San Francisco: Notre Dame des Victoires: Section at nave

The principal elements of the seismic solution are the addition of two transversal concrete shear walls, one in line with the back wall of the towers and extending into the rectory, the other in line with the wall separating aisle and sacristy (shown in this drawing); the adaptatilon of the steel frame over the aisles to function as a horizontal steel truss tying the two shear walls together; and the addition of a plywood diaphragm at both nave and aisle roofs.The shear wall extension into the rectory incorporates pylons to resist overturning on the opposite side, where an alley ruled out a complementary buttress. The brick walls of the rectory were anchored to newly-re-structured floor diaphragms.
Section at nave

The principal elements of the seismic solution are the addition of two transversal concrete shear walls, one in line with the back wall of the towers and extending into the rectory, the other in line with the wall separating aisle and sacristy (shown in this drawing); the adaptatilon of the steel frame over the aisles to function as a horizontal steel truss tying the two shear walls together; and the addition of a plywood diaphragm at both nave and aisle roofs. 

The shear wall extension into the rectory incorporates pylons to resist overturning on the opposite side, where an alley ruled out a complementary buttress. The brick walls of the rectory were anchored to newly-re-structured floor diaphragms.