1 / 24

What are drains?

What are drains?. A drain is the place where all our waste water goes. It also collects rain water. 150 litres a day!. How much water do we use?. How you use water. What happens if drains are damaged or full?. These are instances of flooding.

sotom
Download Presentation

What are drains?

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. What are drains? A drain is the place where all our waste water goes. It also collects rain water.

  2. 150 litres a day! How much water do we use?

  3. How you use water......

  4. What happens if drains are damaged or full? These are instances of flooding.

  5. Drains need to be replaced, or made bigger....... Creep Growth WHY? Climate Change Deterioration

  6. Climate Change......What is going to happen? Winters are getting wetter. Climate Change

  7. Growth – More people building houses

  8. Sewers are fuller! More People More Water Used Growth

  9. Creep – People paving over gardens

  10. Paving Drain What is ‘Creep’?

  11. How much water does a tree use? 265 litres a day! Most people just drink 2 litres a day!

  12. Can you drink as much water as a tree? • An average tree takes up 264 litres a day from the ground though it’s roots. • That’s 180ml a minute! • Trees roots are usually as long as the tree is tall, so a tree 5 meters tall collects water 5 meters away from the trunk. • This is the same as a person drinking 750ml of water through a straw in 10 seconds. • How much water can you drink though a straw in 10 seconds? Challenge 1

  13. Transpiration The water that trees breath out. 8 trees = 2120litres Drain Creep

  14. How else do trees help drainage? • The roots from trees make the soil more porous. This means it can soak more water. • Which is more porous, a sponge or a stone? • Tip 500ml of water over both items, and measure how much water you collect underneath. • The more porous the material, the less water you should collect. Challenge 2

  15. How else do trees help drainage? • Can you make a material more porous? • Take a piece of clay and pour water over it. Collect and measure the water. • Experiment with ways of making the clay more porous and repeat the test. Challenge 3

  16. How much creep is happening? • Since 1945, an area of around 139 square Kilometres has been paved over in cities such as Cardiff. • That’s the same as 310 times the size of the the Millennium Stadium! Millennium Stadium

  17. Waste from people can affect the sewers. Clean Sewer. Sewer filled with fat, oil and grease. Deterioration

  18. This is a sewer tunnelling machine. How easy is it to put them in? 2005 Deterioration 1895

  19. What can we do? Collect ‘Grey Water’ Drainage

  20. What can we do? Plant some plants After – The plants here are highly water absorbent. Before Drainage

  21. What can we do? Plant some plants After – Also help calm traffic, as well as absorbing water. Before Drainage

  22. What can we do? Make a rain water garden Again, highly absorbent plants to take up as much water as possible, and reduce the amount entering drains. Drainage

  23. AND FINALLY, Be more water efficient! Reduce how much water you put down the drain!

More Related