1. Roman Architecture

2. Arches The Romans used arches to support the things they built.
They built victory arches, buildings and aqueducts.

3. Aqueducts

4. Aqueducts- a way to carry water
There wasn’t enough water in the city of Rome.
The Romans brought water in from the surrounding countryside.
The water was brought in by tubes called aqueducts.

5. Why arches? Water is heavy stuff.
The Romans needed a structure strong enough to hold all that water to move it from the mountains into the city.

6. Where did the water go? The water was transported in concrete tunnels.
The tunnels were underground if possible.
Sometimes the tunnel had to go above ground.

7. How did the aqueduct work?
The water flowed in a tube on the top of the aqueduct called a water channel.
The arches supported the water channel.

8. What did the water channel look like?
The water flowed through a rectangular channel.
The channel was lined with concrete”formigó”.
The Romans invented concrete.

9. Where else did the Romans use arches?
Arches of Triumph
Buildings
Roofs

10. Arches of Triumph- to celebrate military success

11. The Coliseum- a place for sports….

12. The Coliseum- a blend of Greek and Roman architecture
The arches are supported by central columns.
The columns on the first floor are Doric.
The columns on the second floor are Ionic.
The columns on the third floor are Corinthian.

14. The Pantheon- a temple to all the gods

15. How does an arch work? Keystones
The keystone is the red stone at the top of the arch.
The keystone is what the weight rests on.

16. How does an arch work? Voussoirs
The semi-circular stones on either side of the keystone are the voussoirs “voltes”
The voussoirs bring the weight to the columns that go to the ground.

17. How does an arch work? Buttressing
The square or rectangular blocks between each arch are buttresses”contraforts”
The buttresses make a column that takes the weight all the way to the ground.

18. Modern arches Office in Tyson’s Corner Dominion Towers US Capital
Hotel Roanoke

19. Your Task Go to your seat. You are going to draw an arch.
Just follow your teacher’s directions and you can do it!

20. First
Use the yogurt lid to draw a semi-circle.

21. Second
Add legs to your semi-circle.
Now you have an arch.

22. Third
Draw a smaller arch inside the first one.

23. Fourth
Draw a Keystone at the top of the arch.

24. Fifth
Now draw the Voussoirs that hold the Keystone in place.

25. Sixth Draw a second arch next to the first one.
Go through the same steps.

26. Seventh You did it! Success!
the arches connect with buttresses ”contraforts”
You did it!
Success!