What is the term used for the basic starting point of a building?

The basic starting point of a building is best referred to as a benchmark. A benchmark is a permanent reference point that establishes a known elevation or position, which serves as a critical reference in the construction process. It ensures consistency and accuracy in measurements throughout the project, particularly when establishing the grade or elevation at which the foundation will be placed.

In construction, benchmarks are crucial for ensuring that all elements of the building are aligned properly and meet the intended design specifications. They help contractors and builders maintain uniformity and guide the overall layout. Knowing the benchmark allows construction teams to manage elevations correctly, preventing potential issues as the building progresses.

The foundation, footing, and grid are important elements within the construction, but they relate to different aspects of building design and structure. The foundation is the actual structure that supports the building, while footings are the underlying supports that distribute the weight of the building's walls. The grid is a layout method for organizing the space and dimensions of the building design but does not serve as the critical reference point established through the benchmark.