Project Management tool: Gantt Chart - Revision history

Tkokotas at 12:34, 18 December 2018

2018-12-18T12:34:52Z

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			''Developed by Stephanie Saavedra''


	A Gantt chart is one of the most popular and useful ways of showing activities (tasks or events) displayed against time. On the left of the chart is a list of the activities and along the top is a suitable time scale. Each activity is represented by a bar; the position and length of the bar reflects the start date, duration and end date of the activity. <ref name="gantt"> What is a Gantt Chart?- Gantt Chart History http://www.gantt.com/index.htm</ref>This allows to see at a glance:		A Gantt chart is one of the most popular and useful ways of showing activities (tasks or events) displayed against time. On the left of the chart is a list of the activities and along the top is a suitable time scale. Each activity is represented by a bar; the position and length of the bar reflects the start date, duration and end date of the activity. <ref name="gantt"> What is a Gantt Chart?- Gantt Chart History http://www.gantt.com/index.htm</ref>This allows to see at a glance:

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2016-09-24T07:56:11Z

Annotated Bibliography

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 For more information about how to manage task dependencies read: https://www.projectmanager.com/blog/manage-task-dependencies
 == References ==
 <references />

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2016-09-24T07:45:46Z

Advantages

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	==Advantages==		==Advantages==
	[[File:Chart1.png\|300px\|thumb\|right\|Figure 1 - Source: http://creately.com/blog/diagrams/5-reasons-to-use-gantt-charts/ ]]		[[File:Chart1.png\|300px\|thumb\|right\|Figure 7 - Source: http://creately.com/blog/diagrams/5-reasons-to-use-gantt-charts/ ]]
	[[File:Chart2.png\|400px\|thumb\|right\|Figure 2 - Source: http://creately.com/blog/diagrams/5-reasons-to-use-gantt-charts/ ]]		[[File:Chart2.png\|400px\|thumb\|right\|Figure 8 - Source: http://creately.com/blog/diagrams/5-reasons-to-use-gantt-charts/ ]]
	The application of a Gantt Chart in a project allows to:		The application of a Gantt Chart in a project allows to:

	''Avoid Completion Confusion:'' By providing a visual overview of milestones and other key dates, these charts are thought to offer a more understandable and memorable method of maintaining timescale-based tasks and deliverables whether tracked on a daily, weekly, monthly or yearly basis. [[Figure 1]] shows the power of visualization found in Gantt charts. In a glance you can see that the interviews are done, there 50% more to do in training etc.<ref name="5reasons"> http://creately.com/blog/diagrams/5-reasons-to-use-gantt-charts/</ref>		''Avoid Completion Confusion:'' By providing a visual overview of milestones and other key dates, these charts are thought to offer a more understandable and memorable method of maintaining timescale-based tasks and deliverables whether tracked on a daily, weekly, monthly or yearly basis. [[Figure 7]] shows the power of visualization found in Gantt charts. In a glance you can see that the interviews are done, there 50% more to do in training etc.<ref name="5reasons"> http://creately.com/blog/diagrams/5-reasons-to-use-gantt-charts/</ref>


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	''Understand Task Relationships:'' These charts can make clear how various tasks are interrelated and perhaps rely on the completion of another to meet specific objectives. These task relationships revolve around understanding the timing of each task, which then impacts other tasks listed([[Figure 2]]). This can better assure the optimum work flow, maximized productivity and overall project success.<ref name=5reasons/>		''Understand Task Relationships:'' These charts can make clear how various tasks are interrelated and perhaps rely on the completion of another to meet specific objectives. These task relationships revolve around understanding the timing of each task, which then impacts other tasks listed([[Figure 8]]). This can better assure the optimum work flow, maximized productivity and overall project success.<ref name=5reasons/>

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2016-09-24T07:44:49Z

Limitations

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 == Limitations ==
-It does not identify potential weak links between phases . Whenever work is transferred from one person or department to another, your project is subject to potential delay. These weak links are the most common causes of delays.
+Some of the disadvantages of the Gantt Chart are:
-It does not reveal the problems your team will encounter due to unexpected delays
+''Resources:'' it does not coordinate the resources or networking needed. As the only information that we get from the chart is regarding the duration of the task, one task with the same length than the task following could require half of the resources than the next one. If the managers would only look at the Gantt chart will not be aware of this situation.
+The Gantt chart is a good tool to have an overview of the project regarding the duration of the tasks, but only by itself is not enough for the management of a project.
 == Annotated Bibliography ==

