VIPERSTUD® DRYWALL FRAMING SYSTEM - Section Properties VIPERSTUD® GROSS PROPERTIES MODEL GAUGE NO. VIPER25 25EQ VIPER20 20EQ VIPER 30mil 20DW VIPER 33mil 20STR MEMBER 162VS125-15 250VS125-15 4 362VS125-15 4 400VS125-15 5 600VS125-15 162VS125-18 250VS125-18 362VS125-18 400VS125-18 5 600VS125-18 162VS125-30 250VS125-30 362VS125-30 400VS125-30 600VS125-30 162VS125-33 250VS125-33 362VS125-33 400VS125-33 600VS125-33 DESIGN (in) 0.0155 0.0155 0.0155 0.0155 0.0155 0.0190 0.0190 0.0190 0.0190 0.0190 0.0312 0.0312 0.0312 0.0312 0.0312 0.0346 0.0346 0.0346 0.0346 0.0346 YIELD (ksi) 50 50 50 50 50 70 70 70 70 70 33 33 33 33 33 33 33 33 33 33 WEIGHT (lb/ft) 0.24 0.29 0.35 0.37 0.47 0.285 0.351 0.423 0.449 0.586 0.46 0.55 0.67 0.71 0.92 0.50 0.61 0.75 0.78 1.02 AREA (in2) 0.071 0.085 0.102 0.108 0.139 0.0839 0.103 0.124 0.132 0.172 0.135 0.161 0.197 0.209 0.271 0.147 0.178 0.220 0.230 0.301 Ix (in4) 0.032 0.084 0.199 0.250 0.659 0.0391 0.106 0.249 0.315 0.846 0.062 0.166 0.391 0.493 1.310 0.069 0.183 0.432 0.544 1.440 rx (in) 0.671 0.998 1.390 1.520 2.180 0.683 1.01 1.42 1.55 2.22 0.680 1.020 1.410 1.540 2.190 0.683 1.010 1.400 1.540 2.190 EFFECTIVE PROPERTIES Iy (in4) 0.015 0.017 0.019 0.020 0.022 0.0179 0.0227 0.0256 0.0266 0.0319 0.028 0.032 0.037 0.038 0.042 0.030 0.036 0.040 0.041 0.046 ry (in) 0.461 0.452 0.435 0.429 0.397 0.462 0.469 0.454 0.449 0.430 0.455 0.448 0.431 0.425 0.392 0.453 0.447 0.429 0.424 0.391 Ixd (in4) 0.032 0.090 0.205 0.255 0.628 0.0328 0.0942 0.213 0.265 0.647 0.062 0.163 0.385 0.486 1.230 0.068 0.181 0.428 0.539 1.390 Sx (in3) 0.024 0.042 0.058 0.061 0.085 0.0285 0.0581 0.0755 0.0847 0.151 0.067 0.120 0.172 0.191 0.341 0.077 0.137 0.201 0.224 0.400 MOMENTS Local Buckling Allowable Nominal Moment Moment Viper Ma (in-k) 0.66 1.17 1.60 1.69 2.36 1.19 2.09 3.08 3.44 5.41 1.32 2.31 3.39 3.78 5.95 1.53 2.65 3.96 4.42 6.93 Mnl (in-k) 1.42 2.72 3.48 3.99 5.90 1.99 4.07 5.28 5.93 10.6 2.21 3.96 5.67 6.31 11.30 2.55 4.53 6.62 7.38 13.20 Distortional Nominal Buckling Moment for Critical Nominal Conventional Unbraced Moment Studs Length Viper Mnd (in-k) 1.20 2.12 2.90 3.06 4.27 2.02 3.49 5.14 5.74 9.04 2.38 3.86 5.85 6.52 9.93 2.71 4.42 6.75 7.53 11.60 Mn (in-k) 1.02 (18 mil) 1.72 (18 mil) 2.47 (18 mil) 2.74 (18 mil) 4.13 (18 mil) 1.99 (30 mil) 3.49 (30 mil) 5.14 (30 mil) 5.74 (30 mil) 9.00 (30 mil) 1.99 (30 mil) 3.49 (30 mil) 5.14 (30 mil) 5.74 (30 mil) 9.00 (30 mil) 2.29 (33 mil) 4.02 (33 mil) 6.00 (33 mil) 6.70 (33 mil) 10.55 (33 mil) Lu (in) 25.1 24.8 24.5 24.4 23.7 21.2 21.9 21.5 21.5 21.5 30.8 30.1 29.7 29.6 28.7 30.8 30.1 29.7 29.5 28.6 Notes: 1. Nominal Moments for Viper25 are based on testing. Allowable moment (Ma) is calculated with safety factor of 1.81 in accordance with chapter F of AISI S100-12 specification. 2. Nominal moment for Viper20, Viper 30mil, Viper 33mil and conventional studs are based on calculations per AISI S100-12. 3. Section properties are in accordance with AISI S100-12. 4. Web depth-to-thickness ratio exceeds 200. 5. Web depth-to-thickness ratio exceeds 260. 