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the CN tower
Testo Storyboard
- You must research a building in Toronto.
- Can we be in partners?
- Yes.
- Yaaaaaaaay.
- I want to do the CN tower.
- Why.
- It is an important part of our city and it would be interesting to learn about.
- Oh, I forgot the CN tower is in Toronto. Ok, I guess we should start researching.
- Wow. Did you know the CN tower was built in February 1974 but they began construction a year earlier?
- No. Did you know it took 1500 workers to build the CN tower?
- The CN tower is symmetrical.
- Did you Know that before the CN tower became a tourist attraction its main purpose was for telecommunication?
- Wow, I never would have guessed the CN tower is mainly concreate and steel.
- It also has glass.
- Really? Where?
- The elevators, glass floor, and windows.
- Ohhhhhh, hahahha right.
- Do you know what kind of structure the CN tower is?
- I think it is a shell structure because it is hollow.
- Yeah, but it is also a frame structure because it has beams and other parts inside. Oh, and don't forget that it is also a solid structure.
- Then it must be a combination of all of them.
- Oh, I did not know that was a option.
- Aren't you surprised the CN tower is still in perfect condition?
- Not really. It is really strong and stable.
- Yeah, its shape gives it a lot of stability because of the wide base that gets smaller as it goes up.
- And it has metal anchors that hold up post-tension cables whatever those are.
- They are cables mostly used in construction using a lot of concreate.
- I guess it makes sense that they used it in the CN tower since it is mostly concreate.
- They use it so that they can have longer distances between support columns.
- Oh, I think I read that somewhere. They put steel strands inside of concreate pillers to reinforce them.
- Okay, time for you to present.
- ok.
- But a couple of things we think make the CN tower esthetically pleasing are that it is symmetrical, tall and has lights.
- Esthetics is something that depends on the person.
- Thank you for listening.
- Ten minutes later.
- Great presentation.
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