Artificial turf system including a geogrid and an existing turf

A method for manufacturing an artificial turf system, comprising:

• placing a geogrid on a used artificial turf, the used artificial turf comprising a plurality of used artificial turf fibers and a used artificial turf backing layer configured to carry the plurality of used artificial turf fibers;
• and
• placing an unused artificial turf on the geogrid, wherein
• the unused artificial turf comprises a plurality of artificial turf fibers and an artificial turf backing layer, said artificial turf backing layer comprising a carrier structure configured to carry the plurality of artificial turf fibers, wherein
• the unused artificial turf is placed on the geogrid such that the backing layer of the unused artificial turf is adjacent to the geogrid,
• wherein the geogrid comprises two or more polymeric grid layers,
• wherein each polymeric grid layer of the two or more polymeric grid layers are formed of a plurality of polymeric strands arranged parallel,
• wherein the used artificial turf has a top surface that is tilted, and
• wherein the method further comprises:
• determining a tilt of the top surface;
• and
• designing a polymeric strand cross section that varies along a length of each polymeric strand of the plurality of polymeric strands of at least one polymeric grid layer to offset the tilt of the top surface such that when the geogrid is placed on the used artificial turf, a top surface of the geogrid is horizontal.