Windows that are inset in exterior walls indicate what type of construction?

• A. Wood Frame
• B. Steel Frame
• C. Glass Curtain
• D. Masonry

Answer: (D)

When windows sit recessed into the exterior wall, it signals a solid, thick wall typical of masonry construction. In masonry walls—brick, stone, or concrete block—the openings for windows are cut into the wall mass and framed with lintels and sills, leaving the window inset from the outer face. Wood or steel frame walls are built around a framing system, so windows are usually installed within that frame and tend to sit flush with the exterior surface unless extra detailing is added. A glass curtain wall would look different, since the facade is a non-structural glass skin rather than a thick solid wall. So the inset appearance clearly points to masonry construction.