Load-duration Class
All references to EN 1995-1-1:2004+A2:2014.
Eurocode 5 requires that actions are assigned to a "Load-duration Class". This is aimed mainly at modifying the characteristic strength and moduli of elasticity values.
The Load-duration Classes depend on the accumulated duration of the characteristic load, as defined below:
| Class | Description |
|---|---|
| Permanent | More than 10 years (e.g. self-weight) |
| Long-term | 6 months to 10 years (e.g. storage loads) |
| Mid-term | 1 week to 6 months (e.g. imposed floor loads) |
| Short-term | Less than 1 week (e.g. snow) |
| Instantaneous | Instantaneous load (e.g. accidental loads) |
Please refer to Clause 2.3.1.2 for a detailed discussion.