6. ViperStud is considered fully braced when the unbraced length is less than listed Lu. 7. K assumed to be zero for distortional buckling moments. VIPERTRACK® PRODUCT NAME LEG SIZE WEIGHT (in) (lb/ft) VIPERTRACK 1.25" LEG 162VT125-15 1.25 250VT125-15 1.25 5 362VT125-15 1.25 5 400VT125-15 1.25 6 600VT125-15 1.25 162VT125-18 1.25 250VT125-18 1.25 362VT125-18 1.25 400VT125-18 1.25 600VT125-18 1.25 162VT125-30 1.25 250VT125-30 1.25 362VT125-30 1.25 400VT125-30 1.25 600VT125-30 1.25 162VT125-33 1.25 250VT125-33 1.25 362VT125-33 1.25 400VT125-33 1.25 600VT125-33 1.25 0.22 0.26 0.32 0.34 0.45 0.26 0.32 0.39 0.41 0.54 0.44 0.53 0.65 0.69 0.90 0.49 0.59 0.72 0.77 1.00 GROSS PROPERTIES TORSIONAL PROPERTIES EFFECTIVE PROPERTIES DESIGN (in) YIELD (ksi) AREA (in2) Ix (in4) Sx (in3) rx (in) Iy (in4) Sy (in3) ry (in) Ixd (in4) Sxe (in3) Ma (in-k) Xo (in) 0.0155 0.0155 0.0155 0.0155 0.0155 0.0190 0.0190 0.0190 0.0190 0.0190 0.0312 0.0312 0.0312 0.0312 0.0312 0.0346 0.0346 0.0346 0.0346 0.0346 50 50 50 50 50 50 50 50 50 50 33 33 33 33 33 33 33 33 33 33 0.064 0.078 0.095 0.101 0.132 0.077 0.093 0.115 0.122 0.160 0.129 0.156 0.192 0.203 0.266 0.143 0.174 0.212 0.225 0.295 0.035 0.086 0.197 0.247 0.642 0.033 0.091 0.218 0.275 0.740 0.071 0.175 0.399 0.499 1.300 0.079 0.195 0.443 0.554 1.440 0.040 0.066 0.105 0.120 0.210 0.042 0.073 0.121 0.139 0.248 0.080 0.132 0.211 0.240 0.421 0.088 0.146 0.234 0.266 0.467 0.736 1.050 1.440 1.560 2.210 0.660 0.986 1.377 1.503 2.152 0.741 1.060 1.440 1.570 2.210 0.742 1.060 1.440 1.570 2.210 0.011 0.012 0.014 0.014 0.015 0.013 0.014 0.016 0.016 0.017 0.022 0.025 0.027 0.028 0.031 0.024 0.027 0.030 0.031 0.034 0.0125 0.0133 0.0139 0.0141 0.0146 0.015 0.016 0.016 0.016 0.011 0.0249 0.0265 0.0277 0.0280 0.0290 0.0276 0.0293 0.0306 0.0309 0.0321 0.412 0.400 0.381 0.374 0.342 0.407 0.392 0.370 0.363 0.330 0.409 0.397 0.378 0.371 0.339 0.408 0.396 0.377 0.370 0.339 0.022 0.054 0.115 0.141 0.325 0.019 0.055 0.132 0.166 0.420 0.056 0.142 0.331 0.417 1.030 0.064 0.162 0.375 0.473 1.190 0.018 0.027 0.039 0.043 0.063 0.018 0.035 0.057 0.065 0.105 0.051 0.090 0.152 0.176 0.250 0.059 0.103 0.173 0.200 0.298 0.53 0.80 1.15 1.27 1.90 0.44 0.88 1.43 1.62 2.63 1.00 1.77 3.00 3.47 4.94 1.16 2.04 3.43 3.95 5.89 -0.877 -0.768 -0.665 -0.638 -0.523 -0.878 -0.747 -0.636 -0.606 -0.490 -0.868 -0.760 -0.658 -0.631 -0.517 -0.866 -0.758 -0.657 -0.629 -0.516 Notes: 1. See page 6 for ViperTrack notes. Jx103 (in4) Cw (in6) ro (in) c 0.0051 0.0062 0.0076 0.0081 0.0106 0.0092 0.0011 0.0138 0.0146 0.0192 0.0419 0.0508 0.0621 0.0659 0.0862 0.0571 0.0692 0.0848 0.0899 0.1180 0.006 0.015 0.035 0.043 0.109 0.006 0.016 0.038 0.048 0.122 0.012 0.030 0.069 0.086 0.216 0.013 0.033 0.077 0.096 0.239 1.22 1.36 1.63 1.73 2.29 1.17 1.30 1.56 1.66 2.23 1.21 1.36 1.63 1.73 2.29 1.21 1.36 1.63 1.73 2.29 0.480 0.683 0.833 0.864 0.948 0.438 0.668 0.834 0.867 0.952 0.488 0.689 0.837 0.867 0.949 0.489 0.690 0.838 0.868 0.949 MANY MORE SIZES ARE AVAILABLE - SEE WEB SITE FOR COMPLETE PRODUCT OFFERING. 866.372.6384 13