A moment-resisting frame is a structural system designed to withstand lateral forces, such as those from wind or earthquakes. It consists of beams and columns that are rigidly connected, allowing them to resist bending moments and shear forces. This design helps maintain the building's stability and integrity during extreme conditions. These frames are commonly used in high-rise buildings and bridges, where flexibility and strength are crucial. By distributing loads throughout the structure, moment-resisting frames enhance safety and performance, making them a popular choice in modern engineering and architecture, especially in seismic-prone areas.