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(Solved): 2. The figure below shows an embankment dam cross-section The crest is at elevation is 2099m, and ...
2. The figure below shows an embankment dam cross-section The crest is at elevation is 2099 m, and the embankment base at elevation 2033 m. The foundation is mainly made of soft(compressible) mudstone of 9 m thickness underlain with firm mudstone of 20 m. The embankment materials as shown are as given in the table2a, while the characteristics of the compressible foundation materials is in table 2 b. Table2a: Embankment materials Table 2 b: Compressible Foundation material Determine the crest construction level to ensure required freeboard after settlement and consolidation.
Expert Answer
The steps to determine the required crest construction level are:
Determine the estimated settlement of the dam. This includes:
Initial settlement due to placing the embankment fill. We can estimate this from the thickness of the compressible foundation layers and their modulus values.