Propex’s guides “Geotextile for Geomembrane Cushioning” and “Geosynthetic Reinforcement for Lining System Support” have been posted for free downloading at WaterOnline.com. The documents provide specification assistance for designers and have been written in accordance with CSI’s Manual of Practice. You can find the Cushioning page and the Reinforcement page in the list of Propex’s downloads via the link below.