Top Down estimating



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    I would go with what is listed in AHPP most reliable source.

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    Kurt Fanderclai

    Neither Top Down nor Bottom Up is necessarily tied to a particular breakdown of phases by percentage.  Look at AHPP (15th) page 970 to help understand these estimating concepts.



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    Fernando Mingo Jozami



    BS uses those % as examples. If you look closely they share a same pattern. According to the AHPP these % are mere assumptions. What you can clearly extract from the mock questions is that the largest chunk of budget typically is assigned to CD. Bidding takes a little and CA a bit more but not a lot. SD and DD progress until they reach the peak with CD.

    This order is common in real life but the % are not fixed.

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