S150994: /* Float */

2016-09-24T07:40:52Z

Float

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	The float time for an activity is the time between the earliest (ES) and the latest (LS) start time or between the earliest (EF) and latest (LF) finish times. During the float time, an activity can be delayed without delaying the project finish date. <ref name="floats"> http://www.tutorialspoint.com/management_concepts/leads_lags_floats.htm</ref>		The float time for an activity is the time between the earliest (ES) and the latest (LS) start time or between the earliest (EF) and latest (LF) finish times. During the float time, an activity can be delayed without delaying the project finish date. <ref name="floats"> http://www.tutorialspoint.com/management_concepts/leads_lags_floats.htm</ref>

	The maximum time to complete a project is the ~~different~~ between the early start date of the project and the late finish date. The maximum float can be calculated by subtracting the duration of the project to the maximum time to complete the project. And the minimum float is the difference between the late start and the early finish and then deducting the duration of the project.		The maximum time to complete a project is the difference between the early start date of the project and the late finish date. The maximum float can be calculated by subtracting the duration of the project to the maximum time to complete the project. And the minimum float is the difference between the late start and the early finish and then deducting the duration of the project.

	During the planning of the project these float estimates can be use but they will need to be adjust during the course of the project. The float can be calculated for a section of the project and as a total for the whole project. The float can be use in case a phase of the project gets delay there will be a possibility to get things back on track if there is not float spend in the next phase. The chances of unexpected situations are always possible, because of this other considerations should be made by the project manager in order to mitigate the risks.		During the planning of the project these float estimates can be use but they will need to be adjust during the course of the project. The float can be calculated for a section of the project and as a total for the whole project. The float can be use in case a phase of the project gets delay there will be a possibility to get things back on track if there is not float spend in the next phase. The chances of unexpected situations are always possible, because of this other considerations should be made by the project manager in order to mitigate the risks.

S150994: /* Float */

2016-09-24T07:23:36Z

Float

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	The float time for an activity is the time between the earliest (ES) and the latest (LS) start time or between the earliest (EF) and latest (LF) finish times. During the float time, an activity can be delayed without delaying the project finish date. <ref name="floats"> http://www.tutorialspoint.com/management_concepts/leads_lags_floats.htm</ref>		The float time for an activity is the time between the earliest (ES) and the latest (LS) start time or between the earliest (EF) and latest (LF) finish times. During the float time, an activity can be delayed without delaying the project finish date. <ref name="floats"> http://www.tutorialspoint.com/management_concepts/leads_lags_floats.htm</ref>

	The ~~difference~~ between the early start date of the project and late finish date ~~represents~~ the maximum ~~possible~~ time ~~that you have~~ to complete the project. ~~You can therefore calculate your maximum~~ float ~~by calculating~~ the difference between the ~~early~~ start ~~date~~ and the ~~late end date~~ and then ~~subtracting~~ the duration of ~~project from the result of that calculation. You calculate your minimum float time by deducting~~ the project ~~duration from the difference between your late start date and early finish date~~.		The maximum time to complete a project is the different between the early start date of the project and the late finish date. The maximum float can be calculated by subtracting the duration of the project to the maximum time to complete the project. And the minimum float is the difference between the late start and the early finish and then deducting the duration of the project.

	~~The~~ float estimates can be use ~~when planning your project schedule~~ but ~~you may have~~ to adjust ~~your float calculations~~ during the course of the project. ~~Some people calculate a~~ float for ~~each~~ section of the project ~~as well~~ as a total ~~float~~ for the project. ~~If one~~ phase of the project ~~takes longer than expected, you can~~ get things back on track by not ~~expending any~~ float ~~time during~~ the next phase. ~~However~~, in ~~some circumstances unexpected problems could arise that could delay~~ the ~~project no matter how well you manage your float time~~.		During the planning of the project these float estimates can be use but they will need to be adjust during the course of the project. The float can be calculated for a section of the project and as a total for the whole project. The float can be use in case a phase of the project gets delay there will be a possibility to get things back on track if there is not float spend in the next phase. The chances of unexpected situations are always possible, because of this other considerations should be made by the project manager in order to mitigate the risks.

