For the purpose of this chapter, “cost” or “actual cost” of any work performed for any person or other agency or city department by the utilities division includes the direct cost of all labor plus fringe benefits, the direct cost of all materials plus materials overhead, the direct cost of equipment rental used in connection with the work, all other direct costs incurred in connection with the work, plus administrative and supervisory cost computed at the current applicable rate as established by council ordinance or resolution. (Ord. 1237-86 § 16, 1986.)