1. Seismic design involves careful planning, analysis, detailing, and construction to create earthquake-resistant structures. 2. Key steps in planning include making the building symmetrical, avoiding weak stories, selecting good materials, and following code provisions. 3. Design considerations are analyzing structural elements, avoiding weak columns and strong beams, using shear walls and bracing, and designing for increased forces in soft stories. Ductility is increased through design and material choices.