	===Risk Mitigation===		===Risk Mitigation===

S150994: /* Critical path */

2016-09-23T15:20:05Z

Critical path

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	''Compares Planned with Actual:'' Throughout a project, the PM can identify tasks that have already been completed, the predicted remaining duration for tasks in progress, and any planned changes to future task durations. The result will be an always updated schedule which, when displayed against the original project timeline, will provide a visual way of comparing planned with actual progress.<ref name=CP/>		''Compares Planned with Actual:'' Throughout a project, the PM can identify tasks that have already been completed, the predicted remaining duration for tasks in progress, and any planned changes to future task durations. The result will be an always updated schedule which, when displayed against the original project timeline, will provide a visual way of comparing planned with actual progress.<ref name=CP/>

			Usually all the Gantt softwares include an option to show the critical path on the chart.

	===Float===		===Float===

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2016-09-23T15:17:41Z

Lead and Lag time

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	Suppose you have to paint a newly constructed room. So the first activity would be applying the primer coating and then you will go for the final painting. However, after applying the primer coating, you must give it some time to dry properly. Once the primer coating dries, you can start final painting. The time given for coating to dry itself is called the lag time.<ref name=LL/>		Suppose you have to paint a newly constructed room. So the first activity would be applying the primer coating and then you will go for the final painting. However, after applying the primer coating, you must give it some time to dry properly. Once the primer coating dries, you can start final painting. The time given for coating to dry itself is called the lag time.<ref name=LL/>

	Adding lead time to a task, the work on ~~that~~ task ~~overlaps~~ work on its predecessor. Adding lag time, delays the start time of the successor task.		Adding lead time to a task, makes the work on the task overlap the work on its predecessor. Adding lag time, delays the start time of the successor task.

	===Critical path===		===Critical path===

S150994: /* Lead and Lag time */

2016-09-23T15:16:42Z

Lead and Lag time

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	Suppose you have to paint a newly constructed room. So the first activity would be applying the primer coating and then you will go for the final painting. However, after applying the primer coating, you must give it some time to dry properly. Once the primer coating dries, you can start final painting. The time given for coating to dry itself is called the lag time.<ref name=LL/>		Suppose you have to paint a newly constructed room. So the first activity would be applying the primer coating and then you will go for the final painting. However, after applying the primer coating, you must give it some time to dry properly. Once the primer coating dries, you can start final painting. The time given for coating to dry itself is called the lag time.<ref name=LL/>

			Adding lead time to a task, the work on that task overlaps work on its predecessor. Adding lag time, delays the start time of the successor task.

	===Critical path===		===Critical path===

S150994: /* Lead and Lag time */

2016-09-23T15:12:23Z

Lead and Lag time

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	[[File:Lagtime.jpg\|200px\|thumb\|left\|Figure 6: Lag time - Source: https://pmstudycircle.com/2013/02/lead-time-and-lag-time-in-project-scheduling-network-diagram/]]''''Lag time:''' When first activity completes, if there is then a delay or wait period before the second activity starts, this is called lag and the delay is known as the Lag Time ([[Figure 6)]]. Lag Time is the delay between the first and second activity.<ref name=LL/> Lag can be found on all activity relationship types.		[[File:Lagtime.jpg\|200px\|thumb\|left\|Figure 6: Lag time - Source: https://pmstudycircle.com/2013/02/lead-time-and-lag-time-in-project-scheduling-network-diagram/]]''''Lag time:''' When first activity completes, if there is then a delay or wait period before the second activity starts, this is called lag and the delay is known as the Lag Time ([[Figure 6]]). Lag Time is the delay between the first and second activity.<ref name=LL/> Lag can be found on all activity relationship types.

	For example, the time duration for the first activity is 3 days, and for the second activity it is 2 days. After completing the first activity you wait for one day, and then you start second activity.		For example, the time duration for the first activity is 3 days, and for the second activity it is 2 days. After completing the first activity you wait for one day, and then you start second activity.