In the commercial construction industry, there is a common LEAN method used called pull planning. “A Lean Method is a way of optimizing the people, resources, effort, and energy of your organization toward creating value for the customer” (Lynn, 2020). “Pull planning is a technique that is used as part of the Last Planner System to develop a coordinated plan for one phase of a project” (Pull Planning). So far it has been used on every job I have worked on. The way that pull planning works is that all the foreman, or “Last Planner,” of each construction crew (plumbing, electrical, mechanical, general contractor, painters, etc.) that’s needed for that specific phase is called to a meeting. A goal is established which defines the very last thing that needs to happen for the phase to be completed and the date that the phase must be completed by. A plan is made by working backwards from the defined goal date which is usually facilitated by a construction management team member. They start at the end date and continuously ask the foreman, or last planners, what needs to happen in order for this to get done? The subcontractors (foreman/last planners) offer their information and give their word that the work will be done by the date that they commit to. The foreman not only gives their word that the work can and will be done by a certain day, but they are making a social commitment. Pull planning only works if everyone is there at the same time as to not let anything out and consider all aspects. After the plan is made, there are meetings to go over what is done and what is not done, so if the work is not done by the time originally committed, the foreman must explain why before every foreman at the meeting.
The Lean Method described above is effective because it goes right to the source (the last planners), asks what they need to complete their part of the job, and then outlines a plan which includes all subcontractors for the phase. Everyone is on the same page. But is that the only reason why it is so effective? According to Lesson 7: Power and Influence, the social aspect may have a lot to do with it. We learn that most people tend to follow through with commitments they give to authority figures (Hamel, 2021). The Construction Management team is there to facilitate but also has legitimate power as defined by the lesson (Reward Power could also be argued), as they control when subcontractors get paid; they only get paid for the work they complete, which is reviewed by the CM every month (Hamel, 2021). Commitment and Consistency and Social Proof as defined by the lesson can be contributors as to why pull planning is a great method to implement on a project. Commitment and Consistency has to do with a person verbally committing to an idea (Hamel, 2021). The sub will commit to the date not only verbally, but in front of his peers. The meetings following the initial one reinforce the dates previously established and the subcontractors repeat that the date is still good. This happens at least once a week but depends on the project (could be more frequent). The repetition from going over the dates at every meeting and recommitting to them shows the consistency part of this principle. The Social Proof principle says that “if others are doing it, it must be a good thing” (Hamel, 2021). The subcontractors would not want to be the only ones behind, so that when the facilitator asks if their part is done, they obviously want to say yes like everyone else.
In conclusion, pull planning largely works due to the social aspect of the nature of this lean method and has proved effective on many projects.
Sources:
Hamel, R. (n.d.). Lesson 14: Ethics and Leadership, 2021
Lynn, Rachaelle. “Lean Methodology.” Planview, Planview, 18 June 2020.
“Pull Planning.” Lean Consulting, Lean Construction Institute, 2021.