hi navid,

the cpm scheduling 101: how primavera scheduling works blog post may help.

regards.

thank you for your knowledge sharing.

how p6 calculate early start & late start in order to calculate total float for each activity?
i think some of my activities have total float incorrectly and i don’t know why !
can you help me?

if they are on the critical path, how do you know they are not critical and need to be removed? seems like maybe you have your own definition of critical path.
you don’t remove activities from your critical path. if you have incorrectly linked an activity, and it shows up on your critical path, then correct the links. but accept that all activities on your critical path, are critical.

how to remove unnecessary activities in critical path, basically which are not critical activities ?

mary, this sounds a bit complex to be able to grasp and reply in a comment form. feel free to reach out to our office.

what do you suggest?

go ahead

go to group & sort

uncheck the dialogue box “hide if empty”

assign 世界杯时间比赛时间 to all activities as normal – i assume you’re resource-loading your schedule. go into filters and turn on the critical filter so only your critical path shows. then goto view->show on bottom ->resource usage profile and configure the graph to show your s-curve (cummulative curves).

yes of course – 0 float means it’s a critical activity based on the p6 criticality filter. try this. press f9 (schedule) click options, select longest path as the option to define critical activities.

the only approach i can take to generate critical path s-curve is to assign 世界杯时间比赛时间 to all activities on the critical path and use resource assignment weight to generate critical path s-curve. is there any other way?

kind regards
rephinus

not sure – turn off any filters you have on.

jyothi, it’s pretty apparent that you will have to revisit all remaining work and re-plan it to build a recovery schedule. look at your critical path and see if it makes sense. work with contacts in the field to see if you can get the schedule to accurately reflect how the work will be produced. talk to supervisors about the using the schedule daily – get support from management. it’s going to be a tough job, one that likely very frustrating. but the schedule is important.

due to many dependent activities and other conditions at site. schedules are not followed by the team as per the base plan.
there are so many delays in schedule.
kindly advice how to recover the delay by means of recovery plan / recovery schedule.

jyothi

rajaram,
it’s probably because the mandatory constraint is forcing an activity to a date earlier than the network logic – thus breaking the network logic. the result is negative float on the mandatory activity causing it to be critical.
it’s a general consensus not to use mandatory constraints on any project. as they break the network logic, the integrity of your project’s logic is gone….and only with good logic can you have / track / manage your critical path. with broken logic, the critical path is uncertain.
the proper approach is to use non-mandatory or soft constraints and to monitor their effect on total float.
hope that helps.

thanks alex! we aim to be uber helpful!
michael

thank you very much for your reply. i wasn’t sure about the duration while filtering the project by critical path.

hi marios,
put on the critical filter, and make sure you have grouping set to wbs. the duration at the very top is the duration of the critical path. to see the variance, you could create a baseline of your project before leveling. assign the baseline to the project. then, add a column to your view – “variance – bl project duration”. this will be the variance after leveling.
m

your lesson about critical path is really useful. but i have just one question. can the primavera programm calculate the duration of critical path or i have to do that manually. i cant find any command at p6. my definite target is to calculate the variance of critical path duration between the cp duration before and after levellling.

thanks in advance

over here https://www.plannertuts.com/article/critical-path-vs-longest-path/ i explain that the longest path is a critical path, but not all critical paths are the longest.

what is happening is that there are 2 ways to define what’s critical. yes, some activities on the longest path may not be considered critical by total float. thus, i recommend being aware that this is the case and being aware of the longest path.
m

in the figure attached with item 2, we find the items marked as in the longest path, are not critical. is it possible for activities in the longest path not to be critical?

using mutiple folat path can you say me how to show number of longest paths in the schedule that affect project completion date .