About 'Resource Calender' as a input to 'Estimate Activity Duration'

Vijay_PMP's picture

Hi,

In PMBOK, 5th edition, Page#143, Project management Overview, it is shown that, 'Resource calender' is an input to 'estimate activity duration'. I haven't seen this as an output for any of the processes which occur prior to 'estimate activity duration' like 'estimate activity resources','sequence activities' etc.
Can a particular task or a process can become input to a certain process, even though it is not an output of any other related process?
Please help me in understanding this.
Thanks,
Vijay_PMP

admin's picture

Why Not ?

Resource calendar is required for scheduling. It may not be prepared as part of any project management process. Unless you know the resource availability you will not be able to develop fool proof schedule.

saketbansal's picture

You are right in a way that resource calendar is not yet prepared if you look at the sequence, but you are missing one thing. These processes are performed iteratively, multiple times in a project. And it is not necessary to follow the sequence of the process as given in PMBOK .

Resource Calendar comes from
• Acquire Project Team
• Conduct Procurements
The Acquire Project team has a pre assignment as tool and technique, which mean we do have resource already assigned to the project in many cases or it also mean if not all some of the resources are pre assigned, so if that happen that comes in the beginning only.

Does this make sense? :-)

You may explore our video of resource smoothing and resource level here
https://www.youtube.com/watch?v=2cN0xcjZEI4

Vijay_PMP's picture

Agreed! Now its clear that, its not mandatory to have something in sequence when it comes to Inputs and Outputs from sequencing processes.Yup! Makes sense. Thanks a bunch for helping me out on this.