Question
What is key application of inverted siphons? What are major drawbacks of using inverted siphons?

Answer
Inverted siphons are planned at locations in which sewer system is blocked by anti-establishment utilities, storm water drains. They are now and then known as depressed sewers as it is claimed that there is no real siphon action. They attach upstream and downstream sewers with U-shaped straight up alignment such that they forever running full.

Drawbacks of inverted siphons are-
(i) They induce extra head loss to sewer system which is disagreeable in hydraulic performance.
(ii) U-shaped siphons construct sediment accumulation trouble and earlier experience showed that inverted siphons were simply blocked due to siltation;
(iii) Protection of overturn siphons is complicated due to its isolation.