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PW1
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Blackwater Trading Estate United Kingdom Issue: 03 Date: 03.02.14 Page: 1 of 2 Nonwoven geotextile manufactured from UV stabilised, high tenacity, virgin polypropylene fibres that have been both mechanically and thermally bonded to provide high strength and excellent abrasion characteristics. Terram PW1 filter/separator is designed to maintain separation between the adjacent sand/sub-grade and ballast layers within the trackbed construction, preventing the upward movement of fine sub-grade particles and the intermixing of ballast with the sub-base. TERRAM PW1 is suitable for where sub-grade soils are good, have sufficient strength and the particles are of even size, standard recommendations are based on with a small percentage of coarse particles. <10% by weight >14mm. Engineered to provide high strength and high elongation at break to ensure excellent resistance to damage during construction and under the dynamic loading applied within trackbed. Terram PW1 is manufactured to performance properties, not weight, sufficient fibre will be added to achieve these properties. Manufactured from high tenacity UV stabilised virgin polypropylene fibres which have been heavily drawn to ensure excellent long term durability in all soil types. Manufactured using a randomly orientated web to provide completely isotropic properties, ensuring that high strength is not limited to a single direction. Excellent uniformity with high permeability and low pore size for soil filtration. Network Rail approved PADS No. 057/100555. Test Method 6. PROPERTIES REALTING TO DURABILITY Weathering 50MJ/m2 exposure (1 month EU) Microbiological resistance Resistance to acids & alkalis Oxidation at 85 days (100 years)

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Test Method 7. PHYSCIAL PROPERTIES (nominal) Standard Roll Length Standard Roll Width Maximum Roll Width Gross Roll Weight (nominal)M Terrarm PW1 is supplied on cardboard cores and wrapped in Polyethylene sheeting with identification labels in ac- The rolls of geotextile shall be stored on stable/ level ground and stacked not more than five rolls high and no other materials shall be stacked on top. The rolls can be stored outdoors when packaged, but should be protected from exposure to UV. All materials should be stored in accordance with good health and safety practice and in accordance...

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