Difference between revisions of "Liner"
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+ | A liner is sometime incorporated into non-infiltrating practices such as [[stormwater planters]], or has also been applied in [[permeable pavements]] installations where seperation from the native soils and groundwater was required. | ||
*Waterproof containment can be created using a plastic membrane/liner (HDPE or EPDM are common materials). | *Waterproof containment can be created using a plastic membrane/liner (HDPE or EPDM are common materials). | ||
**When the membrane is being used directly in the ground, punctures from stones can be prevented by compacting a layer sand (30 - 50 mm) over the soil prior to installing the membrane. | **When the membrane is being used directly in the ground, punctures from stones can be prevented by compacting a layer sand (30 - 50 mm) over the soil prior to installing the membrane. | ||
− | ** | + | **Alternatively, a manufactured cushion fabric (geotextile) can be employed for this purpose. |
− | * | + | **The top surface of the membrane must also be protected from stone and gravel being used for inside the BMP. Again, sand or a cushion fabric may be used. |
+ | *When a pipe is used to provide drainage from the BMP cell, a 'pipe boot' should be sealed to both the pipe and the liner to prevent leaks. | ||
+ | [[Category:Materials]] |
Revision as of 18:04, 6 August 2020
A liner is sometime incorporated into non-infiltrating practices such as stormwater planters, or has also been applied in permeable pavements installations where seperation from the native soils and groundwater was required.
- Waterproof containment can be created using a plastic membrane/liner (HDPE or EPDM are common materials).
- When the membrane is being used directly in the ground, punctures from stones can be prevented by compacting a layer sand (30 - 50 mm) over the soil prior to installing the membrane.
- Alternatively, a manufactured cushion fabric (geotextile) can be employed for this purpose.
- The top surface of the membrane must also be protected from stone and gravel being used for inside the BMP. Again, sand or a cushion fabric may be used.
- When a pipe is used to provide drainage from the BMP cell, a 'pipe boot' should be sealed to both the pipe and the liner to prevent leaks.