MultiPhysicsVault/.raw/AFirstCourseInTheFiniteElementMethod/AFirstCourseInTheFiniteElementMethod_079.md

<!-- source-page: 781 -->

Wide Flange Shapes (W Shapes)\*: Theoretical Dimensions and Properties for Designing (Continued ) 

<table><tr><td rowspan="2">Section Number</td><td rowspan="2">Weight per Foot (lb)</td><td rowspan="2">Area of Section A (in.2)</td><td rowspan="2">Depth of Section d (in.)</td><td colspan="2">Flange</td><td rowspan="2">Web Thickness  $t_w$  (in.)</td><td colspan="3">Axis X-X</td><td colspan="3">Axis Y-Y</td></tr><tr><td>Width  $b_f$  (in.)</td><td>Thick-ness  $t_f$  (in.)</td><td> $l_x$  (in.4)</td><td> $S_x$  (in.3)</td><td> $r_x$  (in.)</td><td> $l_y$  (in.4)</td><td> $S_y$  (in.3)</td><td> $r_y$  (in.)</td></tr><tr><td rowspan="3">W10 ×</td><td>45</td><td>13.3</td><td>10.10</td><td>8.020</td><td>0.620</td><td>0.350</td><td>248</td><td>49.1</td><td>4.33</td><td>53.4</td><td>13.3</td><td>2.01</td></tr><tr><td>39</td><td>11.5</td><td>9.92</td><td>7.985</td><td>0.530</td><td>0.315</td><td>209</td><td>42.1</td><td>4.27</td><td>45.0</td><td>11.3</td><td>1.98</td></tr><tr><td>33</td><td>9.71</td><td>9.73</td><td>7.960</td><td>0.435</td><td>0.290</td><td>170</td><td>35.0</td><td>4.19</td><td>36.6</td><td>9.20</td><td>1.94</td></tr><tr><td rowspan="3">W10 ×</td><td>30</td><td>8.84</td><td>10.47</td><td>5.810</td><td>0.510</td><td>0.300</td><td>170</td><td>32.4</td><td>4.38</td><td>16.7</td><td>5.75</td><td>1.37</td></tr><tr><td>26</td><td>7.61</td><td>10.33</td><td>5.770</td><td>0.440</td><td>0.260</td><td>144</td><td>27.9</td><td>4.35</td><td>14.1</td><td>4.89</td><td>1.36</td></tr><tr><td>22</td><td>6.49</td><td>10.17</td><td>5.750</td><td>0.360</td><td>0.240</td><td>118</td><td>23.2</td><td>4.27</td><td>11.4</td><td>3.97</td><td>1.33</td></tr><tr><td rowspan="4">W10 ×</td><td>19</td><td>5.62</td><td>10.24</td><td>4.020</td><td>0.395</td><td>0.250</td><td>96.3</td><td>18.8</td><td>4.14</td><td>4.29</td><td>2.14</td><td>0.874</td></tr><tr><td>17</td><td>4.99</td><td>10.11</td><td>4.010</td><td>0.330</td><td>0.240</td><td>81.9</td><td>16.2</td><td>4.05</td><td>3.56</td><td>1.78</td><td>0.845</td></tr><tr><td>15</td><td>4.41</td><td>7.99</td><td>4.000</td><td>0.270</td><td>0.230</td><td>68.9</td><td>13.8</td><td>3.95</td><td>2.89</td><td>1.45</td><td>0.810</td></tr><tr><td>12</td><td>3.54</td><td>9.87</td><td>3.960</td><td>0.210</td><td>0.190</td><td>53.8</td><td>10.9</td><td>3.90</td><td>2.18</td><td>1.10</td><td>0.785</td></tr><tr><td rowspan="6">W8 ×</td><td>67</td><td>19.7</td><td>9.00</td><td>8.280</td><td>0.935</td><td>0.570</td><td>272</td><td>60.4</td><td>3.72</td><td>88.6</td><td>21.4</td><td>2.12</td></tr><tr><td>58</td><td>17.1</td><td>8.75</td><td>8.220</td><td>0.810</td><td>0.510</td><td>228</td><td>52.0</td><td>3.65</td><td>75.1</td><td>18.3</td><td>2.10</td></tr><tr><td>48</td><td>14.1</td><td>8.50</td><td>8.110</td><td>0.685</td><td>0.400</td><td>184</td><td>43.3</td><td>3.61</td><td>60.9</td><td>15.0</td><td>2.08</td></tr><tr><td>40</td><td>11.7</td><td>8.25</td><td>8.070</td><td>0.560</td><td>0.360</td><td>146</td><td>35.5</td><td>3.53</td><td>49.1</td><td>12.2</td><td>2.04</td></tr><tr><td>35</td><td>10.3</td><td>8.12</td><td>8.020</td><td>0.495</td><td>0.310</td><td>127</td><td>31.2</td><td>3.51</td><td>42.6</td><td>10.6</td><td>2.03</td></tr><tr><td>31</td><td>9.13</td><td>8.00</td><td>7.995</td><td>0.435</td><td>0.285</td><td>110</td><td>27.5</td><td>3.47</td><td>37.1</td><td>9.27</td><td>2.02</td></tr><tr><td rowspan="2">W8 ×</td><td>28</td><td>8.25</td><td>8.06</td><td>6.535</td><td>0.465</td><td>0.285</td><td>98.0</td><td>24.3</td><td>3.45</td><td>21.7</td><td>6.63</td><td>1.62</td></tr><tr><td>24</td><td>7.08</td><td>7.93</td><td>6.495</td><td>0.400</td><td>0.245</td><td>82.8</td><td>20.9</td><td>3.42</td><td>18.3</td><td>5.63</td><td>1.61</td></tr><tr><td rowspan="2">W8 ×</td><td>21</td><td>6.16</td><td>8.28</td><td>5.270</td><td>0.400</td><td>0.250</td><td>75.3</td><td>18.2</td><td>3.49</td><td>9.77</td><td>3.71</td><td>1.26</td></tr><tr><td>18</td><td>5.26</td><td>8.14</td><td>5.250</td><td>0.330</td><td>0.230</td><td>61.9</td><td>15.2</td><td>3.43</td><td>7.97</td><td>3.04</td><td>1.23</td></tr><tr><td rowspan="3">W8 ×</td><td>15</td><td>4.44</td><td>8.11</td><td>4.015</td><td>0.315</td><td>0.245</td><td>48.0</td><td>11.8</td><td>3.29</td><td>3.41</td><td>1.70</td><td>0.876</td></tr><tr><td>13</td><td>3.84</td><td>7.99</td><td>4.000</td><td>0.255</td><td>0.230</td><td>39.6</td><td>9.91</td><td>3.21</td><td>2.73</td><td>1.37</td><td>0.843</td></tr><tr><td>10</td><td>2.96</td><td>7.89</td><td>3.940</td><td>0.205</td><td>0.170</td><td>30.8</td><td>7.81</td><td>3.22</td><td>2.09</td><td>1.06</td><td>0.841</td></tr><tr><td rowspan="3">W6 ×</td><td>25</td><td>7.34</td><td>6.38</td><td>6.080</td><td>0.455</td><td>0.320</td><td>53.4</td><td>16.7</td><td>2.70</td><td>17.1</td><td>5.61</td><td>1.52</td></tr><tr><td>20</td><td>5.87</td><td>6.20</td><td>6.020</td><td>0.365</td><td>0.260</td><td>41.4</td><td>13.4</td><td>2.66</td><td>13.3</td><td>4.41</td><td>1.50</td></tr><tr><td>15</td><td>4.43</td><td>5.99</td><td>5.990</td><td>0.260</td><td>0.230</td><td>29.1</td><td>9.72</td><td>2.56</td><td>9.32</td><td>3.11</td><td>1.45</td></tr><tr><td rowspan="3">W6 ×</td><td>16</td><td>4.74</td><td>6.28</td><td>4.030</td><td>0.405</td><td>0.260</td><td>32.1</td><td>10.2</td><td>2.60</td><td>4.43</td><td>2.20</td><td>0.967</td></tr><tr><td>12</td><td>3.55</td><td>6.03</td><td>4.000</td><td>0.280</td><td>0.230</td><td>22.1</td><td>7.31</td><td>2.49</td><td>2.99</td><td>1.50</td><td>0.918</td></tr><tr><td>9</td><td>2.68</td><td>5.90</td><td>3.940</td><td>0.215</td><td>0.170</td><td>16.4</td><td>5.56</td><td>2.47</td><td>2.20</td><td>1.11</td><td>0.905</td></tr><tr><td rowspan="2">W5 ×</td><td>19</td><td>5.54</td><td>5.15</td><td>5.030</td><td>0.430</td><td>0.270</td><td>26.2</td><td>10.2</td><td>2.17</td><td>9.13</td><td>3.63</td><td>1.28</td></tr><tr><td>16</td><td>4.68</td><td>5.01</td><td>5.000</td><td>0.360</td><td>0.240</td><td>21.3</td><td>8.51</td><td>2.13</td><td>7.51</td><td>3.00</td><td>1.27</td></tr><tr><td>W4 ×</td><td>13</td><td>3.83</td><td>4.16</td><td>4.060</td><td>0.345</td><td>0.280</td><td>11.3</td><td>5.46</td><td>1.72</td><td>3.86</td><td>1.90</td><td>1.00</td></tr></table>

