Resource-Dependent Task is an activity that is defined and scheduled according to the resource plan of related work (larger task, project or process). It is the smallest piece of work which is dependent on other related tasks that all together use common resource base. The term is widely used in critical path methodology (CPM).
Resource-dependent tasks are planned and performed under rules of resource-based dependency. Such dependency means that tasks are interrelated to each other if they use the same available resources (funds, time, labor). In CPM, resource-dependent tasks are defined to determine critical path, or the longest possible sequence of activities which must be completed on time to ensure completion of a related project on due date. Critical path activities use common resource base.
Resource-dependent tasks are never managed according to a time schedule; they use resources schedules instead. A resource schedule is a plan that defines and schedules allocation, aggregation, and leveling of resources. Resource scheduling is the core activity that determines interconnections between resource-dependent tasks.