The engineering authority shall share one third (1/3) of the project cost on Common Duct construction, the utility agencies (or organizations) two thirds (2/3) in accordance with their participated categories in Common Duct.The aforementioned allotment of participated utilities shall use the following formulae: Rj The ratio of allotment for category j utility agency. Vj The volume occupied by category j utility. (Cubic Meters) Cj Traditional construction cost per excavated cubic meter (NT$ / Cu. M) on category j utility, prescribed by the engineering authority after consultation with the relevant utility agencies (or organizations). Vj × Cj Traditional value of occupied volume for category j utility. n Number of categories of participated utility in Common Duct.