<!-- source-page: 782 -->

Pipe: Dimensions and Properties\*   
![](images/page-782_1914dcf0c5d61aa6828733359e2060e2cdae8695723496a983730bd8ca556eb3.jpg)

<table><tr><td colspan="4">Dimensions</td><td rowspan="2">Weight per Ft. Lbs. Plain Ends</td><td colspan="4">Properties</td><td rowspan="2">Schedule No.</td></tr><tr><td>Nominal Diameter in.</td><td>Outside Diameter in.</td><td>Inside Diameter in.</td><td>Wall Thickness in.</td><td> $A$  in. $^2$ </td><td> $I$  in. $^4$ </td><td> $S$  in. $^3$ </td><td> $r$  in.</td></tr><tr><td colspan="10">Standard Weight</td></tr><tr><td> $1/2$ </td><td>.840</td><td>.622</td><td>.109</td><td>.85</td><td>.250</td><td>.017</td><td>.041</td><td>.261</td><td>40</td></tr><tr><td> $3/4$ </td><td>1.050</td><td>.824</td><td>.113</td><td>1.13</td><td>.333</td><td>.037</td><td>.071</td><td>.334</td><td>40</td></tr><tr><td>1</td><td>1.315</td><td>1.049</td><td>.133</td><td>1.68</td><td>.494</td><td>.087</td><td>.133</td><td>.421</td><td>40</td></tr><tr><td> $11/4$ </td><td>1.660</td><td>1.380</td><td>.140</td><td>2.27</td><td>.669</td><td>.195</td><td>.235</td><td>.540</td><td>40</td></tr><tr><td> $11/2$ </td><td>1.900</td><td>1.610</td><td>.145</td><td>2.72</td><td>.799</td><td>.310</td><td>.326</td><td>.623</td><td>40</td></tr><tr><td>2</td><td>2.375</td><td>2.067</td><td>.154</td><td>3.65</td><td>1.07</td><td>.666</td><td>.561</td><td>.787</td><td>40</td></tr><tr><td> $21/2$ </td><td>2.875</td><td>2.469</td><td>.203</td><td>5.79</td><td>1.70</td><td>1.53</td><td>1.06</td><td>.947</td><td>40</td></tr><tr><td>3</td><td>3.500</td><td>3.068</td><td>.216</td><td>7.58</td><td>2.23</td><td>3.02</td><td>1.72</td><td>1.16</td><td>40</td></tr><tr><td> $31/2$ </td><td>4.000</td><td>3.548</td><td>.226</td><td>9.11</td><td>2.68</td><td>4.79</td><td>2.39</td><td>1.34</td><td>40</td></tr><tr><td>4</td><td>4.500</td><td>4.026</td><td>.237</td><td>10.79</td><td>3.17</td><td>7.23</td><td>3.21</td><td>1.51</td><td>40</td></tr><tr><td>5</td><td>5.563</td><td>5.047</td><td>.258</td><td>14.62</td><td>4.30</td><td>15.2</td><td>5.45</td><td>1.88</td><td>40</td></tr><tr><td>6</td><td>6.625</td><td>6.065</td><td>.280</td><td>18.97</td><td>5.58</td><td>28.1</td><td>8.50</td><td>2.25</td><td>40</td></tr><tr><td>8</td><td>8.625</td><td>7.981</td><td>.322</td><td>28.55</td><td>8.40</td><td>72.5</td><td>16.8</td><td>2.94</td><td>40</td></tr><tr><td>10</td><td>10.750</td><td>10.020</td><td>.365</td><td>40.48</td><td>11.9</td><td>161</td><td>29.9</td><td>3.67</td><td>40</td></tr><tr><td>12</td><td>12.750</td><td>12.000</td><td>.375</td><td>49.56</td><td>14.6</td><td>279</td><td>43.8</td><td>4.38</td><td></td></tr><tr><td colspan="10">Extra Strong</td></tr><tr><td> $1/2$ </td><td>.840</td><td>.546</td><td>.147</td><td>1.09</td><td>.320</td><td>.020</td><td>.048</td><td>.250</td><td>80</td></tr><tr><td> $3/4$ </td><td>1.050</td><td>.742</td><td>.154</td><td>1.47</td><td>.433</td><td>.045</td><td>.085</td><td>.321</td><td>80</td></tr><tr><td>1</td><td>1.315</td><td>.957</td><td>.179</td><td>2.17</td><td>.639</td><td>.106</td><td>.161</td><td>.407</td><td>80</td></tr><tr><td> $11/4$ </td><td>1.660</td><td>1.278</td><td>.191</td><td>3.00</td><td>.881</td><td>.242</td><td>.291</td><td>.524</td><td>80</td></tr><tr><td> $11/2$ </td><td>1.900</td><td>1.500</td><td>.200</td><td>3.63</td><td>1.07</td><td>.391</td><td>.412</td><td>.605</td><td>80</td></tr><tr><td>2</td><td>2.375</td><td>1.939</td><td>.218</td><td>5.02</td><td>1.48</td><td>.868</td><td>.731</td><td>.766</td><td>80</td></tr><tr><td> $21/2$ </td><td>2.875</td><td>2.323</td><td>.276</td><td>7.66</td><td>2.25</td><td>1.92</td><td>1.34</td><td>.924</td><td>80</td></tr><tr><td>3</td><td>3.500</td><td>2.900</td><td>.300</td><td>10.25</td><td>3.02</td><td>3.89</td><td>2.23</td><td>1.14</td><td>80</td></tr><tr><td> $31/2$ </td><td>4.000</td><td>3.364</td><td>.318</td><td>12.50</td><td>3.68</td><td>6.28</td><td>3.14</td><td>1.31</td><td>80</td></tr><tr><td>4</td><td>4.500</td><td>3.826</td><td>.337</td><td>14.98</td><td>4.41</td><td>9.61</td><td>4.27</td><td>1.48</td><td>80</td></tr><tr><td>5</td><td>5.563</td><td>4.813</td><td>.375</td><td>20.78</td><td>6.11</td><td>20.7</td><td>7.43</td><td>1.84</td><td>80</td></tr><tr><td>6</td><td>6.625</td><td>5.761</td><td>.432</td><td>28.57</td><td>8.40</td><td>40.5</td><td>12.2</td><td>2.19</td><td>80</td></tr><tr><td>8</td><td>8.625</td><td>7.625</td><td>.500</td><td>43.39</td><td>12.8</td><td>106</td><td>24.5</td><td>2.88</td><td>80</td></tr><tr><td>10</td><td>10.750</td><td>9.750</td><td>.500</td><td>54.74</td><td>16.1</td><td>212</td><td>39.4</td><td>3.63</td><td>80</td></tr><tr><td>12</td><td>12.750</td><td>11.750</td><td>.500</td><td>65.42</td><td>19.2</td><td>362</td><td>56.7</td><td>4.33</td><td></td></tr><tr><td colspan="10">Double-Extra Strong</td></tr><tr><td>2</td><td>2.375</td><td>1.503</td><td>.436</td><td>9.03</td><td>2.66</td><td>1.31</td><td>1.10</td><td>.703</td><td></td></tr><tr><td> $21/2$ </td><td>2.875</td><td>1.771</td><td>.552</td><td>13.69</td><td>4.03</td><td>2.87</td><td>2.00</td><td>.844</td><td></td></tr><tr><td>3</td><td>3.500</td><td>2.300</td><td>.600</td><td>18.58</td><td>5.47</td><td>5.99</td><td>3.42</td><td>1.05</td><td></td></tr><tr><td>4</td><td>4.500</td><td>3.152</td><td>.674</td><td>27.54</td><td>8.10</td><td>15.3</td><td>6.79</td><td>1.37</td><td></td></tr><tr><td>5</td><td>5.563</td><td>4.063</td><td>.750</td><td>38.55</td><td>11.3</td><td>33.6</td><td>12.1</td><td>1.72</td><td></td></tr><tr><td>6</td><td>6.625</td><td>4.897</td><td>.864</td><td>53.16</td><td>15.6</td><td>66.3</td><td>20.0</td><td>2.06</td><td></td></tr><tr><td>8</td><td>8.625</td><td>6.875</td><td>.875</td><td>72.42</td><td>21.3</td><td>162</td><td>37.6</td><td>2.76</td><td></td></tr></table>

