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APMPFQ_Terminology_6
Section 6:Scheduling and resource management
Term | Definition |
---|---|
Lead | In a network diagram, the minimum necessary lapse of time between the start of one activity and the start of an overlapping activity |
Lag | In a network diagram, the minimum necessary lapse of time between the finish of one activity and the finish of an overlapping activity. The delay incurred between two specified activities |
Gantt chart | A particular type of bar chart showing planned activity against time. Activity durations are shown in the form of horizontal bars. |
PERT | Programme Evaluation and Review Technique. A project management technique for determining how much time a project will take to complete |
Network diagram | A pictorial presentation of project data in which the project logic is the main determinant of the placements of the activities in the drawing |
Bar chart | A chart on which activities and their durations are represented by lines drawn to a common timescale |
Critical path | A sequence of activities through a project network from start to finish, the sum of whose durations determines the overall project duration |
Milestone | A key event selected for its importance to a project |
Schedule | The timetable for a project |
Dependency | A restriction that means that one activity has to precede another activity, either in part or on total |
Duration | The length of time needed to complete and activity or project |
Earliest finish date | The earliest possible date by which an activity can finish within the logical and imposed constraints of the network |
Earliest start date | The earliest possible date by which an activity can start within the logical and imposed constraints of the network |
Latest finish date | The latest possible date by which an activity has to finish within the logical and imposed constraints of the network, without affecting the total project duration |
Latest start date | The latest possible date by which an activity has to start within the logical and imposed constraints of the network, without affecting the total project duration |
Free float | Time by which an activity may be delayed or extended without affecting the start of any succeeding activity |
Total float | Time by which an activity may be delayed or extended without affecting the total project duration or violating a target finish date |
Forward pass | A procedure whereby the earliest event times or the earliest start and finish times for the activities of a network are calculated |
Backward pass | A procedure whereby the latest event times or the latest start and finish times for the activities of a network are calculated |
Consumable resource | A type of resource that only remains available until consumed |
Renewable resource | A type of resource that has limited availablility, but which is not diminished by use |
Resource levelling | Delay or extension of time to complete activities resulting from resource constraints |
Resource smoothing | The use of float within a project to reduce variations in demand for specific resources without causing delay to the project |
Finish-to-finish | A dependency in an activity-on-node network. It indicates that one activity cannot finish until another activity has finished. |
Finish-to-start | A dependency in an activity-on-node network. It indicates that one activity cannot start until another activity has finished. |
Schedule management | The process of developing, maintaining and communicating schedules for time and resource. |