1. Application of Forces
1.1. Magnitude
1.1.1. How strong or weak is the force applied.
1.1.1.1. Strong, weak, and medium.
1.2. Plane of application
1.2.1. The angle of the force applied.
1.2.1.1. 90 degrees, 45 degrees and 180 degrees.
1.3. point of application
1.3.1. Where is applied on the object.
1.3.1.1. Centre, bottom, the side and the top.
1.4. Direction
1.4.1. Direction of the force that is applied either pull or push
1.4.1.1. Stretching a rubber band is an example of pulling
1.4.1.1.1. Texting on a keyboard is an example of pushing
2. Internal forces
2.1. Tension
2.1.1. Stretching force or pulling force
2.1.1.1. Often happens with compression
2.1.1.1.1. Pulling a rubber band
2.2. Compression
2.2.1. Squeezing force or pushing force
2.2.1.1. When you squeeze rubber ball
2.2.1.1.1. When pushing a door you are applying compression to the structure.
2.3. Torsion
2.3.1. Twisting force
2.3.1.1. Torsion is created when opposite rotational forces are applied to the object.
2.3.1.1.1. The objects responds by twisting
2.4. Shear
2.4.1. Pulling something in opposite directions
2.4.1.1. Cutting a paper with scissors
2.4.1.1.1. When trying to rip clay you pull both ends.
2.4.1.2. Parallel forces acting in opposite directions.
3. Loads
3.1. Dynamic load
3.1.1. Can be wind, rain and potholes on the road
3.1.2. Natural forces that effects the structure
3.2. Static loads
3.2.1. Live load
3.2.1.1. Subjects on structures effected by gravity
3.2.1.2. Can be humans, boat, building or animals
3.2.2. Dead load
3.2.2.1. Structure holding itself
3.2.2.1.1. Effected by gravity
3.2.2.2. Can be bike, building and the ground
4. Classifying structures
4.1. Form
4.1.1. Solid all the way through, strong and really heavy.
4.1.1.1. For example, an apple, a dam and a mountain.
4.1.2. Hallow/Shell, it is light
4.1.2.1. Only supporting the sides of the structure
4.1.2.1.1. Hallow or empty in side the structure
4.1.3. Frame
4.1.3.1. Structure build like a frame
4.1.3.1.1. Has fairly amount of support inside the structure
4.2. Function
4.2.1. what the structure is supposed to do or what it can do to help people.
4.2.1.1. A bridge is supposed to support cars, trains, people.
4.2.1.1.1. Milk carton is supposed to pour milk out to drink.
4.3. Construction/Material
4.3.1. Made by different types of the types of structures.
4.3.1.1. A house is made by frames, really solid and hollow in the inside.
4.3.1.1.1. A car is both frame and hollow in the inside.
4.3.2. Material used for the structure
4.3.2.1. Eco-friendly or not
4.3.2.1.1. Amount of material used