Protective Masonry – Name of a wall built to shield natural slopes from weathering A wall constructed of stone to protect the face of cut slopes in natural ground from weathering and erosion is called:

Introduction / Context:
Hillside and roadside works often need masonry or concrete elements to stabilize or protect exposed ground. Several wall types exist, each with a distinct purpose. Knowing the correct term prevents design and construction errors and clarifies specifications.

Given Data / Assumptions:

• Wall is built against a natural or cut slope face.
• Primary purpose is protection against weathering/erosion, not necessarily to retain large lateral earth pressures.
• Construction material is stone masonry.

Concept / Approach:
A breast wall is built to protect and support the surface of a slope, reducing erosion and minor sloughing. By contrast, a retaining wall is designed to resist significant lateral earth pressure from a fill or cut. A parapet is a low protective wall at an edge, and a buttress is a projection used to stiffen another wall.

Step-by-Step Solution:
Match function: slope face protection → breast wall.Differentiate from retaining wall: primary retaining action is not the focus.Exclude parapet/buttress/wing wall based on definitions.

Verification / Alternative check:
Highway and hill road manuals routinely specify breast walls to protect cut slopes, often combined with surface drains and pitching.

Why Other Options Are Wrong:

• Retaining wall: resists substantial earth pressure; different design intent.
• Buttress: a stiffener projecting from a wall, not a free wall protecting slopes.
• Parapet/wing wall: guard/return walls with other functions.

Common Pitfalls:
Over-relying on breast walls where true retaining structures are required; always assess stability and drainage.

Final Answer:
Breast wall