Recommended corrosion loss values according to EN 1993-5
Table 4.1 - Recommended values for corrosion loss of bearing pile and sheet pile thickness in soils with or without groundwater [mm]
Required design service life | 5 years | 25 years | 50 years | 75 years | 100 years |
Undisturbed natural soils (sands, clays, shales) | 0,00 | 0,30 | 0,60 | 0,90 | 1,20 |
Polluted natural soils and industrial sites | 0,15 | 0,75 | 1,50 | 2,25 | 3,00 |
Aggressive natural soils (swamps, marshes, reed beds) | 0,20 | 1,00 | 1,75 | 2,50 | 3,25 |
Non-cohesive and non-aggressive fills (clays, marl, shales, sands) | 0,18 | 0,70 | 1,20 | 1,70 | 2,20 |
Non-cohesive and aggressive fills (ashes, slags) | 0,50 | 2,00 | 3,25 | 4,50 | 5,75 |
NOTES 1. Corrosion losses in compacted fills are lower than in non-compacted ones. For compacted fills, values from this table should be divided by two. 2. Values for 5 and 25 years are based on measurements; other values are extrapolated. | |||||
Table 4.2 - Recommended values of corrosion loss in wall thickness of piles and sheet piles in fresh or sea water [mm]
Required design service life | 5 years | 25 years | 50 years | 75 years | 100 years |
Ordinary fresh water (rivers, ship canals…) in high-risk zones (water level) | 0,15 | 0,55 | 0,90 | 1,15 | 1,40 |
Heavily polluted fresh water (drains, industrial waters…) in high-risk zones (water level) | 0,30 | 1,30 | 2,30 | 3,30 | 4,30 |
Seawater in temperate climate zones in high-risk zones (water level and splash zone) | 0,55 | 1,90 | 3,75 | 5,60 | 7,50 |
Seawater in temperate climate zones in permanently submerged zones or in tidal zones | 0,25 | 0,90 | 1,75 | 2,60 | 3,50 |
NOTES 1. The highest corrosion loss usually occurs in the splash zone or in the tidal zone in waters affected by tidal phenomena. However, in many practical cases, the highest stress arises in permanently submerged areas. 2. Values for 5 and 25 years are based on measurements; other values are extrapolated. | |||||