Computer · Environmental Engineering
According to Marston's theory, the proportion of backfill load transmitted to a sewer pipe laid in a trench primarily depends on which of the following?
- 1Sewer pipeline gradient and structural material
- 2Depth of flow and inner diameter of the pipe
- 3Ratio of trench depth to width and characteristics of the filling material✓
- 4Self-cleaning velocity of sewage
Correct answer
Ratio of trench depth to width and characteristics of the filling material
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