GEOWEB® SOIL STABILIZATION SYSTEM
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SOIL STABILIZATION SYSTEM MATERIAL SPECIFICATION PRESTO GEOSYSTEMS 670 N PERKINS STREET, APPLETON, W ISCONSIN, USA 54914 Ph: 920-738-1328 or 800-548-3424 ■ Fax: 920-738-1222 e-mail: INFO@PRESTOGEO.COM WWW .PRESTOGEO.COM/ CD 8 EFFECTIVE DATE FEB 7, 2017 REVISION 9 © 2017 PRESTO GEOSYSTEMS This specification is copyrighted and based on the use of Genuine Geoweb® manufactured by Presto Products Company (Presto Geosystems). Any use of this specification for any product other than that manufactured by Presto Products Company is strictly prohibite

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GEOSYSTEMS GEOWEB® SYSTEM MATERIAL SPECIFICATION Perforated Geoweb® System Performance & Material Specification Summary Property Test Method Material Composition Base Material Color Minimum ESCR Sheet Thickness Black - from Carbon Black Carbon black content 1.5% - 2% by weight Tan, Green, Other Colors with no heavy metal content Hindered amine light stabilizer (HALS) 1.0% by weight of carrier Performance: The polyethylene strips shall be textured and perforated such that the peak friction angle between the surface of the textured / perforated plastic and #40 silica sand at 100% relative...

PRESTO GEOWEB® SYSTEM MATERIAL SPECIFICATION Manufacturing Certification Presto Geosystems shall have earned a certificate of registration, which demonstrates that its quality-management system for its Geoweb (geocell) cellular confinement system is currently registered to the ISO 9001:2008 quality standards. The scope of the ISO 9001:2008 registration shall be for the sale, design and manufacture of Geoweb cellular confinement system (geocell) product from incoming raw materials (resin) to finished product. Earned registration shall be verifiable by providing a copy of the current...

PRESTO GEOWEB® SYSTEM MATERIAL SPECIFICATION Geoweb Material Properties Specifier Choice for Material Properties The specifier shall state the desired color. The color determines which ultraviolet light stabilizer is to be used. Polyethylene stabilized with carbon black is used for most applications. Colored polyethylene stabilized with HALS is generally used for the fascia strip for Geoweb earth retention systems. NOTE: All measurements and colorants are subject to manufacturing tolerances unless otherwise stated. Polyethylene - Stabilized with Carbon Black Polyethylene used to make strips...

GEOSYSTEMS GEOWEB® SYSTEM MATERIAL SPECIFICATION 140 - 200 per in2 (22 - 31 per cm2). The thickness of the textured sheet shall be 60 mil ±6 mil (1.52 mm ±0.15 mm) determined in accordance with ASTM D5199. The perforations shall be horizontal rows of 0.4 in (10 mm) diameter holes. Perforations within each row shall be 0.75 in (19 mm) on-center. Horizontal rows shall be staggered and separated 0.5 in (12 mm) relative to the hole centers. The edge of strip to the nearest edge of perforation shall be 0.3 in (8 mm) minimum and the centerline of the weld to the nearest edge of perforation shall...

GEOSYSTEMSCell Expansion GEOWEB® SYSTEM MATERIAL SPECIFICATION The Geoweb cell expansion is variable and defined by cell width and cell length as shown in Figure 1. Cell Size, Density, and Area The individual cells of the GW(TT)V Geoweb section shall have variable dimensions depending on expansion. The nominal cell dimensions, density and nominal area are provided in Table 2. Table 2 Cell Size, Density and Area The Geoweb section shall have a nominal cell depth of (D). Short-term seam peel strength shall be tested in accordance with Appendix A. Long-Term Seam Peel-Strength Test Long-term...

GEOSYSTEMS GEOWEB® SYSTEM MATERIAL SPECIFICATION 10,000-hour Seam Peel Strength Certification Presto Geosystems shall provide data showing that the high-density polyethylene resin used to produce the Geoweb sections has been tested using an appropriate number of seam samples and varying loads to generate data indicating that the seam peel strength shall survive a loading of at least 209 lbf (95 kg) for a minimum of 10,000 hours. Geoweb Section Properties Section Expansion Minimum Expansion Maximum Expansion Nominal Cells Length Width Length Width Area GW30V Geoweb...

GEOSYSTEMS GEOWEB® SYSTEM MATERIAL SPECIFICATION Table 4 Available GW30V Geoweb Section Dimensions - 8 Cells Wide As shown in Figure 3, the ATRA Stake Clip is a molded, high-strength polyethylene device available in standard (0.5 inch) and metric (10-12mm) versions. The ATRA Stake Clip can be used for the following purposes: ATRA Stake Clips installed as an end cap on No. 4 rebar stakes or 10-12 mm rods forms ATRA Anchors as shown in Figure 4. The ATRA Anchor provides anchorage by engaging the arm of the ATRA Stake Clip over the top of the cell wall as shown in Figure 5. Figure 4 ATRA® Anchor

PRESTO GEOWEB® SYSTEM MATERIAL SPECIFICATION To provide additional anchorage, ATRA Anchors may be used in conjunction with tendons. The arm of the ATRA Stake Clip is engaged with the tendon and the ATRA Anchor is driven flush with the base of the cell as shown in Figure 6. Figure 6 ATRA® Anchor over Tendon The ATRA® Tendon Clip As shown in Figure 7, the ATRA Tendon Clip is a molded, high-strength polyethylene device with a locking member and post for tendon anchorage. The ATRA tendon clip is the recommended anchorage connection method for securing Geoweb sections and tendons. As shown in...

GEOSYSTEMS GEOWEB® SYSTEM MATERIAL SPECIFICATION Integral Tendons Specifier Choice for Tendons If required, the specifier shall state which tendon is to be used to anchor the Geoweb sections. The tendon strength must meet the design requirements for the application. The specifier shall also include ATRA® Tendon Clips for load transfer. PolypropyleneTendons The polypropylene tendon shall be manufactured from bright yellow, high-tenacity, industrial-continuous filament polypropylene yarn woven into a braided strap. The tendon reference name, diameter/width and minimum break strength shall be...