"springing point"的定义和意义

What is the "springing point"?

In architecture, the springing point refers to the specific location on a wall or column where an arch begins to curve upward. It is the point at which the arch transitions from being flat to its rounded shape. The springing point is crucial for determining the rise and overall geometry of the arch, influencing both its structural stability and aesthetic appearance. This feature can vary based on the design of the arch and is an essential aspect of arches and vaults in various architectural styles.