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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Gurmeet Singh posted an Question
February 03, 2021 • 06:44 am
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30 points
30 points
- IIT JAM
- Geology (GG)
Where actually the dams best suited.. about its best locations. please discuss main points. please
Choose the correct statement(s): (A) Gravity dam is a rigid structure, straight or slightly curved in places. (B) Arch dams are commonly built on very strong foundations. (C)Buttress dam chiefly consists of reinforced concrete slab that slopes upstream. (D) Earth dams have a concrete wall curved with convex face pointed towards the upstream.
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Asif ali Best Answer
Arch dam made on the strong foundation is not necessary. All other remaining options are likely True.
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can u discuss more... about the best location for each type of dam...exam point of view
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Yes sure I can. (1) Arch dam :- Arch dams is a concrete dam that is curved upstream and generally made and most suitable for gorges. And this not necessary to be a strong foundation it can be made on weak foundations too. Arch dam walls are thinner w.r.t. other dams. Example is IDUKKI DAM, KERALA , INDIA. (2) Butteres Dam :- Which is mainly RCC ( Reinforced Cement) slabs made such a way that Dam slopes upstream side of reservoir. Consists of seperate alternate Buttres walls so named Buttress. This dam can be constructed on weak foundations. Example - Indira Sagar dam,M.P., India. (3) Earth / Embankment Dam :- Build by compacting successive layers of Earth using the more Impervious earth materials not use use of strong concretes. they made such that core of the dam is made of impervious materials but upstream and downstream side of dam made by permeable materials. This dam has convex upstream structure. They can build on all type of foundations ie very weak foundations to very strong foundations. Height of the dam proportional to strength of the foundation. Example :- Bhavani Sagar Dam , Tamilnadu , India.
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Sajan sarthak![best-answer]()
OPTION A and B is correct