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Bob visits the Bethesda Terrace in Central Park with Doug Blonsky of the Central Park Conservancy. The carved sandstone structure is maintained by on-staff conservators who clean the sandstone and repair it using the dutchman technique, where a deteriorated piece is cut out, refashioned, and replaced. They then visit the underside of the terrace where a brick ceiling was once covered with 49 Minton tile panels. In the 1980s, the Conservancy discovered that the panels were deteriorating structurally so they were removed and stored until restoration could take place. The $3.5 million restoration is now underway with two representative panels already in place and the other 47 being restored and refashioned with a stainless-steel frame to prevent future rust. Bob looks at a panel with Vice President of Operations Chris Nolan. The wrought-iron backing deteriorated over time, rust expanded and caused failure in the mechanical fasteners that held each of the 16,000 individual tiles to the metal backing. The project will remove the wrought iron backing from the tiles, assess damage to the tiles, and repair or replace those damaged piece before putting a new stainless-steel backing on each of the one-ton panels. The project is expected to take two years to complete.
