Mohan Siribaddana
Basic Member
Posts:10
 | | 04 Jun 2009 08:50 AM |
 Quote Reply
| Hello,
Can any one explain, Activity Type -Level Of Effort. In other words, on what construction scenarios this type of activity is encountered? | | |
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swissvalian
New Member
Posts:1
| | 04 Jun 2009 04:58 PM |
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| One example could be a Project Clerk who is assigned to the project but not tied to any specific activity in the schedule. The clerk is doing any number of project-related tasks but in a support role. That activity would be a Level Of Effort task - it accounts for the resource and the cost, but the work does not affect the progress of the project itself so it does not drive any other activities. | | | |
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S Mike
New Member
Posts:2
| | 05 Jun 2009 02:40 AM |
QuoteReply
| Hello,
Thanks for explaining it. In which WBS is this activity defined? We have some meetings to discuss project progress and other project related issues. Where is the recommended location for this.
Thank you | | | |
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Mohan Siribaddana
Basic Member
Posts:10
| | 05 Jun 2009 09:58 AM |
QuoteReply
| Hello Swissvalian,
Thank you for your explanation, however, I have noted (as per the Primavera Reference Guide) the " Level of Effort" type activity is defined as:
The Level of Activity Type is selected to indicate that the particular activity's duration is dependent on its predecessor and /or successor activities. Then how come according to your explanation that activity has no bearing on the project progress?. I shall appreciate your explanation.
Regards
Mohan | | | |
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Mohan Siribaddana
Basic Member
Posts:10
| | 05 Jun 2009 09:58 AM |
QuoteReply
| Hello Swissvalian,
Thank you for your explanation, however, I have noted (as per the Primavera Reference Guide) the " Level of Effort" type activity is defined as:
The Level of Activity Type is selected to indicate that the particular activity's duration is dependent on its predecessor and /or successor activities. Then how come according to your explanation that activity has no bearing on the project progress?. I shall appreciate your explanation.
Regards
Mohan | | | |
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Mohan Siribaddana
Basic Member
Posts:10
| | 05 Jun 2009 09:58 AM |
QuoteReply
| Hello Swissvalian,
Thank you for your explanation, however, I have noted (as per the Primavera Reference Guide) the " Level of Effort" type activity is defined as:
The Level of Activity Type is selected to indicate that the particular activity's duration is dependent on its predecessor and /or successor activities. Then how come according to your explanation that activity has no bearing on the project progress?. I shall appreciate your explanation.
Regards
Mohan | | | |
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faisal
Posts:386
| | 09 Jun 2009 01:44 AM |
QuoteReply
| Hi Mohan,
Basically a Level of Effort (or LoE) task is generally like any other task in your schedule, where it will possess following properties:
1. LoE tasks cannot be open ended (that must have atleast one predecessor and successor) for them to be operational/ meaningful (Remember, you should not have any open ended tasks in your schedule apart from Project Start and Finish milestones).
2. LoE tasks DO NOT drive any other tasks and are driven by other tasks themselves. Hence, their durations are always moving according to their driving activities. This should not be confused with the fact that sometimes LoE tasks can even show on Critical Path of a project, they still do not drive other critical tasks.
3. As for the location within a particular WBS, I don't believe there is any "hard & fast" rule there but generally its better to keep them under a separate WBS so they are segregated from the rest of the planned tasks (For eg, if you are preparing a Construction program, the LoE task relating to lets say Construction Management should be under a separate sub-WBS level within the overall Construction WBS).
What Swissvalian is trying to emphasise on is the fact that LoE tasks do not drive any other tasks and infact their duration gets driven by other tasks, hence not casting any impact on the overall duration of the program.
Hope this helps you in your inquiry.
Cheers,
Faisal. | | | |
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Mohan Siribaddana
Basic Member
Posts:10
| | 13 Jun 2009 12:48 PM |
QuoteReply
| Hi Faisal,
Thank you for your kind reply. Now I understand the how LOE activity is scheduled.
Similarly, I would like if you kindly explain, how resource dependent and task dependent activities behave.
My question, how you should start scheduling? Should I schedule the project assuming task dependent, and later you change individual activities based on the resource type.
