Dressed stone [STDRE]

Square or rectangular-shaped prismatic stone blocks in bonded courses with narrow joints, with or without mortar. Usually found in areas where calcareous stones and tuffs (rocks formed from volcanic ash), which are relatively easy to shape, are available.

Dressed stone masonry wall, Italy (Maffei et al., EERI, 2006)

A stone masonry wall (exterior wall wythe built using tuff stone) in San Giuliano damaged in the 2002 Molise earthquake, Italy (A. Benedetti)