"barge course"的定义和意义

What is a "barge course"?

A barge course is a horizontal layer of bricks or stones that runs along the top of a wall, usually at the edge of a roof. This course is often wider than the other layers of building material and helps to provide extra support and stability to the structure. The barge course also helps to direct water away from the wall, preventing moisture from seeping into the building. It can be decorative as well, adding a finishing touch to the building's design. Barge courses are commonly found in various types of architecture, especially in traditional and historical buildings.