Dimensions, dimensions and weights of TDP friction pendulum insulators are highly variable and are designed specifically for the project. The design of the insulators varies depending on many factors such as the weight of the superstructure, the vertical load on each insulator, the seismicity of the area where the building is located, the concrete class used in the building, the performance target of the building, and the architecture. Accordingly, earthquake isolators can be either 50 cm in diameter or 200 cm in diameter.