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<br />Lesson 5 <br /> <br /> <br />5.11 Road leading to the failure. <br />(note the skid marks). <br /> <br /> <br />5.13 A section of culvert that washed <br />downstream. <br /> <br />Culvert Failures - Participant Workbook <br /> <br />nl <br />J <br />,... <br /> <br /> <br />.1 <br />u <br /> <br />~ <br /> <br />... <br />U <br />I] <br />,) <br />8 <br />'il <br />o <br />a <br />u <br />n <br />I <br />n <br />a <br />I <br />I <br />I <br /> <br />5.12 The vehicle that made the marks. <br /> <br /> <br />5.14 Bedding material (note pencil). <br /> <br />The culvert was not overtopped during the flood. The two occupants of the vehicle <br />were not seriously injured. However, when the vehicle went into the channel, water did <br />submerge it, and the passenger had to drag the driver out to prevent him from <br />drowning. During construction, the contractor, with concurrence with the construction <br />engineer, used the gravel for bedding of the pipe because of muck was present. <br /> <br />5-10 <br /> <br />- <br />