With the exception of kitchens, what is the minimum width required for habitable spaces in any plan dimension?

The minimum width required for habitable spaces, with the exception of kitchens, is indeed 7 feet. This specification is based on building codes that aim to ensure sufficient space for occupancy and safe egress in various building types. The minimum width allows for proper furniture arrangement and movement within the space, addressing both comfort and utility.

In residential and commercial building design, maintaining a minimum dimension helps to facilitate functionality and accessibility. It also better accommodates activities typically performed in habitable areas, such as living, working, or recreational activities, which usually necessitate more space than lesser widths would provide.

The other defined measurements, such as 3 feet, 5 feet, and 11 feet, do not meet the standard required for habitable spaces. Widths of less than 7 feet can lead to cramped conditions that are not considered comfortable or practical for daily activities, making them unsuitable for habitable uses according to code standards.