What are semifixed dimensions used for?

Semifixed dimensions serve the purpose of locating elements with a legal degree of accuracy, often essential in site planning and construction documentation. These dimensions are typically employed when there is a need to identify and establish precise locations for various features, such as property lines, utility placements, and other critical components that may have legal implications. Utilizing semifixed dimensions ensures that these elements adhere to the necessary codes, regulations, and standards, minimizing the risk of disputes or errors during the construction process.

In contrast, the other options involve concepts that either lean towards more flexible dimensional applications or focus on aesthetic placements, which do not align with the primary intent of semifixed dimensions. These distinctions highlight the importance of understanding how different types of dimensional systems are utilized in site design and construction practices.