DuraForce® WG Series Geotextile
DuraForce woven geotextiles are suited to applications where the primary function is one of separation with a secondary benefit of reinforcement.
DuraForce® AS series geotextile is manufactured and tested to exact quality standards and rated according to the NZTA F/7 specification for geotextiles.
There is an extensive range of geotextiles available. Due to the process by which they are manufactured, different performance capabilities can be achieved. Frequently there will be a secondary function required of the geotextile as well as the primary function, e.g. drainage as the primary function and separation as the secondary.
Nonwoven needle-punched geotextiles are manufactured from the extrusion of fibres which are laid down on a manufacturing ‘bed’ and then needle punched. This manufacturing process allows for the use of nonwoven geotextiles in applications of drainage, filtration and protection.
Filtration, separation and reinforcement.
Needle punched is preferable for filtration, and woven is tougher for reinforcement.
Both will effectively separate soil layers.
Woven geotextiles are usually compared by tensile strength which we read on the data sheet. Nonwoven needle punched geotextiles are usually graded according to the NZTA specification F/7. For heavier grades which are not in the F/7 specification comparison is most commonly by fabric weight in grams/m² or tensile strength.
Some geotextiles appear thinner than other brands for the same strength class owing to the manufacturing process. If the textile is needled punched further, to get effective interlock of the fibres, it can appear thinner for the same mass and strength. If a geotextile of the same weight appears thicker and fluffier the difference is probably only fresh air, and who wants to pay for fresh air?
As a separation layer between two matierials e.g clay base and GAP40. This will prevent the two materials mixing which wastes expensive aggregate.
For reinforcing/strengthening the ground. This will ensure your surface is more stable for years to come. Particularly useful with peat/unstable clay ground conditions.
For filtration as the geotextile allows the displacement of water across the relevant area.
DuraForce is tested for UV resistance, and achieves greater than 80% retained after 500 hours testing.
In reality this means the product is UV stable for the duration of exposure and working times, but it is not designed to be exposed for years.
No. The grey and black geotextiles have a pigment added, usually to hide imperfections in the raw material due to recycled material being used.
NZTA F/7 gives guidance on overlap of geotextiles, which is dependent on the strength of the subgrade. The minimum recommended overlap is 300mm.
We do not recommend using weedmat in place of geotextile. Weedmat will provide separation between two materials to some extent, however it is typically a light grade, therefore sharp stones used for base course and retaining walls will tend to rip this and render it useless.
Code | Grade | Roll Size | Area |
---|---|---|---|
76017 | AS240 | 1.9m x 50m | 95m² |
76018 | AS240 | 3.9m x 50m | 195m² |
76033 | AS240 | 4m x 100m | 400m² |
76339 | AS240 | 6m x 100m | 600m² |
76021 | AS280 | 1.9m x 50m
| 95m² |
76022 | AS280 | 3.9m x 50m
| 195m² |
76045 | AS280 | 4m x 100m | 400m² |
76342 | AS280 | 6m x 100m | 600m² |
Code | Grade | Roll size | Area |
---|---|---|---|
76023 | AS410 | 1.9m x 50m | 95m² |
76024 | AS410 | 3.9m x 50m | 195m² |
76048 | AS410 | 4m x 100m | 400m² |
76345 | AS410 | 6m x 100m | 600m² |
76050 | AS440 | 4m x 100m | 400m² |
76539 | AS440 | 6m x 100m | 600m² |
76082 | AS640 | 4m x 75m | 300m² |
13661 | AS640 | 6m x 75m | 450m² |
Cirtex Grade | Filtration Class | Strength Class |
---|---|---|
AS240 | 1 – 4 | A |
AS280 | 1 – 4 | B |
AS410 | 1 – 4 | C |
AS440 | 1 – 4 | D |
AS640 | 1 – 4 | E |
DuraForce woven geotextiles are suited to applications where the primary function is one of separation with a secondary benefit of reinforcement.
EnviroForce is a black nonwoven needle punched geotextile primarily used for erosion and sediment control applications i.e spillways and Sediment Retention Ponds.
Filter Plus is a premium nonwoven geotextile filter fabric. With its small roll size, it is used for subsoil drainage filtration and separation, by preventing the intermixing of aggregates and soils in smaller applications.
TerraTex is a range of geotextiles are manufactured using today’s most advanced technology and are specially designed for the harsh conditions found in coastal and shoreline areas.
The NZ Transport Agency’s upgrade of SH20A to motorway standard has provided a safer, more reliable route to and from the airport and has increased freight efficiency around South Auckland.
Drive Crescent in Tauranga was under attack from high flow rates from tidal flow in that area. The project had a short timeframe and needed fast, reliable supply to the site to meet the challenging deadline.
A combination of a supermoon king tide, low-pressure weather system and strong winds made for a perfect storm. The storm hit SH25 between Thames and Coromandel on January 5th, 2018.