groining

Groining refers to the process of forming a rounded or curved surface, typically where two planes meet at an angle. In architecture and construction, it is most commonly observed at the intersection of walls or where a wall meets a ceiling or floor. This technique creates a smooth transition between surfaces, eliminating sharp corners.

The term can also be applied to the process of shaping or molding materials into a convex or concave form. This might be seen in sculpting, pottery, or manufacturing, where a curved edge or surface is desired. The specific methods used for groining vary greatly depending on the material and the intended application.

In some contexts, groining can be a decorative element, adding visual interest and a sense of flow to a structure or object. It can also serve a functional purpose, such as facilitating drainage or reducing wear and tear on sharp edges. The visual appearance of groining is characterized by its continuous curvature.