👉 Counterpoles are a type of structure found in many different types of buildings and structures, such as bridges, arches, and buildings. These structures are made up of two parallel layers, with one layer being more vertical than the other. The top layer is usually called the "upper" counterpole, while the lower layer is called the "lower" counterpole. This type of structure allows for a stable and sturdy foundation, as the two layers can support each other without any external forces acting