What Is Lean Construction?

General Contractors
Subcontractors
February 25, 2022

Lean construction methods were born out of processes used in the Toyota manufacturing facilities after World War II. The principles and techniques have been modified to meet the needs of construction project teams with great success. Projects using lean construction principles show improved quality, lower costs, and shorter schedules.

What is lean construction?

Lean construction is a team-oriented, collaborative approach to completing a construction project. It can be used successfully on projects of any type and size.

While not considered a construction business model, lean construction is a production management system that helps teams eliminate waste and deliver greater value to their clients. It started in manufacturing, with its birth in the Toyota Production System used in Toyota automotive manufacturing facilities after World War II. Only in the past few years has its success in construction been publicized.

Principals of lean construction

Not sure all the principles of lean manufacturing translate into the construction industry. In construction, every project is different and there are a number of environmental factors that can affect the outcome of a project. Manufacturing is a more controlled environment where the output is usually the same over time.

Some of the principles that do work in construction projects include identifying the owner’s values, eliminating waste, continuous planning, and improved communication.

Identifying owner’s value

Early in the project, the design team and contractors meet with the project owner to learn about the owner’s overall values and their needs and wants for the current project. These values, needs, and wants become the guiding principles for the project. All decisions are viewed through the owner’s eyes.

Contractors are brought on as early as possible so they can understand the owner’s perspective before design begins. The design team and the general contractor team collaborate to provide a quality design for the owner’s project.

Eliminating waste

On a construction project, waste can take many forms. It can include overproduction, unused inventory, construction defects, and the underutilizing or misusing of labor. Waste can lead to longer production times, lower profits, and lower quality projects. Any construction or design activities that don’t directly serve the owner’s values are seen as waste and are eliminated as much as possible.

Continuous planning

The construction team works together collaboratively to develop a project schedule that works for everyone. Team members are encouraged to think of new ways to perform their work to reduce waste and improve quality. The schedule is updated weekly with the input from all team members, and they work together to overcome obstacles to completion.

Improved communication

Communication can be difficult on large projects. The use of construction technology can help bridge the gap between meetings and between contractors. Project management software from PlanHub can be used to effectively communicate with team members and provide instant access to documents, drawings, and other information teams need to complete their work. Communication flows freely between team members, making the flow of information smoother and more efficient.

Benefits of lean construction

Achieve customer’s values

When all project team members are involved in the project from design to completion, all decisions are filtered through the lens of the customer’s values. Team members work together to ensure that the owner’s needs are met throughout the process.

Improved quality

With a focus on waste prevention, including construction defects, the result is improved quality of work. Subcontractors can focus on providing quality work when they are less worried about other issues, like schedule and costs.

Lower costs

Project teams can save money through less wasted work, defects, last-minute design changes, and construction delays. Using tools like BIM software and collaborative design can also help reduce costs.

Shorter schedule

Working together from the beginning allows teams to find new ways to work together and expedite production. Contractors can use pull planning, just-in-time deliveries, and thorough task planning and scheduling to reduce the time the project will take.

How to implement lean construction

There are a variety of tools teams can use to help implement lean construction principles to elevate construction business management.

Pull planning

Pull planning takes a traditional project scheduling process and makes it collaborative. It’s based on five key processes: collaborative programming, making ready, production planning, production management, and continuous improvement. Pull planning can be used to optimize the project schedule and save everyone time and money.

Just-in-time deliveries

Once the project schedule has been optimized, contractors can order materials on a just-in-time basis. This prevents stockpiling, saving time moving materials around the jobsite and making production more efficient.

BIM

Building information modeling (BIM) software allows the project team to build the project virtually before a shovel hits dirt. The software highlights problem areas and inconsistencies in the design, so the project team can address them proactively in the virtual world, where changes are much less expensive.

Prefabrication

This lean construction practice can significantly reduce the time required on-site to complete a project. Multiple scopes of work can be completed at the same time and be brought to the site for final assembly and connection. This method can be extremely beneficial on tight sites where there isn’t a lot of extra space for production and material storage.

Conclusion

Project teams that focus on the principles of lean construction will find their projects run smoother, have less conflicts, take less time, and that their customers are happy with the results. While implementing lean construction process principles isn’t complicated, it does take a mind shift to make the process work. Having the right contractors and subcontractors on your team, along with stellar general contractor software,  is the key to a great project. If you are a GC having trouble finding good subcontractors, PlanHub can help.

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