1. Solid structure because materials that were used are solid to support loads or people walking on it
2. Form and Function
2.1. Form is what the structure looks like
2.1.1. Example
2.1.1.1. A basketball looks like a shell structure because it is curved and you know it is hallow.
2.2. Function is what the structure does
2.3. Example
2.3.1. A fan is used to cool people down.
3. Center of Gravitiy
3.1. Is finding the heaviest point in a object of structure
3.2. Example
3.2.1. If you were to find the center of gravity on a pencil it would be in the middle because that is were the weight is balanced.
3.2.2. The center of gravity on a broom would be near the bottom because it is heavier on the bottom then the top.
4. Internal forces
4.1. Torsion
4.1.1. Torsion is when you twist something apart
4.1.2. Example
4.1.2.1. When you twist the lid of a water bottle.
4.2. Tension
4.2.1. Tension is when you pull apart an object
4.2.2. Example
4.2.2.1. When you pull apart velcro
4.3. Compression
4.3.1. Compression is when you push down on an object
4.3.2. When you do push ups.
4.4. Shear
4.4.1. Shear is when you use different directions on an object
4.4.2. Example
4.4.2.1. When you break a pencil in half.
5. Loads
5.1. Live load
5.1.1. The weight of an object can move or effect the structrue
5.1.2. Example
5.1.2.1. When cars drive on bridges.
5.2. Dead load
5.2.1. Is when there is nothing affecting the object
5.2.2. Example
5.2.2.1. When no one is in a car.
5.3. Dynamic load
5.3.1. Uses different forces to help the structure function
5.3.2. dynamic load
5.3.2.1. When different forces affect the object
5.3.2.2. Example
5.3.2.2.1. Wind blowing against the tree.
5.4. Static load
5.4.1. Uses gravity and other forces on a structure.
5.4.2. Example
5.4.2.1. A bike with a human on it.
6. External force
6.1. Direction
6.1.1. Direction is when you push or pull an object
6.1.2. Example
6.1.2.1. Someone opening a door.
6.2. Point of application
6.2.1. Point of application is where you are hitting the object
6.2.2. Example
6.2.2.1. When you play baseball you find were you would hit the ball.
6.3. Plane of application
6.3.1. The angle were you hit the object
6.3.2. Example
6.3.2.1. The angle you chose to hit the ball while playing a game.
6.4. Magnitude
6.4.1. Magnitude is how heavy, moderate of light the object is
6.4.2. Example
6.4.2.1. It can be someone pushing their car because it is stuck.
7. Types of Structures
7.1. Frame
7.1.1. Can be a skeleton or used network
7.1.2. Example
7.1.2.1. It can be a frame of a house before it is made.
7.1.2.2. Another example can be the skeleton of a human.
7.2. Shell
7.2.1. Is a curved hallow structure
7.2.2. Example
7.2.2.1. A volleyball can be a shell structure because it is a curved and hallow structure.
7.2.2.2. Another example can be a helmet because it is also strong hallow and curved.
7.3. Solid
7.3.1. Uses solid materials to make a structure
7.3.2. Example
7.3.2.1. The Great Wall of China is a solid structure because the materials are all solid and is very stable.
7.3.2.2. A sandcastle can be a solid structure because when the sand is all packed up it is a solid structure.
7.4. Combination
7.4.1. Uses all three structures to make one
7.4.2. Example
7.4.2.1. A building is a example of a combination because when it is being made it has a frame and is hallow inside and uses solid materials.
7.4.2.2. An apartment building can also be a combination structure because it is hallow inside has a frame when it is being built and uses solid materials.
8. Great wall of China
8.1. Form
8.1.1. it looks like a solid structure because the materials that they used to build the structure are solid and is stable. A example of a solid structure can be a crystal.
8.2. function
8.2.1. the propose is to protect the country from other people that might want to come in. That is why the Great Wall is really tall and strong.
8.3. 1) External force
8.3.1. point of application
8.3.1.1. If you hit the bottom of the structure the whole building will fall down because the center of gravity is gone so there is nothing keeping it balanced and holding it up.
8.3.1.2. If you hit the top it wont do as much damage because it would still have a low center of gravity to keep it standing.
8.4. 2) External force
8.4.1. plane of applictipon
8.4.1.1. The angle you hit the structure might be more effective than another angle
8.4.1.2. If you use a 90 degree angle it might cause more damage than a 45 degree angle
8.5. Type of structure
8.5.1. Solid structure because materials that were used are solid to support loads or people walking on it
8.6. Internal forces
8.6.1. Shear
8.6.1.1. If you use something that would smash the middle of the structure it would break in half which means the Great Wall would not serve its propose in protecting the country
8.7. Supporting loads
8.7.1. It can support various loads because it has a low center of gravity and uses solid materials
8.8. Center of gravity
8.8.1. The center of gravity it low so that the structure can be more stable. it is important to the structure because if it was not stable the structure would end up falling down.