Corrosion rate measurements in steel sheet pile walls in a marine environment

The tolerances of steel sheet thicknesses - usually in the order of ±6% - are often neglected when investigating the remaining thickness in steel sheet piles. A simple calculation model shows that the sheet pile must be almost 50 years of age before an accurate estimation on the corrosion rate can be made, considering the tolerances, if the true original sheet pile thickness is not known.