Final answer:
The bare minimum functional width for a walkway outdoors can vary depending on the context. Previously, a rule of thumb was to have a width of 5 side-to-side and 7-8 deep, but newer work suggests a wider width.
Step-by-step explanation:
The bare minimum functional width for a walkway outdoors can vary depending on the context. Previously, a rule of thumb was to have a width of 5 side-to-side and 7-8 deep, but newer work suggests a width of as much as 8 diameters side-to-side and 15 diameters deep.