John Matteo has played an integral role in the ongoing preservation of Fallingwater for more than 20 years. As part of Robert Silman’s team, he helped to prevent the possible collapse of the house’s cantilevers through the installation of an elegant post-tensioning solution in the early 2000s. Since that time, John has consulted on a range of preservation projects that require his structural engineering expertise. John is the principal of 1200 Architectural Engineers, PLLC located in Alexandria, VA. He is also a lecturer at Johns Hopkins University’s Whiting School of Engineering.