Dam construction across the world has recently acquired an accelerated pace as needs for water supply and renewable energy sources have increased in many countries. Many of these countries are located in areas where tropical residual soils are abundant. Unlike transported soils, residual soils originate from the in situ weathering and decomposition of the parent rock, which has not been transported from its original setting. The conditions present in humid and tropical climates provide the adequate moisture and temperature conditions to transform, through weathering processes, the underlying rocks into residual soils faster than they can be removed by erosion.

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