Products
Standard Geotextiles
Nonwoven geotextiles to enhance the performance and design life of granular layers by providing filtration and separation functions
Overview
TERRAM Standard Geotextiles are extensively used in stabilisation and drainage applications to provide separation and filtration functions, preventing the intermixing of granular layers and the ingress of fines. Their use ensures an improved performance and design life of granular layers.
Features, Benefits & Design
Product Features
- Made from high tenacity UV stabilised inert virgin polypropylene fibres
- Mechanical entanglement of the fibres using needle punch and thermal bonding technology with very high static and dynamic puncture resistance

- Random orientated web with isotropic properties provide the same high strength, high permeability and excellent filtration in all directions
- Range of pore sizes that can filter different soils from course silt to large gravel whilst allowing the passage of water
- High elongation (strain) at break point (ultimate tensile strength)
- Made from high tenacity UV stabilised inert virgin polypropylene fibres
- Mechanical entanglement of the fibres using needle punch and thermal bonding technology with very high static and dynamic puncture resistance
- Random orientated web with isotropic properties provide the same high strength, high permeability and excellent filtration in all directions
- Range of pore sizes that can filter different soils from course silt to large gravel whilst allowing the passage of water
- High elongation (strain) at break point (ultimate tensile strength)
Product Benefits
- Highly durable in all typical soil conditions with an expected service life in excess of 100 years
- Highly resistant to damage from construction compacting equipment, does not fray or rupture unlike woven geotextiles



- Separation, filtration and protection function maintained at the subgrade/subbase interface even when subjected to radial loads from vehicle wheels
- Extends pavement life by preventing mixing of imported granular fill and allows greater compaction of subbase materials
- Maintains separation and filtration function under high load even in soft and variable strength ground unlike woven geotextiles
- Highly durable in all typical soil conditions with an expected service life in excess of 100 years
- Highly resistant to damage from construction compacting equipment, does not fray or rupture unlike woven geotextiles
- Separation, filtration and protection function maintained at the subgrade/subbase interface even when subjected to radial loads from vehicle wheels
- Extends pavement life by preventing mixing of imported granular fill and allows greater compaction of subbase materials
- Maintains separation and filtration function under high load even in soft and variable strength ground unlike woven geotextiles
Product
Specifications
Technical Data
Product | Unit | Width | Lenght | Colour | Weight (Nominal) | PADS | TERRAM Prt. No. |
---|---|---|---|---|---|---|---|
T700 | Roll | 4.5m | 150m | White | 40kg | - | 153756 |
T700 | Frame (16 rolls) | 4.5m | 50m | White | 700kg | - | 170111 |
T1000 | Roll | 4.5m | 100m | White | 54kg | 057/100703 | 149292 |
T1000 | Frame (16 rolls) | 4.5m | 100m | White | 864kg | - | 149315 |
T1300 | Roll | 4.5m | 100m | White | 70kg | - | 152025 |
T1500 | Roll | 4.5m | 100m | White | 85kg | - | 150434 |
T1500 | Frame (9 rolls) | 4.5m | 100m | White | 790kg | - | 170135 |
T2000 | Roll | 4.5m | 100m | White | 100kg | 57/100705 | 149636 |
T2000 | Frame (9 rolls) | 4.5m | 100m | White | 850kg | - | 152131 |
T3000 | Roll | 4.5m | 100m | White | 112kg | 57/100706 | 150694 |
T4000 | Roll | 4.5m | 50m | White | 74kg | - | 150717 |
T4000 | Frame (9 rolls) | 4.5m | 50m | White | 670kg | - | 170104 |
T4500 | Roll | 4.5m | 50m | White | 90kg | - | 150977 |
Case Studies
Ability to carry out projects of all sizes


Downloads
Technical Data
Installation Guides
Frequently Asked Questions
Are TERRAM products approved by Network Rail and TFL?
All TERRAM PW (Permanent Way), Standard Geotextiles and Hydrotex products hold Network Rail Acceptance certificates and have associated PADS numbers. TFL (Transport for London) and Network Rail require that all suppliers use of a qualification scheme called RISQS (Railway Industry Supplier Qualification Scheme). TERRAM (trading as Fiberweb Geosynthetics Ltd, part of the Berry Group) are registered with RISQS.
What is the difference between a woven and nonwoven (TERRAM) geotextile?
A woven geotextile is manufactured from continuous filaments or strips of synthetic material which are woven together to form a uniform sheet. A woven geotextile has a very uniform pore size which varies under load making them less suitable for filtering anything other than clean single sized soils/fills. Nonwoven geotextiles are a tangled web of fibres mechanically and/or thermally bonded together to form a non-uniform random web. Nonwoven TERRAM geotextiles have a wide range of pore sizes which make them ideally suited for filtering many different types of fill materials including well graded materials even under varying load conditions.
How important is the GSM (grams per SQM) weight of a TERRAM Geotextile?
The most important properties which affect performance of a geotextile are permeability, pore size, puncture resistance and tensile strength. GSM weight of a geotextile is a useful parameter for the purposes of internal quality control. TERRAM geotextiles often achieve the required functional performance at much lower weights compared to other geotextiles due to the exceptional quality control and state of the art manufacturing process.
What is a TERRAM Geotextile used for?
TERRAM geotextiles are predominantly used for separation and filtration of fill materials preventing intermixing and extending the service life of unbound materials. TERRAM geotextiles can also be used to provide puncture resistance and reinforcement in certain applications.
How do you joint Geotextiles?
Jointing TERRAM geotextiles can be achieved by overlapping, sewing, stapling or bonding. The simplest and most common jointing method is overlapping with overlap widths varying between 300mm and 1m depending upon the ground conditions and function of the geotextile. Please refer to TERRAM specification, design and installation guidance for more details.
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