\*The listed sections are available in conformance with ASTM Specification A 53 Grade B or A501. Other sections are made to these specifications. Consult with pipe manufacturers or distributors for availability. Printed with permission AISC.

<!-- source-page: 783 -->

![](images/page-783_2e337948d70945e87034abddedcafc9c396678e23cfac860e8ff5b021e611e27.jpg)

<details>
<summary>natural_image</summary>

Simple geometric diagram of a square with perpendicular and horizontal center lines (no text or symbols)
</details>

Structural Tubing--Square: Dimensions and Properties 

<table><tr><td colspan="4">Dimensions</td><td colspan="6">Properties**</td></tr><tr><td>Nominal* Size</td><td colspan="2">Wall Thickness</td><td>Weight per Ft</td><td>Area</td><td>I</td><td>S</td><td>r</td><td>J</td><td>Z</td></tr><tr><td>In.</td><td colspan="2">In.</td><td>Lb.</td><td> $In.^2$ </td><td> $In.^4$ </td><td> $In.^3$ </td><td>In.</td><td> $In.^4$ </td><td> $In.^3$ </td></tr><tr><td rowspan="4">16 × 16</td><td>0.6250</td><td> $\frac{5}{8}$ </td><td>127.37</td><td>37.4</td><td>1450</td><td>182</td><td>6.23</td><td>2320</td><td>214</td></tr><tr><td>0.5000</td><td> $\frac{1}{2}$ </td><td>103.30</td><td>30.4</td><td>1200</td><td>150</td><td>6.29</td><td>1890</td><td>175</td></tr><tr><td>0.3750</td><td> $\frac{3}{8}$ </td><td>78.52</td><td>23.1</td><td>931</td><td>116</td><td>6.35</td><td>1450</td><td>134</td></tr><tr><td>0.3125</td><td> $\frac{5}{16}$ </td><td>65.87</td><td>19.4</td><td>789</td><td>98.6</td><td>6.38</td><td>1220</td><td>113</td></tr><tr><td rowspan="4">14 × 14</td><td>0.6250</td><td> $\frac{5}{8}$ </td><td>110.36</td><td>32.4</td><td>952</td><td>136</td><td>5.42</td><td>1530</td><td>161</td></tr><tr><td>0.5000</td><td> $\frac{1}{2}$ </td><td>89.68</td><td>26.4</td><td>791</td><td>113</td><td>5.48</td><td>1250</td><td>132</td></tr><tr><td>0.3750</td><td> $\frac{3}{8}$ </td><td>68.31</td><td>20.1</td><td>615</td><td>87.9</td><td>5.54</td><td>963</td><td>102</td></tr><tr><td>0.3125</td><td> $\frac{5}{16}$ </td><td>57.36</td><td>16.9</td><td>522</td><td>74.6</td><td>5.57</td><td>812</td><td>86.1</td></tr><tr><td rowspan="6">12 × 12</td><td>0.6250</td><td> $\frac{5}{8}$ </td><td>93.34</td><td>27.4</td><td>580</td><td>96.7</td><td>4.60</td><td>943</td><td>116</td></tr><tr><td>0.5000</td><td> $\frac{1}{2}$ </td><td>76.07</td><td>22.4</td><td>485</td><td>80.9</td><td>4.66</td><td>777</td><td>95.4</td></tr><tr><td>0.3750</td><td> $\frac{3}{8}$ </td><td>58.10</td><td>17.1</td><td>380</td><td>63.4</td><td>4.72</td><td>599</td><td>73.9</td></tr><tr><td>0.3125</td><td> $\frac{5}{16}$ </td><td>48.86</td><td>14.4</td><td>324</td><td>54.0</td><td>4.75</td><td>506</td><td>62.6</td></tr><tr><td>0.2500</td><td> $\frac{1}{4}$ </td><td>39.43</td><td>11.6</td><td>265</td><td>44.1</td><td>4.78</td><td>410</td><td>50.8</td></tr><tr><td>0.1875</td><td> $\frac{3}{16}$ </td><td>29.84</td><td>8.77</td><td>203</td><td>33.8</td><td>4.81</td><td>312</td><td>38.7</td></tr><tr><td rowspan="7">10 × 10</td><td>0.6250</td><td> $\frac{5}{8}$ </td><td>76.33</td><td>22.4</td><td>321</td><td>64.2</td><td>3.78</td><td>529</td><td>77.6</td></tr><tr><td>0.5625</td><td> $\frac{9}{16}$ </td><td>69.48</td><td>20.4</td><td>297</td><td>59.4</td><td>3.81</td><td>485</td><td>71.3</td></tr><tr><td>0.5000</td><td> $\frac{1}{2}$ </td><td>62.46</td><td>18.4</td><td>271</td><td>54.2</td><td>3.84</td><td>439</td><td>64.6</td></tr><tr><td>0.3750</td><td> $\frac{3}{8}$ </td><td>47.90</td><td>14.1</td><td>214</td><td>42.9</td><td>3.90</td><td>341</td><td>50.4</td></tr><tr><td>0.3125</td><td> $\frac{5}{16}$ </td><td>40.35</td><td>11.9</td><td>183</td><td>36.7</td><td>3.93</td><td>289</td><td>42.8</td></tr><tr><td>0.2500</td><td> $\frac{1}{4}$ </td><td>32.63</td><td>9.59</td><td>151</td><td>30.1</td><td>3.96</td><td>235</td><td>34.9</td></tr><tr><td>0.1875</td><td> $\frac{3}{16}$ </td><td>24.73</td><td>7.27</td><td>116</td><td>23.2</td><td>3.99</td><td>179</td><td>26.6</td></tr><tr><td rowspan="7">9 × 9</td><td>0.6250</td><td> $\frac{5}{8}$ </td><td>67.82</td><td>19.9</td><td>227</td><td>50.4</td><td>3.37</td><td>377</td><td>61.5</td></tr><tr><td>0.5625</td><td> $\frac{9}{16}$ </td><td>61.83</td><td>18.2</td><td>211</td><td>46.8</td><td>3.40</td><td>347</td><td>56.6</td></tr><tr><td>0.5000</td><td> $\frac{1}{2}$ </td><td>55.66</td><td>16.4</td><td>193</td><td>42.9</td><td>3.43</td><td>315</td><td>51.4</td></tr><tr><td>0.3750</td><td> $\frac{3}{8}$ </td><td>42.79</td><td>12.6</td><td>154</td><td>34.1</td><td>3.49</td><td>246</td><td>40.3</td></tr><tr><td>0.3125</td><td> $\frac{5}{16}$ </td><td>36.10</td><td>10.6</td><td>132</td><td>29.3</td><td>3.53</td><td>209</td><td>34.3</td></tr><tr><td>0.2500</td><td> $\frac{1}{4}$ </td><td>29.23</td><td>8.59</td><td>109</td><td>24.1</td><td>3.56</td><td>170</td><td>28.0</td></tr><tr><td>0.1875</td><td> $\frac{3}{16}$ </td><td>22.18</td><td>6.52</td><td>83.8</td><td>18.6</td><td>3.59</td><td>130</td><td>21.4</td></tr><tr><td rowspan="7">8 × 8</td><td>0.6250</td><td> $\frac{5}{8}$ </td><td>59.32</td><td>17.4</td><td>153</td><td>38.3</td><td>2.96</td><td>258</td><td>47.2</td></tr><tr><td>0.5625</td><td> $\frac{9}{16}$ </td><td>54.17</td><td>15.9</td><td>143</td><td>35.7</td><td>3.00</td><td>238</td><td>43.6</td></tr><tr><td>0.5000</td><td> $\frac{1}{2}$ </td><td>48.85</td><td>14.4</td><td>131</td><td>32.9</td><td>3.03</td><td>217</td><td>39.7</td></tr><tr><td>0.3750</td><td> $\frac{3}{8}$ </td><td>37.69</td><td>11.1</td><td>106</td><td>26.4</td><td>3.09</td><td>170</td><td>31.3</td></tr><tr><td>0.3125</td><td> $\frac{5}{16}$ </td><td>31.84</td><td>9.36</td><td>90.9</td><td>22.7</td><td>3.12</td><td>145</td><td>26.7</td></tr><tr><td>0.2500</td><td> $\frac{1}{4}$ </td><td>25.82</td><td>7.59</td><td>75.1</td><td>18.8</td><td>3.15</td><td>118</td><td>21.9</td></tr><tr><td>0.1875</td><td> $\frac{3}{16}$ </td><td>19.63</td><td>5.77</td><td>58.2</td><td>14.6</td><td>3.18</td><td>90.6</td><td>16.8</td></tr><tr><td rowspan="6">7 × 7</td><td>0.5625</td><td> $\frac{9}{16}$ </td><td>46.51</td><td>13.7</td><td>91.4</td><td>26.1</td><td>2.59</td><td>154</td><td>32.3</td></tr><tr><td>0.5000</td><td> $\frac{1}{2}$ </td><td>42.05</td><td>12.4</td><td>84.6</td><td>24.2</td><td>2.62</td><td>141</td><td>29.6</td></tr><tr><td>0.3750</td><td> $\frac{3}{8}$ </td><td>32.58</td><td>9.58</td><td>68.7</td><td>19.6</td><td>2.68</td><td>112</td><td>23.5</td></tr><tr><td>0.3125</td><td> $\frac{5}{16}$ </td><td>27.59</td><td>8.11</td><td>59.5</td><td>17.0</td><td>2.71</td><td>95.6</td><td>20.1</td></tr><tr><td>0.2500</td><td> $\frac{1}{4}$ </td><td>22.42</td><td>6.59</td><td>49.4</td><td>14.1</td><td>2.74</td><td>78.3</td><td>16.5</td></tr><tr><td>0.1875</td><td> $\frac{3}{16}$ </td><td>17.08</td><td>5.02</td><td>38.5</td><td>11.0</td><td>2.77</td><td>60.2</td><td>12.7</td></tr></table>

\*Outside dimensions across flat sides.   
\*\*Properties are based upon a nominal outside corner radius equal to two times the wall thickness.

<!-- source-page: 784 -->

Structural Tubing--Square: Dimensions and Properties (Continued ) 

