01 | Beginning Activity Starting activity for a project plan |
02 | Ending Activity Finish activity for a project plan |
03 | Activity Generic activity or work task |
04 | Interface Activity (when 2 or more separate networks are combined to create 1 network) An activity that links one or more separate, but related, project plans |
05 | Summary Activity An activity that sums the amount of time (and resources) for lower level tasks or activities |
06 | Milestone A specific event or deliverable item |
07 | Event A specific end result or deliverable item |
08 | Constraint - Finish to Start A relationship type for activities - the succeeding activity can't start until the preceding activity is complete |
09 | Constraint - Start to Finish A relationship type for activities - the preceding activity can't start until the succeeding activity is finished |
10 | Constraint - Finish to Finish A relationship type for activities - the preceding activity can't finish until the succeeding activity is finished |
11 | Constraint - Start to Start A relationship type for activities - the preceding activity can't start until the succeeding activity starts |
12 | Constraint - Dummy A relationship type for activities to show interdependency between two activities on arrow diagram method activities |
20 | Cost Account Activity An activity with an assigned cost account number |
21 | Work Package Activity An activity with an assigned work package number |
22 | Data Item An assigned data item effort, task, or activity |
PI | Maintenance Period Identifier |
PM | Proposed Maintenance Action |
SM | Scheduled Maintenance Action |
ZZ | Mutually Defined |