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Unformatted text preview: 53:030 SOIL MECHANICS Department of Civil & Environmental Engineering The University of Iowa Fall Semester 2002 Midterm Exam #2, 1 hour 3 questions, 100 points Question #1: (45 points) Not so long ago, the city of Köldengrad, Siberia built their library on permafrost soil as shown in Figure 1. As long as the soil remains frozen, the settlements associated with the structural load on the soil are negligible. With the gradual onset of global warming, however, the city engineer is concerned that the structural bearing loads on the thawing soil will cause excessive settlements. a) Given the properties measured for the thawed soil, which is normally consolidated, estimate the eventual consolidation settlements that will occur beneath the center of the library which is built on a circular flexible slab foundation of radius 10 m. b) Using a one-dimensional consolidation model, estimate how long would it take for 60 % of the primary consolidations to occur if the soil were to thaw instantaneously. instantaneously....
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This note was uploaded on 11/10/2010 for the course CIVIL 53:30 taught by Professor Swan during the Fall '09 term at University of Iowa.
- Fall '09
- Environmental Engineering