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| '''[[Permeable paving: TTT]]''' | | '''[[Permeable paving: TTT]]''' |
| | | |
− | ===Sizing Stone Reservoirs=== | + | ===Sizing stone reservoirs=== |
| + | The stone reservoir must meet both runoff storage and structural support requirements. |
| + | The bottom of the reservoir should be level so that water infiltrates evenly. If the system is not designed for infiltration, the bottom should slope at 1 - 5% toward the underdrain. |
| + | |
| '''[[Permeable paving: Sizing and modeling]]''' | | '''[[Permeable paving: Sizing and modeling]]''' |
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| Consult the manufacturer for the design specifications of their product. In pervious concrete and porous asphalt systems, the concrete or asphalt mix specifications and construction procedures are key to proper functioning. These systems require well-trained and experienced contractors for installation.<br> | | Consult the manufacturer for the design specifications of their product. In pervious concrete and porous asphalt systems, the concrete or asphalt mix specifications and construction procedures are key to proper functioning. These systems require well-trained and experienced contractors for installation.<br> |
| '''[[Permeable paving: Specifications|Specifications]]''' | | '''[[Permeable paving: Specifications|Specifications]]''' |
− | | + | ==Aggregates== |
− | ====Stone Reservoir====
| + | {{:choker layer}} |
− | The stone reservoir must meet both runoff storage and structural support requirements.
| |
− | The bottom of the reservoir should be level so that water infiltrates evenly. If the system is not designed for infiltration, the bottom should slope at 1 - 5% toward the underdrain.
| |
| {{:Reservoir aggregate}} | | {{:Reservoir aggregate}} |
− | | + | ===Geotextile=== |
− | ====Geotextile====
| |
| {{:Geotextiles}} | | {{:Geotextiles}} |
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| ===Landscaping=== | | ===Landscaping=== |
− | Landscaping plans should reflect the permeable pavement application. Landscaping areas should drain away from permeable pavement to prevent sediments from running onto the surface. Urban trees also benefit from being surrounded by permeable pavement rather than impervious cover, because their roots receive more air and water. Permeable pavers used around the base of a tree can be removed as the tree grows.
| + | Landscaped areas should drain away from permeable paving to prevent sediments from running onto the surface. Urban [[trees]] benefit from being surrounded by permeable pavement rather than impervious cover, because their roots receive more air and water, and pavers used around the base of a tree can be removed as the tree grows. |
| | | |
| ==Performance== | | ==Performance== |