Permeable/Porous Concrete Pavers

Overview of Construction Procedures

Methods and requirements may vary from manufacturer to manufacturer and project to project. However, in many cases installation is similar to that used for traditional solid pavers installation to produce a flexible pavement system.

Pavers are the wearing course

Bedding layer: Usually a layer of coarse, clean, sharp, sand conforming to grading requirements of ASTM C33 that is screed to a uniform depth of 1.5". Often is of the same aggregate used to fill the drainage voids and joints of the paver.

Base course: A base course can be compacted aggregate, cement or asphalt-stabilized aggregate, asphalt, concrete, or flowable fill. Placed upon a subbase or subgrade in a designed thickness. Purpose is to support a surface course.

Sub-base (if required)

Subgrade: With permeable subgrades, all water may be drained directly into the subgrade or diverted to lateral storage or drainage systems.

Note: In some cases, a permeable blanket is added to prevent migration of particles from one layer to the next.

Design software and support is available from:http://www.uni-groupusa.org

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