Technology

1.    Analyze a typical structure from the “Delta de l’Ebre”: forces, loads, shape, materials. Can you see any bridge?

A “Barraca” is a typical building in the “Delta”. It is a long and triangular house. The structure is made of wood. The walls and the roof are made of canes. The canes of the walls are recovered of mud and the canes of the roof are recovered of “Borró”. It haves a triangle shape. It haves a compression force in the walls and finally it haves a wind load so in the house we find diagonal braces that stabilize the house.

yes.

2.    Parts of a bicycle. Analyze your bicycle: how many plates and pinions have your bicycle?

Have a 1 plate and a 1 pinion

 Which is the gear ratio of your bicycle?

r = 2/1

Do you think that the bicycle is a multiplying or a reduction system? Why?

Is a multiplying system because the gear ratio is more than 1 --> 34/17= 2

3.    Draw a Compass Rose, using the Autosketch program. You have the needed instructions hanged on the “Campus Virtual”