Coping refers to the protective covering or cap placed on top of a wall, parapet, or other architectural elements to prevent water from penetrating the structure. Coping serves as a barrier against moisture, diverting rainwater away from the masonry or underlying construction materials. Coping can come in various materials such as stone, metal, concrete, or terracotta and is designed to have a sloped or angled surface. This sloping design helps shed water away from the wall or structure, reducing the likelihood of water damage, erosion, or seepage into the building. Additionally, coping can contribute to the aesthetic appearance of the structure by providing a finished and often decorative edge to walls or parapets.