Building Materials Exam 2 Practice

Seismic retrofit strategies are aimed at improving how structural materials perform when the ground shakes, specifically by increasing both lateral strength and ductility. Strength helps the structure resist the horizontal forces generated during an earthquake, while ductility lets it deform significantly without suddenly losing load-carrying capacity. This combination allows the building to absorb and dissipate energy, reducing the risk of catastrophic collapse and keeping occupants safer. Options that focus on material costs, fire resistance alone, or reducing stiffness don’t address the essential dynamic performance needed during seismic events. Retrofit methods like reinforcing joints, adding shear elements, or wrapping vulnerable members directly enhance these material properties to better withstand earthquake demands.