<table><tr><td colspan="4">Dimensions</td><td colspan="6">Properties**</td></tr><tr><td>Nominal* Size</td><td colspan="2">Wall Thickness</td><td>Weight per Ft</td><td>Area</td><td> $I$ </td><td> $S$ </td><td> $r$ </td><td> $J$ </td><td> $Z$ </td></tr><tr><td>In.</td><td colspan="2">In.</td><td>Lb.</td><td> $In.^2$ </td><td> $In.^4$ </td><td> $In.^3$ </td><td>In.</td><td> $In.^4$ </td><td> $In.^3$ </td></tr><tr><td rowspan="6">6 × 6</td><td>0.5625</td><td> $\frac{9}{16}$ </td><td>38.86</td><td>11.4</td><td>54.1</td><td>18.0</td><td>2.18</td><td>92.9</td><td>22.7</td></tr><tr><td>0.5000</td><td> $\frac{1}{2}$ </td><td>35.24</td><td>10.4</td><td>50.5</td><td>16.8</td><td>2.21</td><td>85.6</td><td>20.9</td></tr><tr><td>0.3750</td><td> $\frac{3}{8}$ </td><td>27.48</td><td>8.08</td><td>41.6</td><td>13.9</td><td>2.27</td><td>68.5</td><td>16.8</td></tr><tr><td>0.3125</td><td> $\frac{5}{16}$ </td><td>23.34</td><td>6.86</td><td>36.3</td><td>12.1</td><td>2.30</td><td>58.9</td><td>14.4</td></tr><tr><td>0.2500</td><td> $\frac{1}{4}$ </td><td>19.02</td><td>5.59</td><td>30.3</td><td>10.1</td><td>2.33</td><td>48.5</td><td>11.9</td></tr><tr><td>0.1875</td><td> $\frac{3}{16}$ </td><td>14.53</td><td>4.27</td><td>23.8</td><td>7.93</td><td>2.36</td><td>37.5</td><td>9.24</td></tr><tr><td rowspan="5">5 × 5</td><td>0.5000</td><td> $\frac{1}{2}$ </td><td>28.43</td><td>8.36</td><td>27.0</td><td>10.8</td><td>1.80</td><td>46.8</td><td>13.7</td></tr><tr><td>0.3750</td><td> $\frac{3}{8}$ </td><td>22.37</td><td>6.58</td><td>22.8</td><td>9.11</td><td>1.86</td><td>38.2</td><td>11.2</td></tr><tr><td>0.3125</td><td> $\frac{5}{16}$ </td><td>19.08</td><td>5.61</td><td>20.1</td><td>8.02</td><td>1.89</td><td>33.1</td><td>9.70</td></tr><tr><td>0.2500</td><td> $\frac{1}{4}$ </td><td>15.62</td><td>4.59</td><td>16.9</td><td>6.78</td><td>1.92</td><td>27.4</td><td>8.07</td></tr><tr><td>0.1875</td><td> $\frac{3}{16}$ </td><td>11.97</td><td>3.52</td><td>13.4</td><td>5.36</td><td>1.95</td><td>21.3</td><td>6.29</td></tr><tr><td rowspan="2">4.5 × 4.5</td><td>0.2500</td><td> $\frac{1}{4}$ </td><td>13.91</td><td>4.09</td><td>12.1</td><td>5.36</td><td>1.72</td><td>19.7</td><td>6.43</td></tr><tr><td>0.1875</td><td> $\frac{3}{16}$ </td><td>10.70</td><td>3.14</td><td>9.60</td><td>4.27</td><td>1.75</td><td>15.4</td><td>5.03</td></tr><tr><td rowspan="5">4 × 4</td><td>0.5000</td><td> $\frac{1}{2}$ </td><td>21.63</td><td>6.36</td><td>12.3</td><td>6.13</td><td>1.39</td><td>21.8</td><td>8.02</td></tr><tr><td>0.3750</td><td> $\frac{3}{8}$ </td><td>17.27</td><td>5.08</td><td>10.7</td><td>5.35</td><td>1.45</td><td>18.4</td><td>6.72</td></tr><tr><td>0.3125</td><td> $\frac{5}{16}$ </td><td>14.83</td><td>4.36</td><td>9.58</td><td>4.79</td><td>1.48</td><td>16.1</td><td>5.90</td></tr><tr><td>0.2500</td><td> $\frac{1}{4}$ </td><td>12.21</td><td>3.59</td><td>8.22</td><td>4.11</td><td>1.51</td><td>13.5</td><td>4.97</td></tr><tr><td>0.1875</td><td> $\frac{3}{16}$ </td><td>9.42</td><td>2.77</td><td>6.59</td><td>3.30</td><td>1.54</td><td>10.6</td><td>3.91</td></tr><tr><td rowspan="3">3.5 × 3.5</td><td>0.3125</td><td> $\frac{5}{16}$ </td><td>12.70</td><td>3.73</td><td>6.09</td><td>3.48</td><td>1.28</td><td>10.4</td><td>4.35</td></tr><tr><td>0.2500</td><td> $\frac{1}{4}$ </td><td>10.51</td><td>3.09</td><td>5.29</td><td>3.02</td><td>1.31</td><td>8.82</td><td>3.70</td></tr><tr><td>0.1875</td><td> $\frac{3}{16}$ </td><td>8.15</td><td>2.39</td><td>4.29</td><td>2.45</td><td>1.34</td><td>6.99</td><td>2.93</td></tr><tr><td rowspan="3">3 × 3</td><td>0.3125</td><td> $\frac{5}{16}$ </td><td>10.58</td><td>3.11</td><td>3.58</td><td>2.39</td><td>1.07</td><td>6.22</td><td>3.04</td></tr><tr><td>0.2500</td><td> $\frac{1}{4}$ </td><td>8.81</td><td>2.59</td><td>3.16</td><td>2.10</td><td>1.10</td><td>5.35</td><td>2.61</td></tr><tr><td>0.1875</td><td> $\frac{3}{16}$ </td><td>6.87</td><td>2.02</td><td>2.60</td><td>1.73</td><td>1.13</td><td>4.28</td><td>2.10</td></tr><tr><td rowspan="3">2.5 × 2.5</td><td>0.3125</td><td> $\frac{5}{16}$ </td><td>10.58</td><td>3.11</td><td>3.58</td><td>2.39</td><td>1.07</td><td>3.32</td><td>1.96</td></tr><tr><td>0.2500</td><td> $\frac{1}{4}$ </td><td>7.11</td><td>2.09</td><td>1.69</td><td>1.35</td><td>0.899</td><td>2.92</td><td>1.71</td></tr><tr><td>0.1875</td><td> $\frac{3}{16}$ </td><td>5.59</td><td>1.64</td><td>1.42</td><td>1.14</td><td>0.930</td><td>2.38</td><td>1.40</td></tr><tr><td rowspan="3">2 × 2</td><td>0.3125</td><td> $\frac{5}{16}$ </td><td>6.32</td><td>1.86</td><td>0.880</td><td>0.880</td><td>0.690</td><td>1.49</td><td>1.11</td></tr><tr><td>0.2500</td><td> $\frac{1}{4}$ </td><td>5.41</td><td>1.59</td><td>0.766</td><td>0.766</td><td>0.694</td><td>1.36</td><td>1.00</td></tr><tr><td>0.1875</td><td> $\frac{3}{16}$ </td><td>4.32</td><td>1.27</td><td>0.668</td><td>0.668</td><td>0.726</td><td>1.15</td><td>0.840</td></tr></table>

<!-- source-page: 785 -->

![](images/page-785_f395efadadef368299e450151dbb15d279e0d93290e3e1d6a79cc67806737827.jpg)

