The Construction Warehouse is the heart of every construction company. It serves as a central storage area for building materials, machinery, vehicles, and equipment. At the same time, it functions as an internal service unit to support the company’s own construction sites.
His main responsibilities include:
- Timely delivery of materials and machinery
- Maintenance and Repair of the Vehicle and Machinery Fleet
- Logistical Coordination of Shipments
- Purchasing Replacement Parts
The municipal maintenance yard operates as an auxiliary cost center, and the fees it charges are intended to cover the costs incurred, without generating a profit or a loss.
In short: Reducing search and downtime directly lowers the overhead costs of every active construction site.
➡️ Where does the 5S method come from? It was developed by Taiichi Ohno, former production manager at the Japanese company Toyota. The method originated in lean management and has proven effective worldwide in manufacturing companies. And thus, it is also effective for processes at construction companies’ yards.
An Overview of the 5S Method
The 5S method helps optimize workstations, storage areas, and construction yard operations. 5S stands for the following terms, which originate from Japanese:
| S | Term (Japanese) | Meaning |
|---|---|---|
| 1 | Sorting (Seiri) | Discard what doesn’t belong there |
| 2 | Organize (Seiton) | Every item has its designated place |
| 3 | Cleaning (Seiso) | Cleaning Is Inspection |
| 4 | Standardize (Seiketsu) | Establish rules and make them visible |
| 5 | Self-Discipline (Shitsuke) | Living the Culture |
1. Sorting: Remove anything that doesn’t belong there
Before anything is reorganized, a thorough purge takes place. At the maintenance yard, this means that all tools, machines, materials, and spare parts are evaluated based on how often they are used and their condition.
- Disposal: Defective equipment, obsolete materials, and scrap are disposed of. No “we’ll fix that sometime.”
- Reduce: Only necessary materials are kept in stock.
- Red-Sticker Method: In cases where it is unclear what to do, a red sticker is placed on the device or material. After a set period of time, a final decision is made: keep it or dispose of it. This prevents the creation of an endless temporary storage area. (Tip: This works at home in the basement, too!)
2. Organize: Every item has its own designated place
“Where can I find the cordless hammer drill?” “Where’s the attachment for the excavator?” If this is a daily routine at the construction yard, something’s wrong. Now, every remaining item will have a fixed, logical, and ergonomically sound place.
- Shadow Boards: Tool boards with outline drawings immediately show which tool is missing. You can see at a glance what’s out of place.
- Clearly Defined Zones: Floor markings separate walking, driving, and storage areas. This reduces the risk of accidents and speeds up operations.
- Short distances: Everything needed on a daily basis is within easy reach. Specialized equipment that’s used infrequently is stored further back. This minimizes walking time during every storage and picking operation.
- Software Support: Software that automatically assigns dynamic storage locations is also acceptable. It is important that all transactions are processed through the software.
3. Cleaning: Cleaning Is Inspection
Cleaning at the municipal maintenance yard is not just a cleaning task, but an active form of quality assurance. After all, this is preventive maintenance.
- Cleaning Schedules: There are set schedules that specify who cleans which areas and when.
- Preventive Maintenance: When cleaning machines and vehicles, signs of wear, cracks, or leaks are detected early on. A leaking hydraulic line on a mini-excavator is noticed during the morning cleaning routine and can be repaired immediately at the shop.
4. Standardize: Establish rules and make them visible
To ensure that the first three S’s don’t become obsolete after two weeks, clear standards need to be established.
- Visual aids: Color-coding for categories and clear labels for shelves and containers.
- Checklists: Regular 5S audits document the current status and quickly identify deviations.
- Process Maps: Clear responsibilities and procedures for maintenance and organization. Everyone knows who is responsible for what.
- 5S Friday: A set day for reviewing our own standards. This continuously improves the quality of the maintenance yard and leads to fewer follow-up questions, maintenance issues, and conflicts during the stressful workweek.
5. Self-Discipline: Living the Culture
The final step is crucial to the continuous improvement process (CIP): Employees take responsibility for maintaining the standards.
- Training & Involvement: Regular training sessions and involving the workforce in the process design promote acceptance.
- Continuous Improvement: Through regular communication within the maintenance yard team, processes are optimized and discipline is maintained.
