What is a dam PDF?

DAMS • Dam, structure built across a stream, a river, or an estuary to retain water. A dam is a hydraulic structure of fairly impervious material built across a river to create a reservoir on its upstream side for impounding water for various purposes.

How a dam is built step by step?

This is a typical sequence of events for constructing a dam and creating a reservoir:

  1. Diverting the river.
  2. Preparing the foundation for the dam.
  3. Building the dam. – Concrete dam. – Embankment dam.
  4. Filling the reservoir.
  5. Testing that valves and floodgates work.
  6. Monitoring the behaviour of the newly built dam.

What are the materials used for construction of dam?

In modern dam engineering, the choice of materials is usually between concrete, earthfill, and rockfill. Although in the past a number of dams were built of jointed masonry, this practice is now largely obsolete and has been supplanted by concrete.

What is dam PPT?

Presentation Developer. A dam is a hydraulic structure of fairly impervious material built across a river to create a reservoir on its upstream side for impounding water for various purposes. A detailed ppt on dams,its types,pros and cons. Read more.

How can we make a dam at home?

Process

  1. Fill the Tupperware container with sand.
  2. Dig the path of a river in the sand.
  3. Choose a spot somewhere along the river to build your dam.
  4. Use popsicle sticks and small rocks to construct a dam that will let only a little bit of water come through, but not too much.

What is the most common type of dam?

Gravity: Concrete gravity dams are the most common form of concrete dam. The mass weight of concrete and friction resist the reservoir water pressure. Gravity dams are constructed of vertical blocks of concrete with flexible seals in the joints between the blocks.

What is purpose of dam?

A dam is a structure built across a stream or river to hold water back. Dams can be used to store water, control flooding, and generate electricity.

What are the problems of dams?

Some environmental problems caused by dams are as follow:

  • (i) Soil Erosion:
  • (ii) Species Extinction:
  • (iii) Spread of Disease:
  • (iv) Changes to Earth’s Rotation:
  • (v) Sedimentation:
  • (vi) Siltation:
  • (vi) Water logging:
  • (viii) Salinisation:

How do you build a dam for a pond?

How to Build a Simple Dam & Spillway for a Pond

  1. Identify the Water Source.
  2. Create a Temporary Dam.
  3. Dig a Trench.
  4. Fill the Trench with Large Rocks.
  5. Add a 1-Ft High Layer of Rocks and Tree Branches.
  6. Cover the Branches With Small Rocks.
  7. Layer Rocks and Branches for the Right Height.
  8. Remove the Temporary Dam.