<details>
<summary>text_image</summary>

Y
X X
Y
</details>

Structural Tubing--Rectangular: Dimensions and Properties 

<table><tr><td colspan="4">Dimensions</td><td colspan="10">Properties**</td></tr><tr><td rowspan="2">Nominal* Size</td><td rowspan="2">Wall Thickness</td><td rowspan="2"></td><td rowspan="2">Weight per Ft.</td><td colspan="5">X-X Axis</td><td colspan="4">Y-Y Axis</td><td rowspan="2">J</td></tr><tr><td>Area</td><td> $I_x$ </td><td> $S_x$ </td><td> $Z_x$ </td><td> $r_x$ </td><td> $I_y$ </td><td> $S_y$ </td><td> $Z_y$ </td><td> $r_y$ </td></tr><tr><td>In.</td><td>In.</td><td></td><td>Lb.</td><td>In. $^2$ </td><td>In. $^4$ </td><td>In. $^3$ </td><td>In. $^3$ </td><td>In.</td><td>In. $^4$ </td><td>In. $^3$ </td><td>In. $^3$ </td><td>In.</td><td>In. $^4$ </td></tr><tr><td rowspan="4">20 × 12</td><td>0.6250</td><td> $\frac{5}{8}$ </td><td>127.37</td><td>37.4</td><td>2000</td><td>200</td><td>245</td><td>7.30</td><td>904</td><td>151</td><td>172</td><td>4.91</td><td>2010</td></tr><tr><td>0.5000</td><td> $\frac{1}{2}$ </td><td>103.30</td><td>30.4</td><td>1650</td><td>165</td><td>201</td><td>7.37</td><td>750</td><td>125</td><td>141</td><td>4.97</td><td>1650</td></tr><tr><td>0.3750</td><td> $\frac{3}{6}$ </td><td>78.52</td><td>23.1</td><td>1280</td><td>128</td><td>154</td><td>7.45</td><td>583</td><td>97.2</td><td>109</td><td>5.03</td><td>1270</td></tr><tr><td>0.3125</td><td> $\frac{5}{16}$ </td><td>65.87</td><td>19.4</td><td>1080</td><td>108</td><td>130</td><td>7.47</td><td>495</td><td>82.5</td><td>91.8</td><td>5.06</td><td>1070</td></tr><tr><td rowspan="3">20 × 8</td><td>0.5000</td><td> $\frac{1}{2}$ </td><td>89.68</td><td>26.4</td><td>1270</td><td>127</td><td>162</td><td>6.94</td><td>300</td><td>75.1</td><td>84.7</td><td>3.38</td><td>806</td></tr><tr><td>0.3750</td><td> $\frac{3}{8}$ </td><td>68.31</td><td>20.1</td><td>988</td><td>98.8</td><td>125</td><td>7.02</td><td>236</td><td>59.1</td><td>65.6</td><td>3.43</td><td>625</td></tr><tr><td>0.3125</td><td> $\frac{5}{16}$ </td><td>57.36</td><td>16.9</td><td>838</td><td>83.8</td><td>105</td><td>7.05</td><td>202</td><td>50.4</td><td>55.6</td><td>3.46</td><td>529</td></tr><tr><td rowspan="3">20 × 4</td><td>0.5000</td><td> $\frac{1}{2}$ </td><td>76.07</td><td>22.4</td><td>889</td><td>88.9</td><td>123</td><td>6.31</td><td>61.6</td><td>30.8</td><td>36.0</td><td>1.66</td><td>205</td></tr><tr><td>0.3750</td><td> $\frac{3}{8}$ </td><td>58.10</td><td>17.1</td><td>699</td><td>69.9</td><td>95.3</td><td>6.40</td><td>50.3</td><td>25.1</td><td>28.5</td><td>1.72</td><td>165</td></tr><tr><td>0.3125</td><td> $\frac{5}{16}$ </td><td>48.86</td><td>14.4</td><td>596</td><td>59.6</td><td>80.8</td><td>6.44</td><td>43.7</td><td>21.8</td><td>24.3</td><td>1.74</td><td>143</td></tr><tr><td rowspan="3">18 × 6</td><td>0.5000</td><td> $\frac{1}{2}$ </td><td>76.07</td><td>22.4</td><td>818</td><td>90.9</td><td>119</td><td>6.05</td><td>141</td><td>47.2</td><td>53.9</td><td>2.52</td><td>410</td></tr><tr><td>0.3750</td><td> $\frac{3}{8}$ </td><td>58.10</td><td>17.1</td><td>641</td><td>71.3</td><td>92.2</td><td>6.13</td><td>113</td><td>37.6</td><td>42.1</td><td>2.57</td><td>322</td></tr><tr><td>0.3125</td><td> $\frac{5}{16}$ </td><td>48.86</td><td>14.4</td><td>546</td><td>60.7</td><td>78.1</td><td>6.17</td><td>97.0</td><td>32.3</td><td>35.8</td><td>2.60</td><td>274</td></tr><tr><td rowspan="4">16 × 12</td><td>0.6250</td><td> $\frac{5}{8}$ </td><td>110.36</td><td>32.4</td><td>1160</td><td>145</td><td>175</td><td>5.98</td><td>742</td><td>124</td><td>144</td><td>4.78</td><td>1460</td></tr><tr><td>0.5000</td><td> $\frac{1}{2}$ </td><td>89.68</td><td>26.4</td><td>962</td><td>120</td><td>144</td><td>6.04</td><td>618</td><td>103</td><td>118</td><td>4.84</td><td>1200</td></tr><tr><td>0.3750</td><td> $\frac{3}{8}$ </td><td>68.31</td><td>20.1</td><td>748</td><td>93.5</td><td>111</td><td>6.11</td><td>482</td><td>80.3</td><td>91.3</td><td>4.90</td><td>922</td></tr><tr><td>0.3125</td><td> $\frac{5}{16}$ </td><td>57.36</td><td>16.9</td><td>635</td><td>79.4</td><td>93.8</td><td>6.14</td><td>409</td><td>68.2</td><td>77.2</td><td>4.93</td><td>777</td></tr><tr><td rowspan="3">16 × 8</td><td>0.5000</td><td> $\frac{1}{2}$ </td><td>76.07</td><td>22.4</td><td>722</td><td>90.2</td><td>113</td><td>5.68</td><td>244</td><td>61.0</td><td>69.7</td><td>3.30</td><td>599</td></tr><tr><td>0.3750</td><td> $\frac{3}{8}$ </td><td>58.10</td><td>17.1</td><td>565</td><td>70.6</td><td>87.6</td><td>5.75</td><td>193</td><td>48.2</td><td>54.2</td><td>3.36</td><td>465</td></tr><tr><td>0.3125</td><td> $\frac{5}{16}$ </td><td>48.86</td><td>14.4</td><td>481</td><td>60.1</td><td>74.2</td><td>5.79</td><td>165</td><td>41.2</td><td>45.9</td><td>3.39</td><td>394</td></tr><tr><td rowspan="3">16 × 4</td><td>0.5000</td><td> $\frac{1}{2}$ </td><td>62.46</td><td>18.4</td><td>481</td><td>60.2</td><td>82.2</td><td>5.12</td><td>49.3</td><td>24.6</td><td>29.0</td><td>1.64</td><td>157</td></tr><tr><td>0.3750</td><td> $\frac{3}{8}$ </td><td>47.90</td><td>14.1</td><td>382</td><td>47.8</td><td>64.2</td><td>5.21</td><td>40.4</td><td>20.2</td><td>23.0</td><td>1.69</td><td>127</td></tr><tr><td>0.3125</td><td> $\frac{5}{16}$ </td><td>40.35</td><td>11.9</td><td>327</td><td>40.9</td><td>54.5</td><td>5.25</td><td>35.1</td><td>17.6</td><td>19.7</td><td>1.72</td><td>110</td></tr><tr><td rowspan="4">14 × 10</td><td>0.6250</td><td> $\frac{5}{8}$ </td><td>93.34</td><td>27.4</td><td>728</td><td>104</td><td>127</td><td>5.15</td><td>431</td><td>86.2</td><td>101</td><td>3.96</td><td>885</td></tr><tr><td>0.5000</td><td> $\frac{1}{2}$ </td><td>76.07</td><td>22.4</td><td>608</td><td>86.9</td><td>105</td><td>5.22</td><td>361</td><td>72.3</td><td>83.6</td><td>4.02</td><td>730</td></tr><tr><td>0.3750</td><td> $\frac{3}{8}$ </td><td>58.10</td><td>17.1</td><td>476</td><td>68.0</td><td>81.5</td><td>5.28</td><td>284</td><td>56.8</td><td>64.8</td><td>4.08</td><td>564</td></tr><tr><td>0.3125</td><td> $\frac{5}{16}$ </td><td>48.86</td><td>14.4</td><td>405</td><td>57.9</td><td>69.0</td><td>5.31</td><td>242</td><td>48.4</td><td>54.9</td><td>4.11</td><td>477</td></tr><tr><td rowspan="4">14 × 6</td><td>0.5000</td><td> $\frac{1}{2}$ </td><td>62.46</td><td>18.4</td><td>426</td><td>60.8</td><td>78.3</td><td>4.82</td><td>111</td><td>37.1</td><td>42.9</td><td>2.46</td><td>296</td></tr><tr><td>0.3750</td><td> $\frac{3}{8}$ </td><td>47.90</td><td>14.1</td><td>337</td><td>48.1</td><td>61.1</td><td>4.89</td><td>89.1</td><td>29.7</td><td>33.6</td><td>2.52</td><td>233</td></tr><tr><td>0.3125</td><td> $\frac{5}{16}$ </td><td>40.35</td><td>11.9</td><td>288</td><td>41.2</td><td>51.9</td><td>4.93</td><td>76.7</td><td>25.6</td><td>28.7</td><td>2.54</td><td>199</td></tr><tr><td>0.2500</td><td> $\frac{1}{4}$ </td><td>32.63</td><td>9.59</td><td>237</td><td>33.8</td><td>42.3</td><td>4.97</td><td>63.4</td><td>21.1</td><td>23.4</td><td>2.57</td><td>162</td></tr><tr><td rowspan="4">14 × 4</td><td>0.5000</td><td> $\frac{1}{2}$ </td><td>55.66</td><td>16.4</td><td>335</td><td>47.8</td><td>64.8</td><td>4.52</td><td>43.1</td><td>21.5</td><td>25.5</td><td>1.62</td><td>134</td></tr><tr><td>0.3750</td><td> $\frac{3}{8}$ </td><td>42.79</td><td>12.6</td><td>267</td><td>38.2</td><td>50.8</td><td>4.61</td><td>35.4</td><td>17.7</td><td>20.3</td><td>1.68</td><td>108</td></tr><tr><td>0.3125</td><td> $\frac{5}{16}$ </td><td>36.10</td><td>10.6</td><td>230</td><td>32.8</td><td>43.3</td><td>4.65</td><td>30.9</td><td>15.4</td><td>17.4</td><td>1.71</td><td>93.1</td></tr><tr><td>0.2500</td><td> $\frac{1}{4}$ </td><td>29.23</td><td>8.59</td><td>189</td><td>27.0</td><td>35.4</td><td>4.69</td><td>25.8</td><td>12.9</td><td>14.3</td><td>1.73</td><td>77.0</td></tr></table>

