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Weightage and EVM

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Fri, 2016-06-17 07:21
Sumesh Madhavan
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Joined: 17 Jun 2016
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Hi All,

Hereby writing to you regarding few queries i have on project planning. 

1) Is there any thumb rule for assigning weightage to the WBS/activities of construction project which is of varied nature like drawings, procurement, manufacturing etc and various packages like RCC, HVAC, FPS, Str,steel, elevators etc.

 How can we assign weightages and bring it to a common denominator.

What best method can be used to converge all these to get the % completion of overall project.

2) While monitoring the project , we take the EVM method which is basically tracking the performance of the project based on cost. But this method miss the schedule aspect, which does not account the activities on critical path or the complexity or duration of works.
So what is the alternative to monitor the project status, considering the duration, criticality (if it is critical path), resource required or complexity..?? 
The Earned value schedule is also only indicative derived from EVM.

Thanks and Regards

Sumesh M.

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Replies

Fri, 2016-06-17 08:28
#1
Tong Cong Tuan
User offline. Last seen 4 years 3 days ago. Offline
Joined: 27 Feb 2011
Posts: 30
Groups: Building Information Modelling, GPC Malaysia, GPC Qatar, Petro-Chem / Oil & Gas, TURNAROUND & SHUTDOWN (T/A & S/D)

Suppose you're working on a Lumpsum contract, and applying EVA method.

1) Weightage can be used are: Cost and Manhours. Generally, there is "mixed" style: Cost for Procurment, Manhours for Engineering, Construction, Comissioning, and using Cost for linking different phases(E-P-C), but also there is "separted" style: you generate 2 tables, one E-P-C using manhours, one E-P-C using cost. The "separted" style has more information, but many Owner will reject due to they don't want to have 2 different progress values for Project.

You can get Cost, and Manhours estimate from the quantity of work (from BOQ/MTO) x productivty, and x unit cost for cost.

 2) You're correct. EVA is just be "addition" not "replacement" for CPM Schedule.

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