Earthquakes cause buildings to experience horizontal and vertical shaking motions. This shaking generates inertia forces within buildings that must be safely transferred through floors, walls/columns, foundations, and into the soil. Horizontal shaking is a particular concern as it can cause buildings, which are designed only for vertical gravity loads, to fail. Traditional construction often neglects properly designing walls/columns to transfer horizontal inertia forces from floors through to foundations and soil. Failures of inadequately designed masonry walls and reinforced concrete columns have been observed during past earthquakes.