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   Willamette  StrucJoist SJ-15-25-35  

StrucJoist - Page 6

 

 

TABLE VII
StrucJoist Roof Load Table
Allowable Load in Pounds per Lineal Foot
Joist Span  (ft) SJ - 15
9-1/2" 11-7/8"
Defl. L/240 Total Snow 115% Load Non- Snow 125% Defl. L/240 Total Snow 115% Load Non- Snow 125%
6   288 314   288 314
7   248 270   248 270
8   218 237   218 237
9   195 211   195 211
10   176 191   176 191
11   160 174   160 174
12   147 160   147 160
13   136 148   136 148
14 124 126 137   126 137
15 103 114 124   118 128
16 85 101 109   111 120
17 72 89 96   104 113
18 61 80 82   98 107
19 52 70 70 89 93 101
20 45 60 60 77 87 94
21 39 52 52 67 79 86
22 34 46 46 58 72 78
23 30 40 40 51 66 69
24 27 36 36 46 61 61
25       40 54 54
26       36 48 48
27       32 43 43
28       29 39 39
29       26 35 35
30            
31            
32            
33            
34            

 

SJ -25
Joist Span (ft) 9-1/2" 11-7/8" 14" 16"
Defl. L/240 Total Snow 115% Load Non- Snow 125% Defl. L240 Total Snow 115% Load Non- Snow 125% Defl. L/240 Total Snow 115% Load Non- Snow 125% Defl. L/240 Total Snow 115% Load Non- Snow 125%
6   314 341   314 341   314 341   314 341
7   270 294   270 294   270 294   270 294
8   237 258   237 258   237 258   237 258
9   211 230   211 230   211 230   211 230
10   191 207   191 207   191 207   191 207
11   174 189   174 189   174 189   174 189
12   160 173   160 173   160 173   160 173
13   148 160   148 160   148 160   148 160
14   137 149   137 149   137 149   137 149
15 117 128 139   128 139   128 139   128 139
16 98 119 129   120 131   120 131   120 131
17 83 105 110   113 123   113 123   113 123
18 70 94 94   107 116   107 116   107 116
19 60 80 80 101 101 110   101 110   101 110
20 52 69 69 88 96 105   96 105   96 105
21 45 60 60 76 92 100   92 100   92 100
22 40 53 53 67 84 89   88 95   88 95
23 35 46 46 59 77 78   84 91   84 91
24 31 41 41 52 69 69 76 81 88   81 88
25 27 36 36 46 62 62 68 77 84   77 84
26       41 55 55 61 74 81   74 81
27       37 49 49 54 69 73   72 78
28       33 44 44 49 64 65 67  69 75
29       30 40 40 44 59 59 61 67 73
30       27 36 36 40 54 54 55 65 70
31              37 49 49 50 62 67
32             33 44 44 46 58 61
33             30 41 41 42 55 56
34             28 37 37 38 51 51

 

Joist Span (ft) SJ - 35
11-7/8" 14" 16"
Defl. L/240 Total Snow 115% Load Non- Snow 125% Defl. L/240 Total Snow 115% Load Non- Snow 125% Defl. L/240 Total Snow 115% Load Non- Snow  125%
6   370 382   370 402   370 402
7   319 329   319 346   319 346
8   280 289   280 304   280 304
9   249 258   249 271   249 271
10   225 232   225 245   225 245
11   205 212   205 223   205 223
12   188 194   188 205   188 205
13   174 180   174 189   174 189
14   162 167   162 176   162 176
15   151 156   151 164   151 164
16   142 146   142 154   142 154
17   134 138   134 145   134 145
18   126 130   126 137   126 137
19   120 124   120 130   120 130
20 111 114 118   114 124   114 124
21 97 108 112   108 118   108 118
22 85 104 107   104 113   104 113
23 75 99 100   99 108   99 108
24 66 88 88   95 103   95 103
25 59 79 79 86 91 99   91 99
26 53 70 70 77 88 95   88 95
27 47 63 63 69 84 92   84 92
28 43 57 57 62 82 83   82 89
29 39 51 51 56 75 75 76 79 86
30 35 47 47 51 68 68 69 76 83
31 32 42 42 46 62 62 63 74 80
32 29 39 39 42 56 56 57 71 77
33 26 35 35 39 52 52 53 69 70
34       36 47 47 48 64 64

Notes:

  1. All roof joists to be sloped 1/4" per foot minimum.
  2. Use of these tables should be limited to roof slopes of 3-1/2" per foot maximum. For greater slopes, refer to the StrucJoist roof span tables.
  3. Total load deflection is limited to L/180. For stiffer deflection criteria, use the L/240 column.
  4. Total load values are based on joists spaced 24" o.c. or less, with increased moment capacity for repetitive member usage.
  5. Table values are for single joist use only. Double joists should be designed using StrucJoist design properties.
  6. Allowable loads shown may be used for simple or multiple spans. Outermost spans in multiple span applications must be at least 40% of adjacent spans.
Please see the SJ-15 SJ-25 SJ-35 Installation Guide for additional information.

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