1. Forces
1.1. External Forces
1.1.1. Gravity
1.1.1.1. A pull force puling anything near the object with larger mass, like us to the center of the earth
1.1.1.1.1. Like the moon and the waves and water.
1.1.2. Dead Load
1.1.2.1. The structure itself
1.1.3. Live Load
1.1.3.1. What the structure supports
1.1.4. Dynamic Load
1.1.4.1. Anything that comes in contact with the structure
1.2. Internal Forces
1.2.1. Sheer
1.2.1.1. Bend or break
1.2.1.1.1. breaking a chocolate bar
1.2.2. Compression
1.2.2.1. to press against something
1.2.2.1.1. using modeling clay for art
1.2.3. Tension
1.2.3.1. to pull something outwards or inwards
1.2.3.1.1. a balance beam
1.2.4. Torsion
1.2.4.1. to twist
1.2.4.1.1. Braiding hair or wringing out a cloth
2. Structures
2.1. Solid Structures
2.1.1. Does not have a hollow or shell base
2.1.1.1. Sofa
2.1.2. Very stabled and strong
2.1.2.1. A bowl made up of clay
2.2. Frame Structures
2.2.1. Are made up of many frames
2.2.1.1. Car
2.2.2. Can be very convenient for some structures
2.2.3. Need to think of function
2.2.3.1. Bridge
2.2.4. Made up of many parts
2.2.4.1. Roller Coaster
2.3. Combination Structure
2.3.1. Can have multiple forms and functions
2.3.2. This structure might be able to preform multiple tasks
2.3.2.1. Bridges
2.3.2.1.1. can make a track for trains and roads for cars.
2.4. Shell Structures
2.4.1. Are mostly hallow
2.4.1.1. Igloo
2.4.2. Are made up of different pieces
2.4.2.1. Plastic Chairs
3. Loads
3.1. Dead load
3.1.1. The overall weight of an object
3.2. Live load
3.2.1. What the structure is supporting
3.2.1.1. A car holds people. The People are the live load
3.3. Dynamic load
3.3.1. This load is the most unpredictable of all loads. it is affected by anything with mass, going near or coming in contact with the object
3.4. Example
3.4.1. A building. The dead load is the building itself, the live load is the people or furniture inside and the dynamic load can be rain and wind outside the building
4. Form
4.1. Definition
4.1.1. The way the structure is built
4.1.1.1. Shell Structure
4.1.1.2. Frame Structure
4.1.1.3. Solid Structure
4.1.1.4. Combination Structure
4.1.2. Appearance
4.1.2.1. Materials
4.1.2.2. Size
4.1.2.3. Shape
4.2. Examples
4.2.1. A Car
4.2.2. An Ice Cream container
5. Function
5.1. Definition
5.1.1. The way a structure is used
5.1.2. The reason why a structure is built
5.2. Examples
5.2.1. a roller coaster
5.2.1.1. needs to think about safety
5.2.2. A ship
5.2.2.1. needs to float to water
5.2.2.1.1. Proper use of materials
5.2.3. A swimming pool
5.2.3.1. Big enough to fit many people
5.2.3.2. needs to have many water pipes to clean out water