What are alignment stakes primarily used for in construction?

Alignment stakes are primarily used to mark the horizontal position of work in construction. Their main role is to provide a reference point for the physical layout of a project, ensuring that structures and other elements are positioned accurately according to the design specifications. By establishing lines and reference points, alignment stakes help prevent issues with alignment during the construction process.

This horizontal positioning is crucial for various elements of construction, such as roads, buildings, and other large infrastructure projects. Accurate placement ensures that the project adheres to design documents and maintains proper geometry, which is vital for both functionality and aesthetics.

In contrast, other options like marking vertical positions or indicating depth pertain to different types of stakes or markers used on a job site, which focus on distinct aspects of construction such as elevation and earthworks depth. Disposing of topsoil serves a different purpose altogether and is not related to the alignment of structures. Therefore, the primary role of alignment stakes within the context of construction is indeed to mark the horizontal position of the work.