1.1 This classification covers pairs of scales for classifying an aspect of the serviceability of an office facility, that is, the capability of an office facility to meet certain possible requirements for cleanliness.

1.2 Within that aspect of serviceability, each pair of scales, shown in , are for classifying one topic of serviceability. Each paragraph in an Occupant Requirement Scale (see ) summarizes one level of serviceability on that topic, which occupants might require. The matching entry in the Facility Rating Scale (see ) is a translation of the requirement into a description of certain features of a facility which, taken in combination, indicate that the facility is likely to meet that level of required serviceability.

1.3 The entries in the Facility Rating Scale (see ) are indicative and not comprehensive. They are for quick scanning and rating a facility and not for evaluating or diagnosing it.

1.4 This classification can be used to estimate the level of serviceability of an existing facility. It can also be used to estimate the serviceability of a facility that has been planned but not yet built, such as one for which single-line drawings and outline specifications have been prepared.

1.5 This classification indicates what would cause a facility to be rated at a certain level of serviceability but does not state how to conduct a serviceability rating nor how to assign a serviceability score. That information is found in Practice E 1334. The scales in this classification are complimentary to and compatible with Practice E 1334. Each requires the other.