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   Willamette  StrucJoist SJ-32-42-55  

StrucJoist SJ-32-42-55 - Page 6

 

 

TABLE VII
 

SJ-32 Roof Load Table

Allowable Load in Pounds per Lineal Foot

Span

(ft)

9-1/2" 11-7/8" 14" 16"
Deft l/240 Total Load Defl l/240 Total Load Defl l/240 Total Load Defl l/240 Total Load
115% 125% 115% 125% 115% 125% 115% 125%
10   233 253   270 294   270 294   270 294
11   193 210   246 267   246 267   246 267
12   163 177   218 236   226 245   226 245
13   139 151   186 202   209 227   209 227
14   120 131   161 175   194 211   194 211
15   105 114   140 152   181 197   181 197
16   92 100   123 134   170 185   170 185
17   82 89   110 119   160 174   160 174
18   73 80   98 106   151 165   151 165
19 63 66 72   88 96   144 156   144 156
20 55 59 65   79 86   136 148   136 148
21 48 54 59   72 78   130 141   130 141
22 42 49 54   66 72   119 130   124 135
23 37 45 49   60 65 106 109 119   119 129
24 32 41 43 54 55 60 94 101 109   114 124
25 29 38 38 48 51 56 84 93 101   109 118
26       43 47 51 75 86 93   101 110
27       39 44 48 67 80 87 91 94 102
28       35 41 44 60 74 80 82 87 95
29       31 38 41 55 69 73 74 81 88
30       28 36 38 50 65 66 67 76 82
31           35 45 60 60 61 71 77
32             41 55 55 56 67 73
33             38 50. 50 51 63 68
34             35 46 46 47 59 62
35             32 42 42 43 56 57
36             29 39 39 40 53 53
37             27 36 36 37 49 49
38                   34 45 45
39                   31 42 42
40                   29 39 39

 

  SJ-42 Roof Load Table

Allowable Load in Pounds per Lineal Foot

Span

(ft)

9-1/2" 11-7/8" 14" 16"
Defl l/240 Total Load Defl l/240 Total Load Defl l/240 Total Load Defl l/240 Total Load
115% 125% 115% 125% 115% 125% 115% 125%
10   253 275   288 313   288 313   288 313
11   231 251   262 285   262 285   262 285
12   212 230   241 262   241 262   241 262
13   196 213   223 242   223 242   223 242
14   182 198   207 225   207 225   207 225
15   170 185   193 210   193 210   193 210
16   160 173   182 197   182 197   182 197
17 137 150 163   171 186   171 186   171 186
18 118 142 154   162 176   162 176   162 176
19 101 135 135   153 166   153 166   153 166
20 88 117 117 144 146 158   146 158   146 158
21 76 102 102 126 139 151   139 151   139 151
22 67 89 89 111 132 144   132 144   132 144
23 59 79 79 98 126 131   127 138   127 138
24 52 70 70 87 116 116   122 132   122 132
25 47 62 62 77 103 103 112 117 127   117 127
26 42 56 56 69 92 92 100 112 122   112 122
27 37 50 50 62 83 83 90 108 118   108 118
28 34 45 45 56 75 75 81 104 108   104 113
29 30 41 41 51 68 68 74 98 98 99 101 110
30 28 37 37 46 61 61 67 89 89 90 97 106
31       42 56 56 61 81 81 82 94 102
32       38 51 51 56 74 74 75 91 99
33       35 47 47 51 68 68 68 89 91
34       32 43 43 47 62 62 63 84 84
35       30 39 39 43 57 57 58 77 77
36       27 36 36 40 53 53 53 71 71
37             37 49 49 49 66 66
38             34 45 45 46 61 61
39             31 42 42 42 57 57
40             29 39 39 39 53 53

 

  SJ-55 Roof Load Table

Allowable Load in Pounds per Lineal Foot

Span

(ft)

11-7/8" 14" 16"
Defl l/240 Total Load Defl l/240 Total Load Defl l/240 Total Load
115% 125% 115% 125% 115% 125%
10   315 342   315 342   315 342
11   287 312   287 312   287 312
12   264 286   264 286   264 286
13   244 265   244 265   244 265
14   226 246   226 246   226 246
15   212 230   212 230   212 230
16   199 216   199 216   199 216
17   187 203   187 203   187 203
18   177 192   177 192   177 192
19   168 182   168 182   168 182
20   159 173   159 173   159 173
21 143 152 165   152 165   152 165
22 125 145 158   145 158   145 158
23 110 139 147   139 151   139 151
24 98 131 131   133 145   133 145
25 87 116 116 126 128 139   128 139
26 78 104 104 113 123 133   123 133
27 70 93 93 101 118 129   118 129
28 63 84 84 91 114 122   114 124
29 57 76 76 83 110 110   110 120
30 52 69 69 75 100 100 101 107 116
31 47 63 63 68 91 91 92 103 112
32 43 57 57 62 83 83 84 100 109
33 39 52 52 57 76 76 77 97 103
34 36 48 48 52 70 70 71 94 94
35 33 44 44 48 64 64 65 87 87
36 30 41 41 44 59 59 60 80 80
37 28 37 37 41 55 55 55 74 74
38 26 35 35 38 50 50 51 68 68
39       35 47 47 47 63 63
40       33 43 43 44 59 59

Notes:

  1. All roof joists to be sloped 1/4" per foot minimum and use of these tables is limited to roof slopes of 3 1/2" per foot maximum. Use StrucJoist roof span table for greater slopes.
  2. Total load values are based on single joists spaced at 24" o.c. or less (repetitive member). Double joists should be designed using StrucJoist design properties.
  3. Total load deflection is limited to L/180. For stiffer deflection criteria, use the L/240 column.
  4. Allowable loads shown may be used for simple or multiple spans. Outermost spans in multiple-span applications must be at least 40% of adjacent span.
  5. Spans are based on clear distance between supports.
  6. Web stiffeners are required at interior supports of multiple spans.
  7. Contact Willamette Technical Support at 1 -800-942-9927 for applications with holes.

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