2 u2014 second high aspect ratio samples in a second set of high aspect ratio rib samples configured according to the present invention the starting material 11 shown in fig6 was a strictly uniplanar sheet of extruded plastics material having planar parallel faces holes or depressions 12 are punched to form a square or rectangular array to produce the multi axial geogrid product from the punched sheet the starting material 11 was heated and biaxially stretched as described above in these samples the resulting multi axial geogrid consists of square or rectangular apertures with ribs or strands that meet at each junction with angles at approximately 90 u00b0 the above table 2 presents geogrid samples 23 through 28 to illustrate the instant invention using rectangular apertures comparative example c3 is a biaxial geogrid with square apertures sold commercially as tensar type ss 30 and c4 is a similarly produced commercial product with rectangular apertures sold as tensar bx1100 samples 23 through 25 are additional comparative examples with ar less than 1 0 that are included for reference samples 26 through 28 were produced according to the instant invention with a high aspect ratio rib cross section in order to increase the rib aspect ratio for samples 26.