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What is Manhole Benching Construction Explained about?

The benching. -The bottom or invert portion of manhole. The bottom portion of the manhole is constructed in cement concrete. A semicircular or a U-shaped channel is generally constructed, and the sides are made to slope towards it, as shown in section A-A of Fig 2.5. The concreting is known as benching, and facilitates the entry of sewage into the main sewer. If the branch as well as the main sewer meets at the same level at the bottom of the manhole, channels connected with each other will have to be const

Author

Edwin Hwera

Language

EN