Schedule Management Flashcards
outputs
what is produced by project
outcome
changes resulting from adopting the product
benefit
improvement from the outcome - perceived by stakeholders
PBS
product breakdown structure. hierarchical breakdown of products that make up main output. shows project in more detail will all have a requirement specification
WBS
work breakdown structure. tasks with verbs, work packages is lower level. hierarchical rbeakdwon of the work required to deliver products of project
Work packages
lowest level of planning, budget can be estimated, self-contained, single person accountable, can be broken down further into activities
CBS
cost breakdown structure. into people, equipment, materials, consumables.
(resource) Links between project and BAU
- human resource availability - can they priorities project timescale over day-today work. 2. dependencies on BAU output that is delayed can then delay the project. 3. stakeholder availability, may be required for BAU. 4.equipment availability, may be needed by BAU. 5. conflict between needs of BAU and needs of project.
Risks from interdependencies
1, by acknowledging relationship, PM can better anticipate challenges,2. streamline resource allocations, 3.ensure schedule of project will not be excessively impacted by BAU
Creating a project schedule
Use work packages in WBS to create a precedence diagram by adding interdependencies. This is then put against time, with estimation of each package, work out float throguh forward and backwards passes. Become Gantt chart. updated throughout project. Gantt chart used to create a histogram to understand resource availability
Critical path
longest path through gantt which can’t be moved without change request. identifies activities that will affect end date if delayed. (may have hidden contingency bc of overestimating)
Critical chain
assumes estimates are inherently wrong. find critical resource and put buffer around them. take estimated duration for each activity and take time off to create buffer at end of project. to protect whole project. buffer will have money against it
Estimating techniques
- Parametric estimating (statistical relationship between historic data and other variables). 2. Analogous estimating (comparison with cost of previous work) 3. Analytical estimating (bottom up). 4. Delphi technique (use individual expert judgement
Benefits of re-estimating
- greater involvement of project team (use their expertise to clarify, makes it more accurate). 2. opp to incorporate lessons learned (include trends from previous work). 3. Reduce or release unnecessary contingency reserves that were added in definition (makes it more accurate). 4. If assumptions prove wrong, mean PM can make adjustments to costing forecast and schedule. 5. increase confidence and know if more money or time required
When to reforecast
- when assumptions prove wrong. 2, when circumstances change. 3. whe not know who will do the work 4. when there is an unnecessary contingency. 5. when there was a lack of previous data