What defines a "rubble" wall in masonry construction?

A "rubble" wall in masonry construction is specifically defined as a wall that is constructed using uncut or roughly shaped stones. This type of wall is characterized by the natural irregularities and variations in size and shape of the stones, which are typically laid in a manner that maximizes the stability of the structure. The use of rubble stone reflects a traditional approach to masonry that emphasizes the availability and cost-effectiveness of local materials, often creating visually appealing, organic textures that blend with the natural landscape.

Rubble walls do not require the precision of cut bricks, which mock a more uniform appearance and are systematically aligned. Instead, the stones are often placed in a way that exploits their natural forms, allowing for a unique and rustic aesthetic. While reinforcement with steel is important in some masonry types for added strength and stability, it does not define a rubble wall. Additionally, the concept of a temporary wall does not apply here as rubble walls are intended for permanent structures. The definition emphasizes both the materials used and the construction method, setting rubble walls apart from other masonry construction types.