Difference between revisions of "Liner"

From LID SWM Planning and Design Guide
Jump to navigation Jump to search
Line 1: Line 1:
 
*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.  
**Similarly, a 50 mm sand layer will protect the membrane from the clear stone being used for drainage inside the BMP.   
+
**Similarly, a 50 mm sand layer should be applied on top of the membrane to protect it from the clear stone being used for drainage inside the BMP.   
 
*Some designs include a concrete cell to prevent infiltration. The longevity of this type of construction may be improved with a coating of liquid waterproofing compound.
 
*Some designs include a concrete cell to prevent infiltration. The longevity of this type of construction may be improved with a coating of liquid waterproofing compound.

Revision as of 13:23, 6 July 2017

  • 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.
    • Similarly, a 50 mm sand layer should be applied on top of the membrane to protect it from the clear stone being used for drainage inside the BMP.
  • Some designs include a concrete cell to prevent infiltration. The longevity of this type of construction may be improved with a coating of liquid waterproofing compound.