Service life is the period during which a building or component continues to function properly and meets the required standards, provided it is used and maintained correctly.
Service life is also known as the technical or structural lifespan. It refers to the time span during which a structure or material can perform its function without needing replacement.
How service life is determined
Service life depends on several factors:
- Material selection and quality of workmanship
- The loads the component is subjected to
- Climatic conditions (moisture, temperature, UV)
- The frequency and quality of maintenance
Standards often distinguish between different reference periods. An indicative breakdown:
| Component | Expected service life |
|---|---|
| Load-bearing structure / foundation | 50-100 years |
| Facade masonry | 50-75 years |
| Window frames and roofing | 25-40 years |
| Paintwork and sealant joints | 5-15 years |
Application
When designing and managing a building, service life is used to:
- Draw up maintenance schedules (long-term maintenance plans)
- Predict investment and replacement moments
- Calculate sustainability and life-cycle costs
A longer service life usually means lower annual costs but often requires a higher initial investment. Good maintenance significantly extends service life, while neglected maintenance shortens it.
Related terms
- Foundation
- Insulation
- Facade
- Maintenance
- Concrete
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