1. Center of Gravity
1.1. The place on a structure or living thing where most of the weight is.
2. Types of Structures
2.1. Frame
2.1.1. A frame structure is a structure that is kind of like a skeleton of a structure
2.1.1.1. bicycle
2.2. Shell
2.2.1. A shell structure is a structure that is made to contain something
2.2.1.1. Helmet
2.3. combination
2.3.1. A combination structure is a structure that has more than one type of structures
2.3.1.1. House
2.4. solid
2.4.1. A solid structure is a structure that is very strong and is made to support loads
2.4.1.1. pyramid
3. Applying Forces
3.1. The effect of a force on a structure depends on the direction and how you apply the force
3.1.1. point of application
3.1.1.1. the angle a force is being applied
3.1.2. Magnitude
3.1.2.1. magnitude is the measure of how strong a force is
3.1.2.1.1. strong force
3.1.2.1.2. weak force
3.1.3. plane of application
3.1.3.1. plane of application is where the force is being applied
3.1.3.1.1. top
3.1.3.1.2. middle
3.1.3.1.3. bottom
3.1.4. direction
3.1.4.1. direction is the direction a force is being applied
3.1.4.1.1. push
3.1.4.1.2. pull
4. Function
4.1. The function of a structure is what the structure was built to do
5. Form
5.1. The form of the structure is how it was designed and built
6. External forces
6.1. External forces are natural forces acting on a structure
6.1.1. wind
6.1.2. rain
6.1.3. snow
6.1.4. sun
6.1.5. gravity
7. Types of loads
7.1. Dead load
7.1.1. A dead load is the weight of the structure itself
7.1.1.1. Chair
7.2. Live load
7.2.1. The weight that is added onto the structure
7.2.1.1. cars on bridge
7.3. Dynamic load
7.3.1. A load that is is not constant but acts on the structure.
7.3.1.1. wind
8. Internal Forces
8.1. Internal forces are the acts that are within a structure
8.1.1. Tension
8.1.1.1. Tension is when you stretch something
8.1.1.1.1. Stretching a rubber band
8.1.2. Compression
8.1.2.1. Compression is when you push down something
8.1.3. Torsion
8.1.3.1. Torsion is when you twist something
8.1.3.1.1. Twisting a towel
8.1.4. Shear
8.1.4.1. Shear is when you rip something