> ## Documentation Index
> Fetch the complete documentation index at: https://calcs.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# How to Design a Sloped or Angled Member

> How to Design a Sloped or Angled Member

To calculate a sloped member in Calcs.com, you need to use [user formulas](/learn_calcs/advanced_tricks/how_to_use_formulas_and_convert_units_in_inputs) to adjust lengths and support locations by the rise/run or degrees of the given slope. In this way, you can still enter the length of a rafter from the plan drawing and adjust it in Calcs.com using the simple formulas below.

**Using Rise/Run**

The formula for 7:12in rise over run is:

```
Member Length * SquareRoot(Rise^2+Run^2)/Run
=5ft * sqrt(7^2+12^2)/12
```

Sub in the rise required rise and member length

*Example 1:* 5ft beam with rise of 7:12 inches

![](https://s3.amazonaws.com/helpscout.net/docs/assets/5c09df402c7d3a31944ed720/images/5e852b5004286364bc97ac1d/file-3gekQHryOF.png)

**Using Degrees**

You can also adjust the length of a member based on degree slope:

```
Member Length * 1/cos(theta)
=5ft * 1/cos(30deg)
```

*Example 2:* 5ft beam with slope of 30 degrees - N.B. You need to specify either 'deg' or 'degree' units for the degrees so it calculates correctly

![](https://s3.amazonaws.com/helpscout.net/docs/assets/5c09df402c7d3a31944ed720/images/5e852ce52c7d3a7e9aea3a27/file-k92RWZDch5.png)

**Using a Slope Factor**

You can also multiply the plan length by the appropriate slope factor.

![slope-factor-chart - Roofing Calculator - Estimate your Roofing ...](https://i0.wp.com/www.roofingcalc.com/wp-content/uploads/2017/01/slope-factor-chart.png?fit=960%2C624\&ssl=1)