In a building with more than one floor, the term spandrel is also used to indicate @the space between the top of the window in one story and the sill of the window in the story The term is typically employed when there is a sculpted panel or other decorative element in this space, or @when the space between the windows is filled with opaque or translucent glass, in this case called spandrel In concrete or steel construction, an exterior beam extending from column to column usually carrying an exterior wall load is known as a spandrel 来源维基百科,供参考。