There are three types of load. These are;

- Point load that is also called as concentrated load.
- Distributed load
- Coupled load

## Point Load

Point load is that load which acts over a **small distance**. Because of concentration over small distance this load can may be considered as acting on **a point**. Point load is denoted by** P **and symbol of point load is arrow heading downward **(↓)**.

## Distributed Load

Distributed load is that acts over a** considerable length** or you can say “over a length which is measurable. Distributed load is measured as** per unit length.**

### Example

If a 10k/ft load is acting on a beam having length 10′. Then it can be read as “**ten kips of load is acting per foot”**. If it is **10′** then total point load acting is 100Kips over the length.

## Types of Distributed Load

- Distributed load is further divided into two types.
- Uniformly Distributed load (UDL)
- Uniformly Varying load (Non-uniformly distributed load).

### Uniformly Distributed Load (UDL)

Uniformly distributed load is that whose magnitude remains uniform throughout the length. **For Example:** If 10k/ft load is acting on a beam whose length is 15ft. Then 10k/ft is acting** throughout the length** of 15ft.

Uniformly distributed load is usually represented by** W** and is pronounced as **intensity of udl** over the beam, slab etc.

### Uniform Distributed Load To Point Load

Conversion of uniform distributed load to point load is very simple. By simply **multiplying** the **intensity of udl** with its **loading length**. The answer will be the point load which can also be pronounced as **Equivalent concentrated load (E.C.L).** Concentric because converted load will acts at the **center** of span length.

**Mathematically**, it can be write as;

**Equivalent Concentrated load** =** udl intensity(W)** x **Loading length**

## Uniformly Varying Load (Non – Uniformly Distributed Load)

It is that load whose **magnitude varies** along the loading length with a **constant rate**.

Uniformly varying load is further divided into** two types**;

- Triangular Load
- Trapezoidal Load

### Triangular Load

Triangular load is that whose magnitude is** zero** at **one end **of span and increases constantly till the **2nd end** of the span. As shown in the diagram;

## Trapezoidal Load

**Trapezoidal load** is that which is acting on the **span length** in the form of **trapezoid**. Trapezoid is generally form with the** combination of uniformly distributed load (UDL)** and **triangular load**. As shown in the diagram below;

## Coupled Load

**Coupled load** is that in which** two equal and opposite forces** acts on the **same span**. The **lines of action** of both the forces are **parallel to each other** but **opposite** in **directions**. This type of loading creates a couple load.

Coupled load triy to **rotate the span** in case **one load** is** slightly more** than the 2nd load. If force on one end of beam **acts upward** then same force will acts **downwards** on the **opposite end** of beam.

Coupled load is expressed as **kip.m, kg.m, N.m, lb.ft** etc.