Summary of specifications for permeable pavement

Table summarizing specifications for permeable pavement.
Link to this table.

Material		Specification	Notes
Permeable Pavers	Surface open area: typically 5% to 15%; minimum thickness: 3 inches for vehicles; minimum compressive strength: 8,000 psi	Concrete pavers conform to ASTM C936 and clay pavers C1272. Reservoir layer required to support the structural load.
Pervious Concrete	Void content: 15% to 35 % Thickness: typically 5 to 8 inches	May not require a reservoir layer to support loads, but a layer is required for storage/infiltration. In no case should plain steel rebar or mesh be used in pervious concrete as this invites corrosion.
Porous Asphalt	Void content: 16% to 20 % Thickness: minimum 2.5 inch surface	Reservoir layer contributes to structural load support.