Floating Manhole Cover – Effectively Doubling City’s Drainage Capability


In the past, both urban and rural areas did not have sufficient plans in place to deal with flooding to extreme weather conditions. Over time, we were able to develop intelligent solutions to deal with such emergency situations. However, during the same time weather conditions have changed. Our own activities have affected the earth in a way that nature has turned against us.  We are dealing with environmental and climate changes each year. As a result, freak weather conditions have become a common occurrence.

Nowadays, it is not uncommon to hear about heavy raining and flooding in urban areas. While such conditions break havoc in rural areas, they are also capable of disturbing urban life to a good extent. Therefore, it has become a necessity to innovate more and come up with better solutions to make life easier during such emergency situations in the big cities.

Past Solutions

There is no doubt that cities are planned to deal with emergency weather conditions like heavy rains that might cause the main streets to get flooded. Many of the solutions developed in the past are still working and effective. But, as mentioned earlier, some areas have become prone to heavy rain at certain times of the year and these solutions have the possibility to fail.

Floating Manhole Cover

The Floating Manhole Cover designed by Leijing Zhou, Chunan Liao, Meng Chai and Muchuan Wang is an interesting way to deal with heavy rains and the flooding caused by them. Traditional manholes are designed to be locked into the ground. This means that when the gutter’s capacity of draining water is reached, the water will start collecting in the streets. This causes a lot of mayhem and disturbance in big cities where nothing stops moving around even in such situations. The Floating Manhole Cover, on the other hand, will automatically raise itself when it becomes drowned by water. This allows more water to get drained in a short period of time. Moreover, the cover also raises a built in screen with it which helps to prevent clogging.

The Floating Manhole Cover is designed to double the capability of cities to drain water in extreme rain flooding situations. Streets may still be flooded to some extent but it would make it easier for the busy city life to continue and residents will have to face far less inconvenience.