GEOMEMBRANES,WATER FEATURES and CONTAINMENT LAGOONS

The most common synthetic membranes used for ponds, lakes and lagoons are polyethylenes of high (HDPE) or low density (LDPE), also Polypropylene. LDPE or Polypropylene are preferable if the design is an irregular shape and precise detailing is required. Where rapid installation is required, it is possible to prefabricate in a reinforced Keytec 642 liner.

APPLICATION

Both LDPE and Polypropylene have the distinct advantages over HDPE because of their flexibility. Whereas HDPE is a more rigid membrane with much less flexibility, it has a slightly better puncture resistance and slightly improved chemical resistance above LDPE.

It is recommended that the soil conditions should be taken into consideration when selecting a membrane, and that a geotextile is used to protect against sharp and angular stones underneath and on top of the membrane, when back filling. We will be pleased to offer our advice on the grade to use with each membrane application.

Advice is also available on waterfall detail, pipe entries and fixing structures. For design assistance and information advice contact us.