1. The load on the structure that eventually comes off. an example of a live load is a person on a bike
1.1. Person riding a bike
1.2. Person driving a car
2. Form and function
2.1. Every structure has a form and a function. The form is the basic shape of a structure. The function of a strucure is how a structure works to seve its purpose
2.1.1. The chair is a frame structure because it is made up of structural components fastened together. It's function is that it has a space so that a person can sit comfortably without straining their back.
2.1.2. Bottle, the form is a shell structure. It's function is to hold liquids so they are easy to carry around and drink from
2.1.2.1. bottle
3. Internal forces
3.1. Torsion
3.1.1. A force that twists
3.1.1.1. Squeezing towel
3.1.1.2. Tornado
3.2. compression
3.2.1. a force that squeezes or presses
3.2.1.1. pressing a button
3.2.1.2. spring
3.3. Shear is when parallel forces act opposite to each other
3.3.1. Tearing a paper
3.3.2. scisors
3.4. Tension is a pulling force
3.4.1. Stretching a rope
3.4.2. stretching a rubber band
4. Center of gravity
4.1. The point on an object where most of the weight is concentrated. It is also the balance point where you can balance the object. for example, if you hold a ruler from it's middle, it will balance because the weight is equally distributed across the strucure.
4.1.1. balancing ruler
4.1.2. balancing broom
5. Types of loads
5.1. Static load
5.1.1. Dead Load
5.1.1.1. The load of the structure itself is called the dead load
5.1.1.1.1. Building
5.1.1.1.2. Bike
5.1.2. Dynamic load
5.1.2.1. Any force that acts on a structure which exerts an extra force on it
5.1.2.1.1. wind
5.1.2.1.2. earthquakes
5.1.3. Live load
6. Purpose
6.1. Purpose is what the object os made for. For example, the purpose of a chair is to sit
6.2. Another example is of a banana. A banana's purpose is to eat.
7. Types of structures
7.1. Most strong hollow structures are shell structures. Shell structures are mainly used for containers because of the space inside them and they are quite light for their size
7.1.1. Basket ball
7.1.2. Bottle
7.2. Solid structures are structures that are solid on the inside. But, a mountain is considered a solid structure even though it may contain caves. This is still a solid structure because it weighs more than a hollow mountain of the same size and rock.
7.2.1. Anvil
7.2.2. Mountain
7.3. Frame structures are made up of structural components. Frame structures can exist as frames or something covering the frame.
7.3.1. Bats wing
7.3.2. paraglider