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.

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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

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Case Studies

Ability to carry out projects of all sizes

BODPAVE™ 85 & T1000 – Porous car parking (Bristol) T1000 – Ground lining for new access road & apron (Ireland) GEOCELL & T1000 – Erosion control for canal slope (Monmouth and Brecon Canal) GEOCELL & T1000 – Tree-root protection on new access roads (Achnagairn House) GEOCELL & T1000 – Tree-root protection beneath access road (Farnborough)

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Technical Data

Installation Guides

Certifications

Frequently Asked Questions

Are TERRAM products approved by Network Rail and TFL?

All TERRAM PW (Permanent Way), Standard Geotextiles 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.