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Hamad International Airport was built on artificial land that was reclaimed from the gulf waters. This...

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Civil Engineering

Hamad International Airport was built on artificial land thatwas reclaimed from the gulf waters. This project reclaimed morethan 60 million m3 sand in less than 2 years. Thisproject is one of the most innovative land reclamation projects inMiddle East.

Based on your knowledge; answer the followingquestions:                                                                                  

1. What type of dredger(s) can be used in the presence of sandmaterial?   

2. What type(s) of dredging methods can be used? why?                                                                      

3. Identify five different type of risk categories with itsexamples that might be involved in this project using the tablebelow;

Answer & Explanation Solved by verified expert
3.5 Ratings (558 Votes)
1 Type of dredgers that can be used in presence of sand materials are i Suction Dredgers These are generally employed to remove sand or silt deposits from the seabed They have a vertical suction pipe which is pushed vertically inside the sand deposit and dredged material is sucked with or without water jet The dredged material is laden into barges or can directly to the reclamation area These suction dredgers can be of two types viz profile or plain suction Dredgers and Cutting Suction Dredgers Rest of the working and design of cutter suction dredger is similar to the plain suction dredger but has the only difference that cutter suction dredger is equipped with a cutting tool which may be swinging arc ii Water Injection Dredger It is a selfdriven dredger which excavates sediments with strong water jets Strong water jet converts the sediments into suspension as this suspension is heavier than water it is carried away by water    See Answer
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