Before revision: Expansion joint on a bridge An expansion joint, or movement joint, is an assembly designed to hold parts together while safely absorbing temperature-induced expansion and contraction of building materials , and vibration, or to allow movement due to ground settlement or seismic activity .
After revision: Expansion joint on a bridge An expansion joint, or movement joint, is an assembly designed to hold parts together while safely absorbing temperature-induced expansion and contraction of building materials .