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![Image1](https://biomicrobics.com/wp-content/uploads/2023/05/Image1-1.jpg)
What is d-Rain Joint®?
The d-Rain Joint is a filter inserted into concrete expansion joints that allows rainwater and other runoff to filter into the native soil without pooling or contributing to excessive off-flows of stormwater.
The drainage channel is less than 1 inch wide and comes equipped with a removable, washable mesh filter.
As an alternative to permeable concrete and paving stones, the d-Rain Joint® is cheaper and easier to install and maintain.
![drain_img2](https://biomicrobics.com/wp-content/uploads/2023/05/drain_img2.png)
How Does it Work?
When it rains, the water flows across the surface of the concrete.
Rainwater percolates through the filter in the d-Rain Joint, and penetrates the aggregate under the concrete
The water drains through the aggregate and into the soil. This eliminates runoff and helps to recharge existing groundwater resources.
![Image2](https://biomicrobics.com/wp-content/uploads/2023/05/Image2-2.jpg)
![drain_img3](https://biomicrobics.com/wp-content/uploads/2023/05/drain_img3.jpg)
Product Applications
Sizing the d-Rain Joint®
Dimensions
Channel width | Channel length | Height* | Max Flow rate | ||||
---|---|---|---|---|---|---|---|
Inch | Mm | Feet | Mm | Inch | Mm | GPM | LPM |
1 | 25 | 8 | 203 | 4 | 102 | 2 | 7.6 |
1 | 25 | 8 | 203 | 6 | 152 | 2 | 7.6 |
1 | 25 | 8 | 203 | 8 | 203 | 2 | 7.6 |
*Units are stackable to up to three units deep to fit different depths of concrete.