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12" Rib (R Panel)

12" Rib (R Panel)

The 12" Rib Panel is a high strength, deep, wide panel. The R Panel is ideal for roofing and siding applications due to its extreme durability and aesthetically pleasing appearance.  12” Rib is available in stainless steel, galvalume, and aluminum.

Allowable Uniform Loads In Pounds Per Square Foot
Thickness # Spans Span Length
3' 3'6" 4' 4'6" 5' 5'6" 6' 6'6" 7' 7'6" 8' 8'6" 9' 9'6" 10'
18 Ga 1 Defl. 216 158 121 96 77 64 54 46 39 34 30 26 24 21 19
0.10" 0.14" 0.18" 0.23" 0.29" 0.35" 0.41" 0.48" 0.56" 0.64" 0.73" 0.83" 0.93" 1.03" 1.14"
3 Delf. 253 185 142 112 91 75 63 53 46 40 35 31 28 25 22
0.07" 0.10" 0.13" 0.16" 0.20" 0.25" 0.29" 0.34" 0.40" 0.46" 0.52" 0.59" 0.66" 0.73" 0.81"
20 Ga 1 Delf. 159 117 89 71 57 47 39 34 29 25 22 19 17 15 14
0.10" 0.14" 0.18" 0.23" 0.29" 0.35" 0.41" 0.48" 0.56" 0.64" 0.73" 0.83" 0.93" 1.03" 1.14"
3 Delf. 183 135 103 81 66 54 45 39 33 29 25 22 20 18 16
0.08" 0.10" 0.13" 0.17" 0.21" 0.25" 0.30" 0.36" 0.41" 0.47" 0.54" 0.61" 0.68" 0.76" 0.84"
22 Ga 1 Defl. 160 117 90 71 57 47 40 34 29 25 22 19 17 16 14
0.14" 0.19" 0.24" 0.31" 0.38" 0.46" 0.55" 0.64" 0.75" 0.86" 0.97" 1.10" 1.23" 1.37" 1.52"
3 Delf. 193 142 108 86 69 57 48 41 35 31 27 24 21 19 17
0.11" 0.15" 0.19" 0.24" 0.30" 0.36" 0.43" 0.51" 0.59" 0.68" 0.77" 0.87" 0.97" 1.08" 1.20"
24 Ga 1 Defl. 117 86 66 52 42 35 29 25 21 18 16 14 16
0.14" 0.18" 0.24" 0.30" 0.38" 0.46" 0.54" 0.64" 0.74" 0.85" 0.96" 1.09" 1.22"
3 Delf. 137 100 77 61 49 40 34 29 25 22 19 17 15 13 12
0.10" 0.14" 0.18" 0.23" 0.29" 0.35"

0.41"

0.49" 0.56" 0.65" 0.74" 0.83" 0.93" 1.04" 1.15"
26 Ga 1 Defl. 75 55 42 33 27 22 18 16 13 12
0.13" 0.18" 0.24" 0.30" 0.37" 0.45" 0.53" 0.62" 0.72" 0.83"
3 Delf. 89 65 50 39 32 26 22 19 16 14 12
0.10" 0.14" 0.18" 0.23" 0.28" 0.34" 0.41" 0.48" 0.55" 0.63" 0.72"

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CADdetails.com is a great resource for JRS design files configured for different CAD programs.  If you have a project requiring Corrosion Resistant Architectural Metals, specifying James River Steel roofing siding and decking is one of the easiest things you can do. It’s free, it’s very comprehensive, and they don’t spam.