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Where speed meets strength.

L/360 Deflection, 25lb. Dead Load
Values shown are in pounds per square foot (psf)
Clear Span 9-1/4" Depth
o.c. Spacing
11-7/8" Depth
o.c. Spacing
14" Depth
o.c. Spacing
16" Depth
o.c. Spacing
12" 16" 19.2" 24" 12" 16" 19.2" 24" 12" 16" 19.2" 24" 12" 16" 19.2" 24"
10'-1" 173 124 99 74 202 145 117 89 231 167 135 103 231 167 135 103
11'-1" 147 107 85 63 178 127 102 77 202 145 117 89 202 145 117 89
12'-1" 115 86 72 55 154 109 87 65 178 127 102 77 178 127 102 77
13'-1" 94 71 59 45 135 95 75 55 159 113 90 67 159 113 90 67
14'-1" 77 58 48 37 119 83 65 47 127 89 70 51 143 101 80 59
15'-1" 64 48 40 31 102 71 55 39 119 83 65 47 135 95 75 55
16'-1" 86 65 50 35 88 61 47 33 95 65 50 35 132 93 73 53
17'-1" 72 54 45 36 81 55 41 28 80 54 41 28 159 113 90 67
18'-1" 61 46 37 25 74 49 37 25 89 61 46 32 151 107 85 63
19'-1" 53 40 33 23 82 55 42 29 78 52 39 27 118 82 64 47
20'-1" 78 55 41 28 70 46 34 23 117 81 64 46
21'-1" 67 49 37 25 80 54 41 28 111 77 60 43
22'-1" 59 43 31 20 70 46 34 23 138 97 77 57
23'-1" 63 41 30 19 94 70 59 42
24'-1" 58 43 32 21 84 63 53 37
25'-1" 73 55 46 32
26'-1" 73 55 46 32
27'-1" 65 49 41 29
28'-1" 64 48 40 27
29'-1" 56 42 35 23
  • Consult Open Joist™ Engineering for allowable loads at clear span ranges not shown.
  • Special Engineering Note: Open Joist trusses may be manufactured with components that provide increased structural values that may exceed the performance levels indicated in these charts.