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<br />t <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />'I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />1 <br />I <br />I <br /> <br />LESSON 8 <br /> <br />Culvert Failures - Instructor's Manual <br /> <br />CASE STUDY I <br /> <br />Within the next twenty minutes, review the attached photographs, background material, <br />and <br /> <br />1. Establish the cause(s) of the failure. <br /> <br />2. Develop a way to prevent such failures in the future. <br /> <br />3. Select a spokesperson to summarize your findings to the "Chief Engineer." <br /> <br />5-5 <br />