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Table A1 - Suggested equalization treatments for hardwoods and softwoods (equalizing at final target MC minus 3 pct MC) Wet- bulb temperature at final target moisture contents of – temperature 6 percent 7 percent 8 percent 9 percent 10 percent Dry-bulb - - - - - - - - - - - - - - - - °F - - - - - - 130 85 91 96 101 - - - - - - - - - - 106 115 125 136 146 157 168 - - - - - - - - - - 41 46 51.5 57.5 63.5 69 75.5 140 93 150 100 160 110 170 120 180 130 190 140 - - - 54.5 29.5 60 33 65.5 37.5 71 43.5 76.5 48 82 54.5 87.5 60 100 105 103 115 117 125 127 134 137 145 147 156 111 121 131 141 152 162 - - - - - - - - - - - - - °C - - - - - - 32.5 35.5 37.5 40.5 39.5 46 47 51.5 52.5 56.5 58 62.5 64 69 38.5 43 49.5 55 60.5 66.5 72 Figure A1–Method of cutting transverse test "prongs." (ML87 5492) Table A2–Suggested conditioning (stress relief) treatments for hardwoods and softwoods1 (conditioning at final target MC plus 4 pct MC) Dry-bulb temperature 140 150 160 170 180 190 200 Wet-bulb temperatures at final target moisture content of – 6 percent 7 percent 8 percent 9 percent 10 percent - - - 126 136 146 157 168 178 188 - - - 1 If exact settings cannot be maintained, then strive to obtain comparable wet-bulb depressions and equilibrium MC. 52 57.5 63.5 69 75.5 53 54.5 59 60 65 66 70.5 72 76.5 77 55.5 56 61 61.5 66.5 67.5 72.5 73 78.5 79 84 85 - - - - - - - - - - - - - °F - - - - - - - - - - - - - - - - - - - - - - - - - - - - - °C - - - - - - - - - - - - - - - - 128 130 138 140 149 151 159 161 170 171 180 182 190 193 132 133 142 143 152 154 163 164 173 174 183 185 194 195 60 65.5 71 76.5 82 87.5 81 82 83 93 86.5 87.5 89 90 90.5 Figure A2–Method of cutting to test for longitudinal stress. Bandsaw cuts approximately every 1/8 to 1/4 inch to about one-half the length of the piece being tested. (ML87 5491) 135PDF Image | Dry Kiln Schedules FPL GTR 57
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