- Setting an Example: Managers at the municipal maintenance yard lead by example in following the 5S principles. This fosters a culture that foremen and other colleagues can use as a guide.
Conclusion
The 5S method is not a one-time project, but rather an ongoing process. For public works yard employees, it provides the tools to transform the yard from a disorganized collection point into a professional warehouse.
The maintenance yard is transforming from a cost factor into a key success factor for the construction site. By reducing search times and downtime, it actively cuts overhead costs and ensures a smooth workflow. It also provides valuable support to colleagues on the construction site, where there are already plenty of challenges. When will you start implementing 5S?
Peter Prütting ist Experte für werteorientierte und digitale Unternehmensentwicklung. Mit über 15 Jahren Vertriebserfahrung aus den Perspektiven Großhandel, Hersteller und E-Marktplatz nimmt er einen ganzheitlichen Blick ein. Seine Weggefährten schätzen ihn als kundenzentrierte und fokussierte Führungskraft, der Teams durch die digitale Veränderung führt. Abseits des Berufsalltags tankt er Energie beim Mountainbiken.
FAQ – Frequently asked questions
The maintenance yard serves as the central hub and storage area for materials, machinery, and vehicles. As an internal service unit, it ensures that resources are delivered to construction sites on time. Efficient organization reduces search and downtime, which lowers overhead costs.
A municipal maintenance yard operates as an auxiliary cost center. The goal is to cover the costs incurred by charging fees, without generating a profit or a loss. Improving efficiency through methods such as 5S transforms the municipal maintenance yard from a mere cost center into a success factor.
5S stands for five Japanese terms that describe a process for optimizing workstations, storage areas, and workflows: #S1 Sorting (Seiri), #S2 Organizing (Seiton), #S3 Cleaning (Seiso), #S4Standardizing (Seiketsu), #S5 Self-Discipline (Shitsuke)
Taiichi Ohno, the former production manager at the Japanese company Toyota, is credited with developing this method. The method originated in lean management and has proven effective in manufacturing companies around the world. It can also be applied to construction companies’ job sites.
A thorough inventory of all tools, machines, and materials will be conducted. These will be evaluated based on frequency of use and condition. The following methods are helpful in this process: disposal, reduction, and the “red sticker” method.
Every remaining item is assigned a fixed, logical, and ergonomically sound location. The following measures help achieve this: shadow boards, clearly defined zones, short distances, and software support.
Cleaning serves as an active quality assurance and inspection measure here. When cleaning machines and vehicles, signs of wear, cracks, or leaks become apparent early on. For example, a leaking hydraulic line on a mini-excavator can be detected and repaired early. This saves you the trouble of having to perform costly repairs on the job site.
The insights gained are translated into permanent standards: visual aids, checklists, process maps, and 5S Day.
Employees must take responsibility for adhering to the standards. This is achieved through: training, involvement, continuous improvement (CI), and leading by example
No, 5S is not a one-time project, but rather a continuous improvement process (CIP). It requires constant maintenance and adjustment to ensure the depo is operated professionally on an ongoing basis.
It prevents items that are still under consideration from becoming permanently stored in a holding area. The set deadline ensures that a quick and final decision is made.
Since the municipal maintenance yard operates as an auxiliary cost center, its success can be measured indirectly by the reduction in overhead costs:
– Search times: Measure and compare search times before and after implementation.
– Downtime: Document the number and duration of machine breakdowns.
– Material waste: Analyze the costs of consumables. Experience shows that these costs decrease by up to 20% compared to the period before the 5S method was implemented.
– Audit results: Monitor regular 5S audit results over time. These show whether standards are being followed.
5S is a tool within Lean Management. Lean Management is the overarching philosophy for reducing waste. 5S is a concrete, step-by-step method for organizing workplaces. Other Lean tools include Value Stream Mapping, Kanban, and Poka-Yoke. 5S often serves as the foundation for further Lean initiatives, as a tidy, standardized workplace is a prerequisite for further optimization.
Sources
- Wikipedia, Toyota Production System, and Lean Management: https://de.wikipedia.org/wiki/Toyota-Produktionssystem
- Toyota, Lean Management, and 5S: https://www.toyotaforklift.com/resource-library/blog/toyota-solutions/toyota-lean-management-and-5s
