Enter the patio vertical drop and the patio width into the Patio Fall Ratio Calculator. The calculator will evaluate and display the Patio Fall Ratio.

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## Patio Fall Ratio Formula

The following formula is used to calculate the Patio Fall Ratio.

**PATR = D / W**

- Where PATR is the Patio Fall Ratio
- D is the patio vertical drop
- W is the patio width

## How to Calculate Patio Fall Ratio?

The following example problems outline how to calculate Patio Fall Ratio.

Example Problem #1:

- First, determine the patio vertical drop .
- The patio vertical drop is given as: 5.

- Next, determine the patio width.
- The patio width is provided as: 150.

- Finally, calculate the Patio Fall Ratio using the equation above:

PATR = D / W

The values given above are inserted into the equation below and the solution is calculated:

PATR = 5 / 150 = .033 = 3.33%

Example Problem #2:** **

For this problem, the variables required are provided below:

patio vertical drop = 6

patio width = 200

Test your knowledge using the equation and check your answer with the calculator above.

PATR = D / W** = ?**