1. Forces
1.1. External
1.1.1. Wind
1.1.1.1. Wind blowing a tree
1.1.1.2. Tornado destroying buildings
1.1.2. Rain
1.1.2.1. Rain corrodes metal lamp
1.1.2.2. Moistens wood
1.1.3. Lightning
1.1.3.1. Lightning strikes building
1.1.3.2. Lightning hits tree
1.2. Internal
1.2.1. Shear
1.2.1.1. Bending in different
1.2.1.1.1. Breaking chocolate bars
1.2.1.1.2. Reloading a catapult
1.2.2. Torsion
1.2.2.1. Twisting apart
1.2.2.1.1. Rinsing out a towel
1.2.2.1.2. Turning a door knob
1.2.3. Tension
1.2.3.1. Pulling apart
1.2.3.1.1. A game of tug of war
1.2.4. Compression
1.2.4.1. Pushing together
1.2.4.1.1. Squeezing a stress ball
1.3. Three factors of forces
1.3.1. Magnitude
1.3.1.1. The strength or speed the force hit
1.3.1.1.1. Fast
1.3.1.1.2. Slow
1.3.2. Direction
1.3.2.1. The path the force used to hit the structure
1.3.3. Plane of application
1.3.3.1. The angle the force hit the structure
1.3.3.1.1. 90*
1.3.3.1.2. 45*
1.3.3.1.3. 10*
1.3.4. Point of application
1.3.4.1. The area the force hit
1.3.4.1.1. Top
1.3.4.1.2. Bottom
1.3.4.1.3. Middle
2. Form
2.1. The design or appearance of a structure
2.1.1. Cargo planes will be built large
2.1.2. Mini figure built small
2.2. Form and function affect each other
2.2.1. Small form less functions
2.2.2. Big form more functions
3. Function
3.1. The purpose the structure was built for
3.1.1. Chair built to let people sit
3.1.2. Shelf built to hold items
3.2. Form alters functions and vice versa
3.2.1. More functions the larger the form
3.2.2. Small form less functions
4. Loads
4.1. Dead load
4.1.1. The structure itself
4.1.1.1. Building holding itself up
4.1.1.2. Bridge holding itself up
4.2. Live load
4.2.1. Things the structure is built to support
4.2.1.1. Chair supports guy
4.2.1.2. Chair supports guy
4.2.1.3. Bus holds people
4.2.1.4. Shelf supports books
4.3. Dynamic load
4.3.1. Wind
4.3.1.1. Wind blowing a tree
4.3.1.2. Tornado destroying buildings
4.3.2. Lightning
4.3.2.1. Lightning striking a building
4.3.2.2. Lightning hitting a tree
4.3.3. Rain
4.3.3.1. Rain washing away leaves
4.3.3.2. Corroding metal
5. Types Of Structures
5.1. Shell
5.1.1. Hollow
5.1.1.1. Igloo
5.1.1.2. Hut
5.2. Solid
5.2.1. Completely full
5.2.1.1. River Dam
5.2.1.2. Statue
5.3. Frame
5.3.1. Small components put together
5.3.1.1. Car
5.3.1.2. Bike
5.3.1.3. Skeleton
5.4. Combination
5.4.1. 3 Types of structures combined
5.4.1.1. House
5.4.1.2. Apartment