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IronRidge June 16,20 T 4" <br /> Mr. David F. Taggart Page 8 of 11 <br /> IronRidge XR1000 Rail, Roof Flush Mounting System— Structural Analysis <br /> Table 7 - MAXIMUM SPANS (inches) - Roof Slope 28 to 45 Degrees-Wind Zone 1 <br /> XR1000 Wind Ground Snow Load <br /> Rail Speed <br /> Exposure mph 0 psf 10 psf 20 psf 30 psf 40 psf 50 psf 60 psf 70 psf 80 psf 90 psf <br /> 100 140 128 110 98 87 79 72 67 63 60 <br /> 105 140 128 110 98 87 79 72 67 63 60 <br /> 110 139 127 110 98 87 79 72 67 63 60 <br /> 120 132 123 107 96 87 79 72 67 63 60 <br /> Category 130 126 119 104 94 86 79 72 67 63 60 <br /> B 140 120 115 102 92 85 79 72 67 63 60 <br /> 150 114 111 99 90 83 78 72 67 63 60 <br /> 160 109 108 97 88 82 76 72 67 63 60 <br /> 170 105 104 94 86 80 75 71 67 63 60 <br /> 100 133 124 107 96 87 79 72 67 63 60 <br /> 105 129 121 106 95 87 79 72 67 63 60 <br /> 110 126 119 104 94 86 79 72 67 63 60 <br /> 120 119 114 101 92 84 79 72 67 63 60 <br /> Category 130 112 110 98 89 83 77 72 67 63 60 <br /> C 140 107 106 95 87 81 76 71 67 63 60 <br /> 150 101 101 92 85 79 74 70 67 63 60 <br /> 160 96 96 89 82 77 72 69 65 63 60 <br /> 170 91 91 86 80 75 71 67 64 62 59 <br /> 100 127 120 105 94 86 79 72 67 63 60 <br /> 105 123 117 103 93 85 79 72 67 63 60 <br /> 110 119 115 101 92 84 79 72 67 63 60 <br /> 120 112 110 98 89 82 77 72 67 63 60 <br /> Category 130 106 105 95 87 80 75 71 67 63 60 <br /> � 140 100 100 91 84 78 74 70 66 63 60 <br /> 150 95 95 88 82 76 72 68 65 62 60 <br /> 160 89 89 85 79 74 70 67 64 61 59 <br /> 170 84 84 82 77 72 69 65 63 60 58 <br /> Notes—see page 11 <br /> Starling Madison Lofquist,Inc. Consulting Structural and Forensic Engineers <br /> - 8 - <br />