What is the term for the horizontal distance between the outermost building line of a higher floor and that of a lower floor?

The term that describes the horizontal distance between the outermost building line of a higher floor and that of a lower floor is known as a floor projection. This concept is significant in building codes and regulations as it relates to the design and aesthetics of a structure. Floor projection plays a crucial role in ensuring that upper floors do not excessively overshadow lower floors, maintaining light access and views from the lower levels. Moreover, understanding this term is important for compliance with zoning regulations and potential impact on neighboring properties.

Incremental setback typically refers to a requirement for buildings to be set back from property lines to provide space for activities or walking paths, rather than focusing on the relationship between different levels of a building. Building extension usually pertains to an outward expansion of a structure rather than the specific comparison of floor levels. Space regulation is a broader term that can encompass various zoning laws and restrictions but does not specifically denote the relationship of horizontal distances between building floors.