Other question is, when we do the resource leveling, will the type of activity and the activity duration type have bearing on the final schedule?
I shall appreciate your kind explanation, as I am new to Primavera?
Thanks
Regards
Mohan | | | |
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Mohan Siribaddana
Basic Member
Posts:10
| | 13 Jun 2009 12:56 PM |
QuoteReply
| Dear Faisal,
First of all I thank you for your detailed explanation of the activity type LOE. Since, I am new to Primavera, will you kindly explain the following:
1. When scheduling a project, initially, should we schedule the project based on activity type- Task oriented?. Later you change the individual activity such as resource dependent, and others.
2. When you do the resources leveling, will the activity type and duration type affect the final schedule?
What is your experience and explanation. If you have any useful guidelines or explanations, will you be able share with me?
My e-mail is : 31mohan@gmail.com
Best regards
Mohan | | | |
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mize
Posts:386
| | 28 Apr 2010 03:31 PM |
QuoteReply
| There are several methods for assigning relationships. Use the Activity Network to visualize the flow of logic as you link activities, or use the Gantt Chart to view relationships according to time. You can also use the Relationships tab in Activity Details to assign relationships to activities in the same project or in other projects in the EPS. But, anybody knows an easier way to assign relationships? Where are the links button of P3? any tips?
mpd.abener@gmail.com | | | |
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mdoss@emerald
Basic Member
Posts:29
| | 28 Apr 2010 07:36 PM |
QuoteReply
| Mohan,
Level of Effort:
Example:
For how many days/weeks/months would you need a Project Manager on a project? You cannot answer with an absolute number of days. You can only answer "From the beginning of the project to the end, irespecitve of how many ever days/weeks/months it takes". This is a case where you would use LoE.
Here you would define an activity, say, "Project Management", and the predecessor would be "Start Project"; the successor would be "End Project" and the activity type would be Level of Effort. So, if the "End Project" date changes, the duration of the "Project Management" activity would automagically change without you having to remember to go and change it.
Explanation:
"Activity Type" is a field that helps you determine the duration of an activity.
If the Activity Type is a milestone, Duration is zero.
If it is LoE, the duration is the time between the predecessor and successor and will be automatically recalculated when one or both change.
If it is "WBS Summary", duration is from the start date of that WBS element to the finish date of that WBS element. This includes this element's sub-nodes too.
If it is "Task Dependent" or "Resource Dependent" then, the duration is controlled by manual entry and/or the combination of "Duration Type" and "Calendar"
Task Dependent & Resource Dependent:
These two entries determine which calendar the activity will use to determine duration. The choices are Activity Calendar & resource Calendar.
Imagine the curing of concrete - this should work on a 24x7 calendar and will not take more or fewer days depending on how many resources are assigned to it. So, this activity should be "task dependent".
Imagine digging a hole - let's say it takes 2 days and that you need two guys. Te problem is that Guy 1 is available on Monday and Tue this week, but Guy 2 is available only on Tue and wed this week.
Now you should make the activity "Resource Dependent" because you would have mentioned in the Guy 1 and Guy 2 calendar that they are available as I mentioned.
So, now this two day activity will actually take three days to finish because Guy 1 works two days (Mon-Tue) and Guy 2 works two days (Tue and Wed), so the whole activity goes Mon-Tue-Wed, which is three days duration.
This is what "Task Dependent" and "Resource Dependent" do.
Cheers By the way, I would sincerely recommend that you take a Primavera course (102) because it will really help you understand some basic concepts and foundation. People here may not always be able to spare enough time to give detailed explanations of basic concepts. | | | |
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mdoss@emerald
Basic Member
Posts:29
| | 28 Apr 2010 07:45 PM |
QuoteReply
| Posted By on 28 Apr 2010 03:31 PM
But, anybody knows an easier way to assign relationships? Where are the links button of P3? any tips?
Mize, click on the first activity you want to start linking from, then CTRL-Click each of the successors in order, thenright-Click and choose "Link Activities". For example, if A drives B drives E drives Z, Click on A, CTRL-Click on B, E and Z in that order, Right-click and choose "Link Activities". Cheers | | | |
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mize
Posts:386
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