For qualifying for an area factor increase based on frontage, the adjacent public way or open space must have a minimum distance (W) of how many feet measured at right angles from the building face?

To qualify for an area factor increase based on frontage, the adjacent public way or open space must have a minimum distance of 20 feet measured at right angles from the building face. This requirement is in place to ensure that there is adequate space for movement, visibility, and accessibility in relation to the building's entrance and overall design.

Having a distance of 20 feet allows for effective interaction between the building and the public space, promoting a better flow of pedestrian traffic and providing a buffer zone that can enhance the aesthetics and functionality of the area. It enables vehicles to maneuver safely while allowing room for landscaping, outdoor seating, or other elements that contribute to a welcoming environment.

The specified distance supports urban planning principles aimed at developing well-integrated structures that are harmonious with their surroundings and accessible to the public.