Environment & Ecology · Environmental Science
When two or more sewers of different sizes join in a manhole, how should they ideally be aligned?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1They can be aligned in any of the above ways
- 2Their bottoms (inverts) should be at the same level
- 3Their centres should be at the same level
- 4Their tops (crowns) should be at the same level✓
Correct answer
Their tops (crowns) should be at the same level
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