The product Rooters selected was a woven slit film geotextile, GEOTEX® 200ST produced by Propex®. The polypropylene woven fabric with low elongations and a tensile strength of 200 lbs. is packaged in 12.5' x 432', 15' x 360' and 17.5' x 360' rolls and is easy to install by hand, making it ideal for this type of construction. After clearing the site and smoothing the subgrade, Rooters simply laid rolls of GEOTEX® 200ST across the subgrade with overlaps along the row. Propex® recommends overlaps of no less than 12" on stable soils and up to 36" of overlap on soft soils. Aggregate was then deposited over the geotextile and spread by a grader to a thickness of 12 inches. The layers of subgrade and aggregate were immediately separated ultimately providing long-term pavement performance. After the base was compacted, the parking lot was paved and ready to withstand the heavy load of vehicle traffic.
Woven geotextiles, like GEOTEX® 200ST, have a remarkable capacity for filtering soils, distributing loads, reducing rutting and extending the life of paved lots. Made from individual yarns woven together to provide a dimensionally stable geotextile, GEOTEX® 200ST is resistant to ultraviolet (UV) degradation and to biological and chemical environments normally found in soils. GEOTEX® 200ST is backed by decades of in-field performance in everything from separation and filtration to erosion control and waste containment applications.