US Patent 9777455 Water-permeable woven geotextile

A water-permeable woven geotextile fabric for providing soil reinforcement and/or stabilization, for example as an underlayment in road construction, utilizes a series of round warp fibers, in combination with a series of flat warp fibers, across the width of the fabric to increase water flow while still providing desired filtration. In particular, the round warp fibers form angles that allow greater amounts of water to pass through the fabric. In addition, using both round and flat warp fibers results in increased roughness of the fabric surface, which makes the fabric more resistant to being pulled out of the soil when pulled on. Furthermore, one or more of the round and/or flat warp fibers can include a color selected for high visibility to the human eye in daylight conditions.