What term is used for the amount of time an activity can be delayed from its early start?

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Total float and free float refer to the amount of time, or scheduling flexibility, that exists associated with activities on the project schedule. Float may occur when there are two or more activities happening concurrently.

Total Float

Total float is measured as the difference between the early and late start dates (LS - ES) or the early and late finish dates (LF – EF). Total float is shared between the activities in a sequence. A sequence is defined as the activities between a point of path divergence and path convergence.

Total float represents the amount of time an activity can be delayed without delaying the overall project duration and is also called “float” or “slack”.

Free Float

Free float is measured by subtracting the early finish (EF) of the activity from the early start (ES) of the successor activity.

Free float represents the amount of time that a schedule activity can be delayed without delaying the early start date of any immediate successor activity within the network path.

Free float is only calculated on the last activity in an activity sequence.

Example

If activity 1.4 has a duration of 6 days and is occurring concurrently with activity 1.5 which has a duration of 9 days, activity 1.4 has 3 days of total float. Meaning, it can be delayed up to three days without any effect on the project.

However, if activity 1.4 is delayed by 5 days, there is now a negative float situation: -2 days. This reflects the fact that the project will now take two days longer than anticipated.

Summary

Total float, also called float or slack, is the amount of time an activity can be delayed without delaying the overall project duration. Total float is shared between activities in a sequence.

Free float is the amount of time an activity can be delayed without delaying the early start of any immediate successor activity.

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Leads, lags and float are concepts used in schedule development process. The process of schedule development includes: identification of all activities, sequencing all activities based on dependency, estimating duration of each activity and finalizing the schedule.

Nội dung chính Show

  • Float: 
  • Learn More :
  • Is the total amount of time that a schedule activity may be delayed from its early start date without delaying the project finish date quizlet?
  • Is the amount of time an activity can be delayed?
  • Which is the total time that a task may be delayed before it will affect the end time of the project?
  • What term is used for the amount of time an activity can be delayed quizlet?
  • Is the duration by which an activity can be delayed without delaying the project Mcq?
  • What is the amount of time that a task can be delayed?
  • What is the amount of time that a task can be delayed without affecting the subsequent task?
  • Is the amount of time an activity can sleep before it causes your project to be delayed?

Nội dung chính

  • Float: 
  • ____ is the amount of time an activity can be delayed without delaying the early start date of any immediately following activities.
  • ____ is the amount of time an activity can be delayed without delaying the early start date of any immediately following activities.
  • Learn More :
  • Is the total amount of time that a schedule activity may be delayed from its early start date without delaying the project finish date quizlet?
  • Is the amount of time an activity can be delayed?
  • Which is the total time that a task may be delayed before it will affect the end time of the project?
  • What term is used for the amount of time an activity can be delayed quizlet?

Leads, lags and float are used as part of activity sequencing process. All activities once sequenced will form a schedule network diagram. Let us first look at the definition of all these three attributes.

Float: 

Float (also known as slack) is the amount of time by which the start of an activity can be delayed without delaying the project completion time. Every task will have following set of start and finish time. 

  • Earliest start time (ES) - The earliest time, an activity can start once the previous dependent activities are over.
  • Earliest finish time (EF) - This would be ES + activity duration.
  • Latest finish time (LF) - The latest time an activity can finish without delaying the project.
  • Latest start time (LS) - This would be LF - activity duration.

Float time of an activity can be calculated by taking the difference between Late Start (LS) and Early Start (ES) OR between Late Finish (LF) and Early Finish (EF).

Float = LS-ES  OR 

=LF-EF

A positive float time indicates the flexibility we will have in delaying the specific activity without delaying the project completion time.

Typically, while doing scheduling, the critical path tasks will have zero float and the non-critical path tasks will have a positive float. That means non-critical path tasks can be delayed to certain extent without compromising on the project completion time. Float time information of tasks is very useful to the project team for taking scheduling decisions when there will be resource constraints.

Lag:

Lag is the amount of wait time between two tasks. Or in other words, lag is the amount of time by which a successor activity will be delayed. Lag can be used in all the four logical relationships in scheduling, such as Finish-to-start (FS), start-to-start (SS), finish-to-finish (FS) and start-to-finish (SF).

In below example, Task A and B have a Finish to Start (FS) relationship. Ideally both A and B should get finished on the 12th day. But when we insert a waiting of time of 2 days before B can start, then both A and B will get completed only on the 14th day.

Lead:

Lead is the amount of time a successor task can be accelerated. Lead can applied only on finish-to-start relationship between two activities. We can see the below example. In the below example, task B can start 2 days before the completion of task A. Hence the start of task B, which ideally would have been on 6th day, will not start on 4th day.

Conclusion:

Float, lead and lag are very important concepts and information for the scheduling team. These are used to optimally identify the dependencies and the associated constraints. Float information is useful in resource allocation when there are resource constraints. Lead is used for accelerating start of tasks (fast tracking) for reducing project timelines. Lag is used for ensuring that required idle or wait time after a task is appropriately provisioned.

SPM MCQ Software Project Management Chapter 6 ____ is the amount of time an activity can be delayed without delaying the early start date of any immediately following activities.

a.Total slack
b.Total float
c.Free time
d.Free slack

Answer: D

Learn More :

Is the total amount of time that a schedule activity may be delayed from its early start date without delaying the project finish date quizlet?

15. When developing a project schedule, total float refers to the amount of time a schedule activity may be delayed from its early start date without delaying the project end date.

Is the amount of time an activity can be delayed?

Total Float (TF) It is the amount of time by which an activity can be delayed without delaying the project duration.

Which is the total time that a task may be delayed before it will affect the end time of the project?

A float (or slack) in a critical path method (CPM) is the amount of time that a task can be delayed without causing any delay to Subsequent tasks and project completion date. 2.

What term is used for the amount of time an activity can be delayed quizlet?

The term total slack refers to the amount of time an activity can be delayed without delaying the start of a subsequent activity. It is possible to delay the start of a non-critical activity and, in the process, make a following activity critical.

Is the duration by which an activity can be delayed without delaying the project Mcq?

Total Float (TF) It is the amount of time by which an activity can be delayed without delaying the project duration.

What is the amount of time that a task can be delayed?

A float (or slack) in a critical path method (CPM) is the amount of time that a task can be delayed without causing any delay to Subsequent tasks and project completion date. 2.

What is the amount of time that a task can be delayed without affecting the subsequent task?

In project management, float or slack is the amount of time that a task in a project network can be delayed without causing a delay to: subsequent tasks ("free float") project completion date ("total float").

Is the amount of time an activity can sleep before it causes your project to be delayed?

Slack, also called float, is the amount of time a task can slip before it bumps into another task. It's automatically calculated into your project when you schedule tasks, and you can use it as buffer time if needed when your schedule is at risk of being delayed.

Which is the amount of time an activity can be delayed?

A float (or slack) in a critical path method (CPM) is the amount of time that a task can be delayed without causing any delay to Subsequent tasks and project completion date. 2.

What is the term used for delay in project task?

Lag/Lag time - A necessary break or delay between activities. Late finish date - The latest possible date a scheduled activity can be completed without delaying the rest of the project.

What is the project management term for the amount of time an activity can be delayed without delaying the project?

Put simply, project management float is the amount of time a given task can be delayed without causing a delay in the entire project. But, there's a little more to it than that. In fact, there are two distinct types of float that project managers use to manage task timelines: total float and free float.

What is the term you would use to describe the amount of time an activity can be delayed without delaying the successor activities?

Free float is the amount of time an activity can be delayed without delaying the early start of any immediate successor activity.