The Loma Prieta, California, earthquake on October 17, 1989, sent out shock waves that damaged or destroyed some structures of nearly all types. But how did masonry buildings perform during the quake? They did well in some instances, and not so well in others. Reinforced load-bearing masonry buildings sustained no damage. However, the 7.1 temblor damaged or partially collapsed several old unreinforced masonry buildings. Hardest hit were old unreinforced masonry buildings in communities near the epicenter. A LOT OF UNREINFORCED MASONRY WASN'T DAMAGED While there were many damaged unreinforced masonry buildings, especially in old areas near the epicenter, there were also many that survived unharmed. The International Masonry Institute (IMI) sponsored a team of masonry experts that investigated damage to masonry buildings in the San Francisco-Oakland-San Jose-Los Gatos area a few days after the quake. Donald Wakefield, a representative of the Brick Institute of America (BIA), said, "There really wasn't much damage, considering it was a 7.1 earthquake. Masonry buildings in Oakland and San Francisco came off pretty well." REINFORCED MASONRY WORKED The IMI investigation team saw no damage of reinforced load-bearing masonry buildings. Other investigators and building inspectors had the same findings.