Opus Mixtum is best described as which Roman wall facing?

Opus Mixtum is best described as which Roman wall facing?

• A. A Roman wall facing with alternating courses of brickwork
• B. A Roman wall facing with a net-like stone pattern
• C. A Roman wall facing of uniform smooth ashlar
• D. A Roman wall facing with circular stones set in mortar

Answer: (A)

Opus mixtum describes a wall facing built by mixing brick and cut stone in alternating courses, giving the façade a banded, mixed appearance. The term literally means “mixed work,” reflecting how the facing uses both materials in a regular, paired pattern to combine the strengths and aesthetics of brick and ashlar. This approach contrasts with other Roman techniques such as the net-like pattern of opus reticulatum, where small stones or bricks are set diagonally to form a diamond mesh, and with a uniform smooth ashlar facing, where large, carefully dressed blocks are laid in regular courses without alternating materials. The alternating brick-and-stone arrangement is what defines opus mixtum, so describing the wall facing as alternating courses of brickwork captures the essential method and look.

Opus mixtum describes a wall facing built by mixing brick and cut stone in alternating courses, giving the façade a banded, mixed appearance. The term literally means “mixed work,” reflecting how the facing uses both materials in a regular, paired pattern to combine the strengths and aesthetics of brick and ashlar. This approach contrasts with other Roman techniques such as the net-like pattern of opus reticulatum, where small stones or bricks are set diagonally to form a diamond mesh, and with a uniform smooth ashlar facing, where large, carefully dressed blocks are laid in regular courses without alternating materials. The alternating brick-and-stone arrangement is what defines opus mixtum, so describing the wall facing as alternating courses of brickwork captures the essential method and look.