The diagrams below show how houses can be protected in areas prone to flooding. Summarise the information by selecting and reporting the main features, and make comparisons where relevant.
Sample Answer:- The Diagrams Below Show how Houses Can Be Protected in Areas that Are Prone to Flooding
The diagram displays the protection of dwelling units in places that are likely to be flooded. In all, there are two ways to ensure this.
Overall, it is noticeable that there are two primary methods for preventing buildings situated in flooding areas.
Firstly, there is the one which involves the use of a stopbank. With this method, a structure that looks like a mountain, known as a stopbank, is erected between the housing units and the location of the 100-year flood level. Specifically speaking, the stopbank consists of a device called the freeboard.
It also has a berm bank of earth and a floodgate which all operate to prevent the influx of flood water into housing units. Moreover, the building has been raised with some structures to suspend it above ground level, preventing internal runoff rainwater from entering building structures.
The second structure is without a stopbank, so the 100-year water flows directly into the housing area. With this, the house has to be raised with systems that will enable the housing units to be positioned above the ponding level at 300mm. This helps to prevent a direct influx of flood water into the vicinity.
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