Permeable pavements: Construction

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Construction Tasks Table

Construction Stage	Construction Task	Permeable Interlocking Concrete Pavers	Porous Asphalt	Porous Concrete
Pre-Construction	Verification of Siting and LID Design	x	x	x
	Communication and Utilities Coordination	x	x	x
	Installation of ESC and Construction Fencing	x	x	x
	ESC Inspection and Maintenance (ongoing)	x	x	x
Excavation and Mass Grading	Clearing and Grubbing	x	x	x
	Excavation	x	x	x
	Subgrade	x	x	x
	Verification of Grading/Survey*	x	x	x
	Backfill Granular, Utilities and Pipes	Geotextile (if applicable)	x	x	x
Impermeable Liner (if applicable)		x	x
Underdrain (if applicable)		x	x
Overflow or Overflow Drain (if applicable)		x	x	x
Monitoring Well (if applicable)		x	x
Sub-base Reservoir (if applicable)		x	x	x
Base Course		x	x
Filter Layer (if applicable)		x	x
Bedding layer		x	x
Finishing Grades		Placement and Finishing	x	x	x
		Paver Installation	x	x	x
	Tamping	x	x	x
	Joint Cutting	x	x	x
	Joint Aggregate	x	x	x
	Curbing (if applicable)	x	x
	Stabilizing Contributing Drainage Area	x	x
As-built Survey	x	x
Post-Construction	Identify and Address Deficiencies	x	x	x
	Assumption/Certification Protocols	x	x	x

A mixture of mineral aggregates bound with bituminous materials, used in the construction and maintenance of paved surfaces.

Low Impact Development. A stormwater management strategy that seeks to mitigate the impacts of increased urban runoff and stormwater pollution by managing it as close to its source as possible. It comprises a set of site design approaches and small scale stormwater management practices that promote the use of natural systems for infiltration and evapotranspiration, and rainwater harvesting.

Gravel, or crushed stone of various size gradations (i.e., diameter), used in construction; void forming material used as bedding and runoff storage reservoirs and underdrains in stormwater infiltration practices.

Filter fabric that is installed to separate dissimilar soils and provide runoff filtration and contaminant removal benefits while maintaining a suitable rate of flow; may be used to prevent fine-textured soil from entering a coarse granular bed, or to prevent coarse granular from being compressed into underlying finer-textured soils.

A perforated pipe used to assist the draining of soils.

A broad category of particulate material used in construction, including sand, gravel, crushed stone, slag, recycled concrete and geosynthetic aggregates, and available in various particulate size gradations.