Permeable Driveway – Day Two

Posted on August 4th, 2015 by John Foegley
Installing weed barrier fabric

Installing weed barrier fabric

Permeable pavement is basically the construction of a hard surface that water can go thru very rapidly.  This requires different materials and processes than standard brick pavement.

Compacting the subgrade provides a solid foundation for a permeable driveway, but it is important not to over compact as that may prevent good drainage. After a quick, one pass compaction, we rolled out weed barrier along the edges to separate perimeter soils from the gravel drainage material.   Geo-grid is a structural product that we also installed to help support vehicle traffic on this driveway.

Compacting Base

Compacting Base

The base material for our permeable driveway was 20 tons of clean 3/4″ limestone. We set up grade lines, spread and compacted this material in two, four inch lifts.

 

Screeding Bedding Chips

Screeding Bedding Chips

After completing the 2nd lift, screed pipes were set and 1″ of 1/8″ limestone bedding material was installed.

 

Most areas were ready for the paver installation by the end of day two.  Everybody was tired but very happy with what had been accomplished.