What type of structure eliminates the need for constructing a lead?

A corner pole is designed to provide structural support at the corners of masonry walls, enabling the construction of walls without the need for a lead. A lead typically refers to a structural element that guides the alignment of bricks or stones when building walls, especially in the absence of established corners. By using corner poles, builders can ensure that the walls are constructed straight and true from the start, streamlining the construction process.

In contrast, options like gable roofs, flush cuts, and quoined corners do not inherently address the creation of straight walls. A gable roof pertains to the shape and style of a roof rather than the foundational elements of masonry. A flush cut refers to a technique used in finishing edges, which can enhance aesthetic appeal but does not influence wall alignment significantly. Quoined corners involve special angled bricks or stones that help reinforce the corners but will still require leads for proper execution in most cases. Thus, when aiming to eliminate the need for constructing a lead in masonry, corner poles serve a unique and effective purpose.