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Hi All,
i have a project has five WBS and each one of them has a duration and cost, and i need to determine weigth factor for each wbs based on time and cost, is there any method to do that, or there is another method to determine the weight factor?
best,
muataz
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Hi,
you are right, but my method is a simple sample for buttom up approach. the best solution depend on Create S.W.U for Project.
B/R
Cost is not a reliable method of reporting progress.
Your split of 70 / 30 is too broad an average when in some task the split is 20 / 80 and others 90 / 10.
If you are going to apply this method then you must allocate the correct split to each task.
Also there is a 3rd split of OH&P which is not progress related at all.
Dear moutaz
Hi,
the best way for create weight factors as following items:
1- Cost ( 70 % share)
2- Time ( 30 % share)
Total weight= 70% w.cost+ 30% w.Time
Also you need determain the S.W.U ( Specific Work Units) for in the WBS units.
Best Regards
Rashidi
the case i have is not construction and both time and cost are preferable to be used, my question is how to use both?
best,
muataz
Hi Moutaz
Weightage only becomes a problem when a planned task s a combination of trades and/or location ie:
FRC Suspended slabs : 20-10-17 > 15-12-17 > 40d
When this task is spread over - say - 5 slabs then you have both a time and cost weithage problem.
This is because planners are lazy and lack pride in their profession.
It is just as easy to plan the work in detail ie:
Level 1
Slab Form > Rebar > Edge Forms > Pour Concrete
Level 2
Slab Form > Rebar > Edge Forms > Pour Concrete
Etc
Then you just report % complete in either time or volume on each task.
Best regards
Mike T.
Hi Moutaz,
To Calulate weightage you can do it by either
If the Project is only Construction then Manhours / Activity would be good.
If the Project is Engineering, Procurement and Construction then it would be better to use Manhours / Deliverable, Cost / Item and Manhours / Activity to measure each WBS.
In an Overall summary ou can use Cost or the weightage given by Client.
Regards
Jithin
Email: PPadmin@planningplanet.com
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