Project+ Study Notes 15 Flashcards
Four possible logical relationships can exist between the predecessor activity and the successor activity. Understanding these relationships will help you determine if you can schedule the activities in parallel, or if one activity must wait until the predecessor task is completed.
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the successor activity cannot begin until the predecessor activity has completed. This is the most frequently used logical relationship and is the default setting for most project-scheduling software packages.
Finish-to-start (FS) In a finish-to-start relationship
the predecessor activity must start before the successor activity can finish. This relationship is seldom used.
Start-to-finish (SF) In a start-to-finish relationship
is where the predecessor activity must finish before the successor activity finishes.
Finish-to-finish (FF) A finish-to-finish relationship
the predecessor activity must start before the successor activity can start.
Start-to-start (SS) In a start-to-start relationship
most commonly used network diagramming method is the precedence diagramming method (PDM). PDM uses boxes to represent the project activities and arrows to connect the boxes and show the dependencies. network diagram depicts project activities and interrelationships among these activities.
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??? describes the time frames in which resources are available. It defines a particular resource or groups of resources and may also include their skills, abilities, and quantity, as well as availability.
??? also examine the quantity, capability, and availability of equipment and material resources that have a potential to impact the project schedule.
Resource Calendars
is the next step in constructing the project schedule. ??? can be as easy as an expert giving you an educated estimate based on their experience, or it can be a complex process involving techniques and calculations to develop estimates—albeit most of these estimates are still based on expert opinion.
Determining task durations
When you are estimating duration, you need to make sure that you are looking at the total elapsed time to complete the activity. For example, let’s say you have a task that is estimated to take five days to complete based on an eight-hour workday. You have one full-time resource assigned to this task, but they have only four hours a day to work on it. That means the actual duration estimate for this task is 10 days.
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You also need to be aware of the difference between workdays and calendar days. If your workweek is Monday through Friday and you have a four-day task starting on Thursday, the duration for that task will be six calendar days because no work will be done on Saturday and Sunday.
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