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April 18, 2007


As a full time project manager I can really appreciate the power of this tool and thank you for providing a template for us to use.

Dear sir,what I need was an S-curve made for road construction project,as you know it has 8 or 9 different construction activity starting from clearing and grubing ,excavation of cut and fill,subgrade formation,subbase layer,and base course layers,finally asphalt wearing course.And each activity will have amount of volume or square meter with the unit rate .Then therewill be a project amount total of 284,290,260Ethiopioan Br.therefore as a general guidance I think I need one curve for planned activities for a total of 42 months and another curve for actual work executed on each month.Also I need a cash flow,therefore please help me in getting the idea.Also I need a soft ware for scheduling and I tried to download the one you have sent but I couldn't to overload even the demo which was meant for two days demo.But if there is a possiblity to buy at your reach please help me to by the program called Goldenseal.
Thankyou,please reply me.

I am doing some research into a definition and formula for "burn rate" with respect to projects and have found two conflicting answers. One states that "burn rate" is equal to the Earned Value calculation for CPI (Cost Performance Index). The other states that "burn rate" is the inverse of CPI. Can you provide your opinion on this?

Thank you.

Richard A. McBride, PMP, MCSE

Hi Richard

Thanks for your enquiry. The discrepancies arise from a difference in what is being measured. This post was discussing how we can track budget, and I was calling the rate of budget consumption a “burn rate”. However, it gets confusing because agile project often track Stories remaining via burn down graphs and also Estimated Time remaining via burn down graphs. So depending on what you are measuring your formulae may well be inverted from what you expect.

To tie it back to Earned Value terms: Earned Value (EV) = Features delivered, Schedule Performance Index (SPI) = Completed Features / Planned Features for this time, Cost Performance Index (CPI) = Planned Costs / Actual Costs for this time.

I hope this helps, thanks for reading and commenting

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