More and more, we hear about permeable base for paving. But what is it? In this article, we will compare the traditional base to the permeable one. Enjoy reading!
To begin, here are the steps for the traditional paving stone foundation.
- Evaluation of excavation height
- Excavation of 12 to 16 inches depending on soil type
- Laying the geotextile membrane
2. Foundation
Laying 4 to 6 inches of crushed stone 0 – 1 1/2″
Laying 6 to 8 inches of crushed stone 0 – 3/4″
Intense compaction of the foundation
3. Laying bed
Laying 1 inch of stone dust
4. Laying the paving stones
5. Laying polymer sand
Here is a visual example taken from the bricobistro.com site:
In this example, we have the sub-base which is 0 – 1 1/2″ crushed stone. The foundation, which is 0 – 3/4″ crushed stone and the bedding layer which is stone dust. For the geotextile membrane, it is normally found between the soil and the foundation.
