Figure: 30 TAC 285.33(b)(1)(E)

                                                                        Minimum values

                                                                        Weight oz/sq yd (ASTM D3776)                                                      0.70
                                                                        Grab Strength lbs (ASTM D4632)                                                    11
                                                                        Air Permeability cfm/sq ft (ASTM D737)                                         500
                                                                        Water Flow Rate gpm/sq ft @ 3" head (ASTM D4491)                     33
                                                                        Trapezoidal Tear Strength Lbs (ASTM D4533)                                 6