Section 25 A Pull Schedule

Manufacturing Corner on

Tuesday, November 29, 2022

 A Pull Schedule

Let's go back to the very simple schedule in Section 2. It says:

"If I start now (at hour zero), when will the last job stop?"

To turn it into a pull schedule, it should say:

"If all the jobs are required in 2 days (at hour 48), when do I need to start"

The answer , of course, is hour 12:

You can see that each job is dependant on the one after it, and time cascades upwards.

What if we now changed the question to:

"If all the jobs are required in 1 day (at hour 24), when do I need to start"

Change the "Jobs required at hour" from 48 to 24, and you will see that we would need to have started at hour -12, half a day ago. In this case the nature of the question changes, and reverts back to the push question:

"If I start now (at hour zero), when will the last job stop?"

What is needed is a schedule that will handle both push and pull logic, and apply the appropriate one.

Labels: Scheduling Excel Basic

Thanks for reading Section 25 A Pull Schedule. Please share...!