What is the purpose of notching in stone masonry?

The purpose of notching in stone masonry is primarily to allow stones to fit together tightly, which enhances the overall strength of the structure. Notching creates indentations or grooves in the stones, enabling them to interlock more effectively. This interlocking mechanism not only aids in distributing loads evenly across the wall but also contributes to resistance against lateral forces, thereby improving the wall's stability and durability.

Properly notched stones can also reduce the amount of mortar required to fill gaps, allowing for a more solid connection between individual stones. This method of construction is particularly important in heavy stone structures where stability is essential for safety and longevity. The tight fit that notching provides minimizes movement and shifting, which can lead to cracks or structural failure over time.

While there are other functions and considerations in stone masonry such as aesthetics, drainage, and pattern creation, the primary focus of notching is its role in facilitating a strong and stable assembly of the stones.