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Thread: Critical path breaksup

  1. #1
    Join Date
    Feb 2012
    Posts
    2

    Critical path breaksup

    Hello MVPs,

    A challenging problem, for me atleast.

    To put it in simple terms:-

    --- 10 tasks all linked to FS, 5 day duration, 1 resource, Standard calendar & Base calendar (THG_Cal-7 in file) of M-F 5d x 8hrs
    --- All activities in Red critical path, so far so good, please see attached file.

    --- Once I change the calendar of Act-5 in the middle to Cal-2 (20hr x 7d), the critical path breaks up!

    My querries are:-
    1. How does MSP calculates critical path, based on Project Calender, Elapsed time, Task calender?
    2. Is it possible in MSp to allocate calenders to logical links like Primavera P6 or other scheduling software
    3. Why MSP calculates Total slack as 6days for Act-5, which means based on Task calender not Project calender?
    4. Lastly Whats the wayout to indicate correct critical path incase your programme has >1000 activities?

    Your comments would be much appreciated.

    Cheers!



    Calenders.zip

  2. #2
    Join Date
    Dec 2007
    Posts
    1,736

    Re: Critical path breaksup

    I think that if you have project set to show "multiple critical paths" (tools menu/options/calculation tab) then any chain that is dangling will show up as critical. If not, then only the longest chain will show as critical. You can change the setting for the option called "Calculate Multiple Critical Paths" on the Calculation tab of the Tools | Options dialog.

  3. #3
    Join Date
    Feb 2012
    Posts
    2

    Re: Critical path breaksup

    Thanks James,

    Unfortunately it doesn't work even after checking "Calculate Multiple Critical Paths". I believe the problem is with calculation of 'Slack', which I am not sure how MSP calculates.

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