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Where speed meets strength.

L/480 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" 139 104 87 70 202 145 117 89 231 167 135 103 231 167 135 103
11'-1" 110 83 69 55 178 127 102 77 202 145 117 89 202 145 117 89
12'-1" 86 65 54 43 141 106 87 65 171 127 102 77 178 127 102 77
13'-1" 70 53 44 35 115 86 72 55 142 107 89 67 159 113 90 67
14'-1" 58 43 36 29 90 67 56 45 114 86 70 51 143 101 80 59
15'-1" 48 36 30 24 77 58 48 38 96 72 60 47 135 95 75 55
16'-1" 66 49 41 33 66 49 41 33 80 60 50 35 132 93 73 53
17'-1" 54 41 34 27 78 55 41 28 68 51 41 28 159 113 90 67
18'-1" 46 35 29 23 67 49 37 25 80 60 46 32 139 103 85 63
19'-1" 40 30 25 20 70 53 42 29 69 52 39 27 118 82 69 47
20'-1" 59 44 37 28 60 45 34 23 112 84 70 56
21'-1" 51 38 32 25 62 47 39 28 88 66 55 43
22'-1" 45 34 28 20 56 42 34 23 80 60 50 40
23'-1" 48 36 30 19 75 56 47 38
24'-1" 43 32 27 21 70 52 44 35
25'-1" 64 48 40 32
26'-1" 60 45 38 30
27'-1" 54 40 34 27
28'-1" 48 36 30 24
29'-1" 41 31 26 21
  • 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.