escalator length (max)

The maximum escalator length in a structure is the diagonal length of the longest installed escalator that belongs to the structure.

This is the value for a single installation, the largest in the object, and not a figure for the object as a whole. The others in the same building may be far smaller, so the value describes one unit and never an average.

Where the largest is replaced or removed, the value belongs to the next largest rather than staying with the one that is gone.