analyses, assessments, recommendations, and estimated repair costs in the form of a Summary Letter Report.

Under this agreement, McLaren assessed the conditions of and made repair recommendations for approximately 3,500 precast concrete piles that support the relieving platforms at the Battery Park City esplanade, as well as timber piles that support a platform to the north end. Following the inpection, McLaren embarked upon a testing program to further investigate the “hot spots” (areas of significant deterioration). McLaren also performed a statistical analysis of the inspection data to determine the cause and extent of damage to the piles and seawall. McLaren considered the effects of water chemistry, abrasion, and impact in this analysis. Using the analysis results, we then developed repair alternatives with cost estimates. After the final repair scheme was approved, McLaren prepared construction documents and specifications and provided construction administration services, including bid support.