# Structure and Forces

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Structure and Forces

1.1.1. Examples

1.1.1.1. Wind

1.1.1.1.1. Earthquakes

1.1.2. Dynamic load is when it is created in motion and is not constant

1.2.1. Live load isn't constant it is moved all the time

1.2.2. Examples

1.2.2.1. People

1.2.2.1.1. Furniture

1.3.1. Examples

1.3.1.1. Gravity

1.3.1.1.1. Ceiling

## 2. Form and function

### 2.1. Form

2.1.1. Form is how the structure looks like or the capabilities of the structure.

2.1.2. Examples

2.1.2.1. Large structure

2.1.2.1.1. Apartment

2.1.2.2. Strong structure

2.1.2.2.1. House

### 2.2. Function

2.2.1. Examples

2.2.1.1. Transportation

2.2.1.1.1. Car

2.2.1.2. Shelter

2.2.1.2.1. House

2.2.2. Function is what the structure can do, or what its function is

## 3. Enternal Force

### 3.1. Examples

3.1.1. Tension

3.1.1.1. When forces are pulled in opposite directions it creates torsion

3.1.1.2. Examples

3.1.1.2.1. Pulling on elastic band

3.1.2. Compression

3.1.2.1. When forces pulled in opposite direction it creates compression

3.1.2.2. Examples

3.1.2.2.1. Sleeping on a pillow

3.1.3. Torsion

3.1.3.1. Torsion is created when opposite rotational forces are applied

3.1.3.2. Examples

3.1.3.2.1. Turning the door knob

3.1.4. Shear

3.1.4.1. Shear is when two parallel forces are at work at the same place within an object

3.1.4.2. Examples

3.1.4.2.1. Strong wind bending a tree

### 3.2. Definition

3.2.1. External force is a structures respond to stress.

## 4. Internal Force

### 4.2. Examples

4.2.1. Person sitting on a chair

4.2.1.1. Kicking a soccer ball

4.2.1.1.1. Baseball player hitting a ball

### 4.3. Magnitude

4.3.1. A measure of how strong the force is.( a hard strike is a higher magnitude force)

### 4.4. Direction

4.4.1. The direction of a force affects how a structure will react to it.

### 4.5. Point of application

4.5.1. The location where the force is applied

### 4.6. Plane of application

4.6.1. A force that applied to an object to make the object move from one place to another

## 5. Types of Structure

### 5.1. Solid Structures

5.1.1. They are solid all the way through

5.1.2. Some examples

5.1.2.1. Mountains

5.1.2.1.1. Dam

### 5.2. Frame Structures

5.2.1. They are joined together and is a skeleton

5.2.2. Some examples

5.2.2.1. Cars

5.2.2.1.1. House

### 5.3. Shell Structures

5.3.1. They are hollow on the inside

5.3.2. Some examples

5.3.2.1. Igloo

5.3.2.1.1. Dome