Question

what is the significance of construction manhole along roadside

Answer 1

Manholes are masonry or RCC chambers which are constructed at suitable intervals along the sewer lines to provide access into them. 

The significance of constructing manholes:

i. They are useful for carrying out inspections and for cleaning and removing obstructions in the sewer line.

ii. They help to join sewers or change the direction or alignment of sewer.

iii. They help in the ventilation of sewage as they allow gases to escape through the perforated cover.

iv. They help in laying the sewer line in convenient lengths.

Answer 2

Answer:

It helps to pass the water