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Trus Joist® TJI® Joist Specifier’s Guide TJ-4000 | April 2016 <br />13 <br />RooF loAd TABle <br />* Indicates that Total Load value controls. <br />Depth TJI® <br />Total Load Defl.Total Load Defl.Total Load Defl.Total Load Defl.Total Load Defl.Total Load Defl. <br />Snow 115% <br />Non- Snow 125% <br />Live Load L/240 Snow 115% <br />Non-Snow 125% <br />Live Load L/240 Snow 115% <br />Non-Snow 125% <br />Live Load L/240 Snow 115% <br />Non-Snow 125% <br />Live Load L/240 Snow 115% <br />Non-Snow 125% <br />Live Load L/240 Snow 115% <br />Non-Snow 125% <br />Live Load L/240 <br />Roof Joist Horizontal Clear Span <br />6'8'10'12'14'16' <br />9½" <br />110 289 314 *218 237 *175 190 *146 159 *114 124 112 88 95 77 <br />210 321 349 *242 263 *194 211 *162 176 *137 149 130 105 115 90 <br />230 360 392 *272 295 *218 237 *182 198 *153 166 143 117 127 99 <br />117⁄8" <br />110 289 314 *218 237 *175 190 *146 159 *125 136 *110 119 * <br />210 321 349 *242 263 *194 211 *162 176 *139 151 *122 132 * <br />230 360 392 *272 295 *218 237 *182 198 *156 170 *137 149 * <br />360 368 400 *277 301 *223 242 *186 202 *159 173 *140 152 * <br />560 449 488 *338 368 *272 295 *227 246 *195 212 *170 185 * <br />14" <br />110 289 314 *218 237 *175 190 *146 159 *125 136 *110 119 * <br />210 321 349 *242 263 *194 211 *162 176 *139 151 *122 132 * <br />230 360 392 *272 295 *218 237 *182 198 *156 170 *137 149 * <br />360 368 400 *277 301 *223 242 *186 202 *159 173 *140 152 * <br />560 449 488 *338 368 *272 295 *227 246 *195 212 *170 185 * <br />16" <br />110 289 314 *218 237 *175 190 *146 159 *125 136 *110 119 * <br />210 321 349 *242 263 *194 211 *162 176 *139 151 *122 132 * <br />230 360 392 *272 295 *218 237 *182 198 *156 170 *137 149 * <br />360 368 400 *277 301 *223 242 *186 202 *159 173 *140 152 * <br />560 449 488 *338 368 *272 295 *227 246 *195 212 *170 185 * <br />18'20'22'24'26'28' <br />9½" <br />110 <br />210 83 86 64 <br />230 93 94 71 <br />117⁄8" <br />110 88 95 91 77 68 <br />210 106 115 106 86 93 79 77 60 <br />230 117 128 116 95 103 86 79 85 66 <br />360 124 135 *112 122 103 102 105 78 82 82 61 <br />560 152 165 *137 148 *124 135 117 114 122 91 97 97 73 79 79 59 <br />14" <br />110 98 106 *84 92 *76 75 <br />210 108 118 *97 106 *84 91 87 77 68 <br />230 122 132 *110 119 *93 101 95 78 85 74 <br />360 124 135 *112 122 *102 111 *93 101 88 86 94 70 76 76 57 <br />560 152 165 *137 148 *124 135 *114 124 *105 114 104 98 106 85 <br />16" <br />110 98 106 *88 96 *80 87 * <br />210 108 118 *97 106 *89 96 *81 88 *75 73 <br />230 122 132 *110 119 *100 108 *90 97 *76 83 79 <br />360 124 135 *112 122 *102 111 *93 101 *86 94 *80 87 76 <br />560 152 165 *137 148 *124 135 *114 124 *105 114 *98 106 * <br />Roof—115% and 125% Load Duration (PLF) <br />How to Use These Tables <br />1. Calculate actual total load in pounds per linear foot (plf). <br />2. Select appropriate Roof Joist Horizontal Clear Span. For slopes greater than <br />2:12, approximate the increased dead load by multiplying the joist horizontal clear <br />span by the Slope Factor above. <br />3. Scan down the column to find a TJI® joist that meets or exceeds actual total load. <br />General Notes <br />■ Tables are based on: <br /> – Minimum bearing length of 1¾" end and 3½" intermediate, without <br />web stiffeners. <br /> – Uniform loads. <br /> – More restrictive of simple or continuous span. <br /> – Minimum roof slope of ¼:12. <br />■ Total Load values are limited to deflection of L/180. For stiffer deflection criteria, <br />use the Live Load L/240 values. <br />Slope 2½:12 3:12 3½:12 4:12 4½:12 5:12 6:12 7:12 8:12 9:12 10:12 11:12 12:12 <br />Factor 1.021 1.031 1.042 1.054 1.068 1.083 1.118 1.158 1.202 1.250 1.302 1.357 1.414 <br />Slope Factors <br />Page 14 <br />2130 N Grand Ave <br />10/1/2024