ADVERTISEMENT The Carnegie Science Center in Pittsburgh, Pennsylvania features a 23-foot freestanding fire-rated curtain wall that overlooks a café and helps open up views of the Ohio River beyond. The design team used Fireframes® Curtainwall Series from Technical Glass Products (TGP) to create the stunning expanse. The narrow fire-resistive-rated curtain wall system features a tall free span without any tie-back for structural support and visually complements an adjacent non-fire-rated glass curtain wall for a unified interior.