Permeable Paver Installation, Ann Arbor University of Michigan

Permeable Paver Installations help to reduce run off into City Storm drains. This may help reduce contaminates from entering valuable ecosystems like the Huron River. Permeable pavers require extra excavation and extra base material.  These bike loops were excavated over 22 inches below finished grade. Sub base was compacted and a geotextile fabric was installed on top to prevent base from mixing with sub base while adding flotation to the base material. Over  12 " of MDOT#2 was compacted in 3" layers followed by more than 4" of MDOT 6AA. Bedding course is 1.5" of MDOT 29A. Clean angular joint filler was also used. These materials in combination with concrete pavers will allow water to perk into the ground reducing run off.