20. For the purposes of the percentage method, engineering work must be classified using the groups and classes in the Schedule.
The purpose of the works as a whole, rather than of one of its components, must be taken into consideration for the classification.
Types of works not listed in the Schedule must be placed in the class to which they are most similar, and the choice of the class must be made by agreement between the client and the firm.
D. 1235-87 (French only), a. 20; O.C. 195-2023.