Complex geometries Another major advantage of factory fabrication is the ability to prefabricate complex geometries or irregular cells, varying slopes and slope breaks rather than trying to cut and size all the pieces in the field with changing and challenging weather conditions. For example, Figure 3 shows the prefabricated panel layout diagram for a large hydroelectric dam and reservoir that requires many irregularly shaped panels, especially in the corners. The panel layout diagram shows 80 different panels that were factory fabricated and seamed in the field to line this 800,000-square-foot (74,322m2) hydroelectric water storage dam and reservoir. The geomembrane used for the project is a 36-mil (0.91-mm) thick FIGURE 3 Panel layout diagram showing 48 different panels for factory fabrication Welding and testing equipment for the serious geosynthetics installer Pro-Wedge VM-20 Wedge Welder Over 6,000 units sold! Pro-Tester High-Pull Tensiometer for testing high-strength materials with new Auto-Engage feature (888) 324-WELD (9353) or 530 621-3200 Visit demtech.com or call for more product information. www.GeosyntheticsMagazine.com 13http://www.demtech.com http://www.GeosyntheticsMagazine.com