Permeable Driveway – Day Two
Posted on August 4th, 2015 by John Foegley
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
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
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.