Castle Clinton National Monument
Location
New York, NY
Services
Materials
Stone
Brick
Metal
Awards
2023 New York Landmarks Conservancy Lucy G. Moses Award
Castle Clinton, a brownstone fortification at the base of Manhattan, was designed by Engineer Lt. Col. Jonathan Williams and Architect John McComb, Jr. and constructed between 1808 and 1811. It is part of the second system of fortifications built for the defense of New York City during the War of 1812. JBC was retained. to assist in the restoration of the fort for the National Park Service (NPS). Working with the Contractor, JBC completed a Historic Preservation Treatment Plan for approval by NPS which outlined all work to be performed. JBC also performed a stone-by-stone sounding survey of the exterior and interior of the fort to verify conditions and repair strategies. Restoration work included stone replacement, dutchman repairs, patching, retooling, repointing, and cleaning. JBC performed quality control during the restoration to ensure all repairs are being performed according to the specifications. JBC also implemented conservation treatments to restore the bronze plaques near the entrance to the fort.
Project Scope
· Stone-by-stone sounding assessment of the fort walls to verify repairs.
· Development of a Historic Preservation Treatment Plan.
· Quality Control during construction.
· Analysis of historic mortar and development of appropriate replication mortar.
· Helped develop repairs for structural cracks around the fort.
· Performed conservation treatments to historic bronze plaques.
Project Scope
• Cleaning tests and cleaning program design
• Mortar and composite patching mix development
• Materials identification and sourcing for granite, limestone, and brick
• Photographic documentation
• Submittal consultation and review
• Assistance developing work procedures
• Construction monitoring and quality assurance