1. Centre of gravity
1.1. heavy on one side
1.1.1. when it is heavy on one side your center will be near the heavy part.
1.1.1.1. uneven things
1.2. same weight
1.2.1. when tour object is the same weight then your center of gravity is in the middle
1.2.1.1. see saw
2. Applying forces
2.1. shear
2.1.1. shear is when it rips and breaks in half
2.1.1.1. chocolate
2.1.1.1.1. tree
2.2. compression
2.2.1. when you put pressure on either sides of the object
2.3. tension
2.3.1. tension when is when you pull on the object
2.3.1.1. rubber band
2.4. torsion
2.4.1. torsion is when you twist on an object
2.4.1.1. twisting towel
3. External forces
3.1. force acting with an objects or structure from the outside
3.1.1. natural disaster
3.1.1.1. The tornado is acting force on the outside of the building
3.1.2. earthquake
3.1.2.1. The earthquake is acting force from the outside
3.1.3. hailing
3.1.3.1. hailing is a force acting on the outside creating dents that may be visible in the inside.
4. Types of load
4.1. dead load
4.1.1. a dead load is when the load is from the object
4.1.1.1. gears on an elevator
4.1.1.1.1. turtle's shell
4.2. live load
4.2.1. a live load is when a load is added to the object
4.2.1.1. people getting on elevator
4.2.1.1.1. luggage on an elevator
4.3. dynamic load
4.3.1. a dynamic load is an force acts on the structure
4.3.1.1. wind
4.3.1.1.1. rain
5. Form and function
5.1. what it is used for
5.1.1. form and function is how it is used or how its made.
5.1.1.1. form
5.1.1.1.1. dome
5.1.1.2. function
6. Internal forces
6.1. force acting between 2 parts of the body
6.1.1. when you are being pulled by both sides of your arm
7. Types of structures
7.1. Shell structure
7.1.1. shell structure is when it is protective layer on the outside but not as strong
7.1.1.1. egg
7.1.1.1.1. skull
7.2. frame structure
7.2.1. a frame structure is a structure supported with a frame
7.2.1.1. frames of a building
7.2.1.1.1. picture frame
7.3. solid structure
7.3.1. a solid structure is a really heavy structure and very strong
7.3.1.1. concrete
7.3.1.1.1. brick wall
7.4. combination structure
7.4.1. a combination of all above