# Structures and Forces

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Structures and Forces

### 1.1. Definition: A force acting on a structure

1.1.1.1. Definition: A force that moves or changes while acting on a structure.

1.1.1.1.1. Example 1: Wind- wind is a dynamic load because you can't predict it it easily and also it would affect a structure from the outside just like a very strong wind can blow a tree down.

1.1.1.1.2. Example 2: Rain- rain is a dynamic load because it can affect a structure from it's outside, just like it can cause landslide when it's raining really hard.

## 2. Force

### 2.1. Definition: Any push or pull acting on a structure that can change the structure's shape, speed or direction

2.1.1. External Force

2.1.1.1. Definition: Force applied to a structure from the outside

2.1.1.1.1. Gravity

2.1.1.1.2. Plane of Application

2.1.1.1.3. Point of Application

2.1.2. Internal Force

2.1.2.1. Definition: Force that one part of a structure exerts on other parts within the same structure.

2.1.2.1.1. Compression

2.1.2.1.2. Tension

2.1.2.1.3. Torsion

2.1.2.1.4. Shear

## 3. Structures

### 3.1. Definition: Any small or large object that provides support and has at least one function.

3.1.1. Form

3.1.1.1. Definition: basic shape of a structure

3.1.1.1.1. Frame Structure

3.1.1.1.2. Shell Structure

3.1.1.1.3. Solid Structure

3.1.1.1.4. Combination Structure

3.1.2. Function

3.1.2.1. Definition: Purpose of a object or structure

3.1.2.1.1. Strength

## 4. Sensors

### 4.1. Definition: Any devices that can detect or measure real world conditions such as heat, light, pressure or sound and changes in the amount of these things.

4.1.1. Example 1: Carbon dioxide sensor- It's a kind of sensor because it's a device that's can measure real world conditions, this sensor can measure the amount of carbon dioxide that's in the air.

4.1.2. Example 2:Air pollution sensor- It is also a kind of sensor because it can also detect real world conditions, this sensor can detect how serious the air got polluted.