In which scenario would a topographic survey most likely be commissioned?

A topographic survey is specifically concerned with the detailed mapping of a land area’s elevation and features, including contours, trees, buildings, and other significant characteristics of the terrain. This type of survey provides crucial information necessary for the planning and design of construction projects. By mapping the topography of a site, engineers and architects can better understand how the land's shape and features will affect their designs, identifying potential challenges such as drainage issues or areas that may require significant grading.

This information is essential for ensuring that the construction fits well within the landscape and conforms to any existing natural features. It assists in creating accurate site plans and allows for better decision-making regarding the placement of structures, roads, and utilities. Therefore, commissioning a topographic survey is highly relevant and typically necessary in the preparation phase for any construction project.