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Impermeable banks for canals, ponds and artificial basins

Impermeable membranes (polymeric or mineral clay) used to seal canals, ponds, and artificial basins in general, must be protected from both mechanical puncturing and from attack by UV rays, and if possible, the part above water needs to be covered by vegetation. Both these needs can be satisfied by using the TENAX TENWEB honeycomb shaped structure, capable of retaining a sufficient thickness of topsoil to ensure surface stability is maintained. The cellular structure can be filled above the water line with topsoil and, in the submerged section, with dredged gravel and/or concrete, and can be successively covered with a TENAX ECOMAT biomat and then hydro-seeded.

 
TENAX TENWEB installed as liner protection for water retention pond
Brunico (BZ), Italy
TENAX TENWEB installed as liner protection for water retention pond
  TENAX TENWEB installed as liner protection for water retention pond
Brunico (BZ), Italy
TENAX TENWEB planted with marginal plants on a river bank
  The completed installation of TENAX TENWEB for the liner protection of a water retention pond
Brunico (BZ), Italy
The completed installation of TENAX TENWEB for the liner protection of a water retention pond



Puncturing of the membrane cannot be allowed and therefore the use of fixing stakes cannot be allowed. It is therefore necessary to use a TENAX LBO SAMP reinforcing geogrid beneath the geocell panels for the dual purpose of guaranteeing the required tensile strength and allowing connection of the geocell walls by cable ties or other means. This system provides a completely stable integral structure.
The soil, confined by the honeycomb shaped structures, becomes very resistant to distributed loads and to the puncturing activity of concentrated loads. The structure in general permits the increase in the bearing capacity of the soil layer in which it is placed, offering optimal shock resistance from moving loads and therefore efficiently safeguarding the underlying impermeable layer.

 
TENAX TENWEB used to line ornamental ponds in parks and golf courses.   Ornamental pond fully grassed 10 weeks after installation of TENAX TENWEB.   Usmate (MI), Italy:
TENAX TENWEB used to line ornamental ponds in parks and golf courses.

Ornamental pond fully grassed 10 weeks after installation of TENAX TENWEB.
     
SCHEMATIC EXAMPLE
 
PRODUCTS
TENAX TENWEB
TENAX ECOMAT
 
TECHNICAL DOCUMENTS
TDE001: Erosion Control - The Design with TENAX TENWEB geocells (1995) (77kb )
TDE002: The design method for three-dimensional geocells on slopes (Singapore 1994) (1260kb)
TENAX International B.V. • Geosynthetics Division
Via Ferruccio Pelli, 14 CH-6900 Lugano, Switzerland • Tel +41+91.9242485 • Fax +41+91.9242489

geo@tenax.net

TENAX SpA - Geosynthetics Technical Office (GTO)
Viale Monza, 1- 20125 Milano (MI), Italy • Tel. +39 02.26113532 • Fax +39 02.28971107

gto@tenax.net

TENAX SpA • Divisione Geosintetici
Via dell'Industria, 3 • I-23897 Viganò (LC), Italia • Tel +39 039.9219307 • Fax +39 039.9219200

geo@tenax.net

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