The Supreme Court could decide on the legality of many of the Trump administration's tariffs within months, but the ruling won't impact many of the administration's levies on imported construction materials such as lumber, steel, aluminum and copper. The case before the Supreme Court contests the legality of the president's use of the International Emergency Economic Powers Act (IEEPA) to enact sweeping tariffs on almost every country, including the reciprocal Liberation Day levies announced on April 2.
The term vault in architecture refers to a self-supporting arched structure that forms a ceiling or roof, which can effectively create a wide, column-free space. While traditional masonry vaults transfer loads to walls and buttresses, contemporary versions are more broadly defined as any ceiling that follows the roofline, creating a high, curved interior. These modern ceilings are typically framed using materials like concrete, timber, or steel, which provide the structural flexibility to create the dramatic effect of a vault without its historical constraints.