雅思写作小作文流程图考官范文:房屋保护

2017-06-14 15:04:26来源:网络

  新东方在线雅思频道特为大家收集整理了雅思写作小作文流程图考官范文:房屋保护。雅思写作考官范文很适合烤鸭研读模仿,在研读及模仿过程中,可以帮助我们检验自己的写作水平,并能很好地吸收和应用优秀范文里的优秀内容~更多雅思报名官网的最新消息,最新、最专业的雅思备考资料,新东方在线雅思网将第一时间为大家发布。

  >>>更多请点击:雅思写作Task 1小作文考官满分范文

  话题:

  The diagrams below show how houses can be protected in areas which are prone to flooding.

雅思写作小作文流程图考官范文:房屋保护

  范文

  The diagrams compare two different methods of defence for homes which are at risk of being flooded.

  The key difference between the diagrams is that they show flood protection with and without a stopbank. In either case, the at-risk home is raised on stilts above ground level.

  The first diagram shows how a stopbank acts as a flood barrier to stop river water from flooding homes. The stopbank is a small mound of land next to the river that is higher than the 100-year flood level, and prevents the river from bursting its banks. Nearby houses can be built on stilts to prevent flooding from rainwater, and a floodgate beneath the stopbank can be opened to allow this ‘ponding’ to drain off into the river.

  When there is no stopbank, as shown in the second diagram, there will be nothing to stop the river from flooding. In this case, the solution is to put buildings on stilts. The height of the stilts is measured so that the floor of the house is 300mm above the 100-year flood level. This measurement is called the ‘freeboard’.(184)


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