1. Function
1.1. The purpose in which the structure was made.
1.1.1. Ex. house was made to shelter people
2. Loads
2.1. Static
2.1.1. Dead load
2.1.1.1. Caused by gravity, does not change and needs to be supported.
2.1.2. Live load
2.1.2.1. Change caused by gravity.
2.2. Dynamic
2.2.1. Forces that change rapidly.
3. Forces
3.1. Internal
3.1.1. Shear
3.1.1.1. Parallel forces that work in opposite directions on a structure
3.1.2. Compression
3.1.2.1. Opposite rotating forces used on a structure
3.1.3. Torsion
3.1.3.1. Pulling or stretching force
3.1.4. Tension
3.1.4.1. Forces pushing in opposite directions
3.2. External
3.2.1. Magnitude
3.2.1.1. The strength of the force
3.2.2. Direction
3.2.2.1. How a structure reacts to the force
3.2.3. Point of application
3.2.3.1. Where the force is applied on a structure
3.2.4. Plane of application
3.2.4.1. The angle the forces was applied
3.2.5. Gravity
3.2.5.1. A force that tries to pull to objects towards each other
4. Form
4.1. the way a structure appears
4.1.1. Frame
4.1.1.1. Made out of many parts put together
4.1.1.1.1. bridge, eiffel tower, spider web, goalie net etc.
4.1.2. Shell
4.1.2.1. Is hollow in the structure
4.1.2.1.1. Egg, igloo, dome etc.
4.1.3. Solid
4.1.3.1. Most structures have no spaces within itself
4.1.3.1.1. Apple, marble statues, concrete dam, solid brick etc.