\*Outside dimensions across flat sides.   
\*\*Properties are based upon a nominal outside corner radius equal to two times the wall thickness.

<!-- source-page: 786 -->

Structural Tubing--Rectangular: Dimensions and Properties (Continued ) 

<table><tr><td colspan="4">Dimensions</td><td colspan="10">Properties**</td></tr><tr><td rowspan="2">Nominal* Size</td><td rowspan="2" colspan="2">Wall Thickness</td><td rowspan="2">Weight per Ft.</td><td rowspan="2">Area</td><td colspan="4">X-X Axis</td><td colspan="4">Y-Y Axis</td><td rowspan="2">J</td></tr><tr><td> $I_x$ </td><td> $S_x$ </td><td> $Z_x$ </td><td> $r_x$ </td><td> $I_y$ </td><td> $S_y$ </td><td> $Z_y$ </td><td> $r_y$ </td></tr><tr><td>In.</td><td colspan="2">In.</td><td>Lb.</td><td> $In.^2$ </td><td> $In.^4$ </td><td> $In.^3$ </td><td> $In.^3$ </td><td>In.</td><td> $In.^4$ </td><td> $In.^3$ </td><td> $In.^3$ </td><td>In.</td><td> $In.^4$ </td></tr><tr><td rowspan="7">12×8</td><td>0.6250</td><td> $5/8$ </td><td>76.33</td><td>22.4</td><td>418</td><td>69.7</td><td>87.1</td><td>4.32</td><td>222</td><td>55.3</td><td>65.6</td><td>3.14</td><td>481</td></tr><tr><td>0.5625</td><td> $9/16$ </td><td>69.48</td><td>20.4</td><td>387</td><td>64.5</td><td>79.9</td><td>4.35</td><td>205</td><td>51.3</td><td>60.3</td><td>3.17</td><td>442</td></tr><tr><td>0.5000</td><td> $1/2$ </td><td>62.46</td><td>18.4</td><td>353</td><td>58.9</td><td>72.4</td><td>4.39</td><td>188</td><td>46.9</td><td>54.7</td><td>3.20</td><td>401</td></tr><tr><td>0.3750</td><td> $3/8$ </td><td>47.90</td><td>14.1</td><td>279</td><td>46.5</td><td>56.5</td><td>4.45</td><td>149</td><td>37.3</td><td>42.7</td><td>3.26</td><td>312</td></tr><tr><td>0.3125</td><td> $5/16$ </td><td>40.35</td><td>11.9</td><td>239</td><td>39.8</td><td>47.9</td><td>4.49</td><td>128</td><td>32.0</td><td>36.3</td><td>3.28</td><td>265</td></tr><tr><td>0.2500</td><td> $1/4$ </td><td>32.63</td><td>9.59</td><td>196</td><td>32.6</td><td>39.1</td><td>4.52</td><td>105</td><td>26.3</td><td>29.6</td><td>3.31</td><td>216</td></tr><tr><td>0.1875</td><td> $3/16$ </td><td>24.73</td><td>7.27</td><td>151</td><td>25.1</td><td>29.8</td><td>4.55</td><td>81.1</td><td>20.3</td><td>22.7</td><td>3.34</td><td>165</td></tr><tr><td rowspan="7">12×6</td><td>0.6250</td><td> $5/8$ </td><td>67.82</td><td>19.9</td><td>337</td><td>56.2</td><td>72.9</td><td>4.11</td><td>112</td><td>37.2</td><td>44.5</td><td>2.37</td><td>286</td></tr><tr><td>0.5625</td><td> $9/16$ </td><td>61.83</td><td>18.2</td><td>313</td><td>52.2</td><td>67.1</td><td>4.15</td><td>104</td><td>34.7</td><td>41.0</td><td>2.39</td><td>264</td></tr><tr><td>0.5000</td><td> $1/2$ </td><td>55.66</td><td>16.4</td><td>287</td><td>47.8</td><td>60.9</td><td>4.19</td><td>96.0</td><td>32.0</td><td>37.4</td><td>2.42</td><td>241</td></tr><tr><td>0.3750</td><td> $3/8$ </td><td>42.79</td><td>12.6</td><td>228</td><td>38.1</td><td>47.7</td><td>4.26</td><td>77.2</td><td>25.7</td><td>29.4</td><td>2.48</td><td>190</td></tr><tr><td>0.3125</td><td> $5/16$ </td><td>36.10</td><td>10.6</td><td>196</td><td>32.6</td><td>40.6</td><td>4.30</td><td>66.6</td><td>22.2</td><td>25.1</td><td>2.51</td><td>162</td></tr><tr><td>0.2500</td><td> $1/4$ </td><td>29.23</td><td>8.59</td><td>161</td><td>26.9</td><td>33.2</td><td>4.33</td><td>55.2</td><td>18.4</td><td>20.6</td><td>2.53</td><td>132</td></tr><tr><td>0.1875</td><td> $3/16$ </td><td>22.18</td><td>6.52</td><td>124</td><td>20.7</td><td>25.4</td><td>4.37</td><td>42.8</td><td>14.3</td><td>15.8</td><td>2.56</td><td>101</td></tr><tr><td rowspan="7">12×4</td><td>0.6250</td><td> $5/8$ </td><td>59.32</td><td>17.4</td><td>257</td><td>42.8</td><td>58.6</td><td>3.84</td><td>41.8</td><td>20.9</td><td>25.8</td><td>1.55</td><td>127</td></tr><tr><td>0.5625</td><td> $9/16$ </td><td>54.17</td><td>15.9</td><td>240</td><td>39.9</td><td>54.2</td><td>3.88</td><td>39.6</td><td>19.8</td><td>24.0</td><td>1.58</td><td>119</td></tr><tr><td>0.5000</td><td> $1/2$ </td><td>48.85</td><td>14.4</td><td>221</td><td>36.8</td><td>49.4</td><td>3.92</td><td>36.9</td><td>18.5</td><td>22.0</td><td>1.60</td><td>110</td></tr><tr><td>0.3750</td><td> $3/8$ </td><td>37.69</td><td>11.1</td><td>178</td><td>29.6</td><td>39.0</td><td>4.01</td><td>30.5</td><td>15.2</td><td>17.6</td><td>1.66</td><td>89.0</td></tr><tr><td>0.3125</td><td> $5/16$ </td><td>31.84</td><td>9.36</td><td>153</td><td>25.5</td><td>33.3</td><td>4.05</td><td>26.6</td><td>13.3</td><td>15.1</td><td>1.69</td><td>76.9</td></tr><tr><td>0.2500</td><td> $1/4$ </td><td>25.82</td><td>7.59</td><td>127</td><td>21.1</td><td>27.3</td><td>4.09</td><td>22.3</td><td>11.1</td><td>12.5</td><td>1.71</td><td>63.6</td></tr><tr><td>0.1875</td><td> $3/16$ </td><td>19.63</td><td>5.77</td><td>98.2</td><td>16.4</td><td>21.0</td><td>4.13</td><td>17.5</td><td>8.75</td><td>9.63</td><td>1.74</td><td>49.3</td></tr><tr><td rowspan="2">12×2</td><td>0.2500</td><td> $1/4$ </td><td>22.42</td><td>6.59</td><td>92.2</td><td>15.4</td><td>21.4</td><td>3.74</td><td>4.62</td><td>4.62</td><td>5.38</td><td>0.837</td><td>15.9</td></tr><tr><td>0.1875</td><td> $3/16$ </td><td>17.08</td><td>5.02</td><td>72.0</td><td>12.0</td><td>16.6</td><td>3.79</td><td>3.76</td><td>3.76</td><td>4.24</td><td>0.865</td><td>12.8</td></tr><tr><td rowspan="7">10×8</td><td>0.6250</td><td> $5/8$ </td><td>67.82</td><td>19.9</td><td>266</td><td>53.2</td><td>65.9</td><td>3.65</td><td>187</td><td>46.8</td><td>56.4</td><td>3.07</td><td>367</td></tr><tr><td>0.5625</td><td> $9/16$ </td><td>61.83</td><td>18.2</td><td>247</td><td>49.3</td><td>60.6</td><td>3.68</td><td>174</td><td>43.5</td><td>52.0</td><td>3.09</td><td>337</td></tr><tr><td>0.5000</td><td> $1/2$ </td><td>55.66</td><td>16.4</td><td>226</td><td>45.2</td><td>55.1</td><td>3.72</td><td>160</td><td>39.9</td><td>47.2</td><td>3.12</td><td>306</td></tr><tr><td>0.3750</td><td> $3/8$ </td><td>42.79</td><td>12.6</td><td>180</td><td>35.9</td><td>43.1</td><td>3.78</td><td>127</td><td>31.8</td><td>37.0</td><td>3.18</td><td>239</td></tr><tr><td>0.3125</td><td> $5/16$ </td><td>36.10</td><td>10.6</td><td>154</td><td>30.8</td><td>36.7</td><td>3.81</td><td>109</td><td>27.3</td><td>31.5</td><td>3.21</td><td>203</td></tr><tr><td>0.2500</td><td> $1/4$ </td><td>29.23</td><td>8.59</td><td>127</td><td>25.4</td><td>30.0</td><td>3.84</td><td>90.2</td><td>22.5</td><td>25.8</td><td>3.24</td><td>166</td></tr><tr><td>0.1875</td><td> $3/16$ </td><td>22.18</td><td>6.52</td><td>97.9</td><td>19.6</td><td>23.0</td><td>3.87</td><td>69.7</td><td>17.4</td><td>19.7</td><td>3.27</td><td>127</td></tr><tr><td rowspan="7">10×6</td><td>0.6250</td><td> $5/8$ </td><td>59.32</td><td>17.4</td><td>211</td><td>42.2</td><td>54.2</td><td>3.48</td><td>93.5</td><td>31.2</td><td>37.7</td><td>2.32</td><td>221</td></tr><tr><td>0.5625</td><td> $9/16$ </td><td>54.17</td><td>15.9</td><td>197</td><td>39.3</td><td>50.0</td><td>3.51</td><td>87.5</td><td>29.2</td><td>34.9</td><td>2.34</td><td>204</td></tr><tr><td>0.5000</td><td> $1/2$ </td><td>48.85</td><td>14.4</td><td>181</td><td>36.2</td><td>45.6</td><td>3.55</td><td>80.8</td><td>26.9</td><td>31.9</td><td>2.37</td><td>187</td></tr><tr><td>0.3750</td><td> $3/8$ </td><td>37.69</td><td>11.1</td><td>145</td><td>29.0</td><td>35.9</td><td>3.62</td><td>65.4</td><td>21.8</td><td>25.2</td><td>2.43</td><td>147</td></tr><tr><td>0.3125</td><td> $5/16$ </td><td>31.84</td><td>9.36</td><td>125</td><td>25.0</td><td>30.7</td><td>3.65</td><td>56.5</td><td>18.8</td><td>21.5</td><td>2.46</td><td>126</td></tr><tr><td>0.2500</td><td> $1/4$ </td><td>25.82</td><td>7.59</td><td>103</td><td>20.6</td><td>25.1</td><td>3.69</td><td>46.9</td><td>15.6</td><td>17.7</td><td>2.49</td><td>103</td></tr><tr><td>0.1875</td><td> $3/16$ </td><td>19.63</td><td>5.77</td><td>79.8</td><td>16.0</td><td>19.3</td><td>3.72</td><td>36.5</td><td>12.2</td><td>13.6</td><td>2.51</td><td>79.1</td></tr><tr><td rowspan="7">10×5</td><td>0.6250</td><td> $5/8$ </td><td>55.06</td><td>16.2</td><td>183</td><td>36.7</td><td>48.3</td><td>3.37</td><td>60.0</td><td>24.0</td><td>29.3</td><td>1.93</td><td>157</td></tr><tr><td>0.5625</td><td> $9/16$ </td><td>50.34</td><td>14.8</td><td>171</td><td>34.3</td><td>44.7</td><td>3.40</td><td>56.5</td><td>22.6</td><td>27.2</td><td>1.95</td><td>146</td></tr><tr><td>0.5000</td><td> $1/2$ </td><td>45.45</td><td>13.4</td><td>158</td><td>31.6</td><td>40.8</td><td>3.44</td><td>52.5</td><td>21.0</td><td>25.0</td><td>1.98</td><td>134</td></tr><tr><td>0.3750</td><td> $3/8$ </td><td>35.13</td><td>10.3</td><td>128</td><td>25.5</td><td>32.3</td><td>3.51</td><td>42.9</td><td>17.1</td><td>19.9</td><td>2.04</td><td>10.7</td></tr><tr><td>0.3125</td><td> $5/16$ </td><td>29.72</td><td>8.73</td><td>110</td><td>22.0</td><td>27.6</td><td>3.55</td><td>37.2</td><td>14.9</td><td>17.0</td><td>2.07</td><td>91.5</td></tr><tr><td>0.2500</td><td> $1/4$ </td><td>24.12</td><td>7.09</td><td>91.2</td><td>18.2</td><td>22.7</td><td>3.59</td><td>31.1</td><td>12.4</td><td>14.0</td><td>2.09</td><td>75.2</td></tr><tr><td>0.1875</td><td> $3/16$ </td><td>18.35</td><td>5.39</td><td>70.8</td><td>14.2</td><td>17.4</td><td>3.62</td><td>24.3</td><td>9.71</td><td>10.8</td><td>2.12</td><td>58.0</td></tr><tr><td rowspan="4">10×4</td><td>0.5625</td><td> $9/16$ </td><td>46.51</td><td>13.7</td><td>146</td><td>29.3</td><td>39.4</td><td>3.27</td><td>32.9</td><td>16.4</td><td>20.1</td><td>1.55</td><td>93.8</td></tr><tr><td>0.5000</td><td> $1/2$ </td><td>42.05</td><td>12.4</td><td>136</td><td>27.1</td><td>36.1</td><td>3.31</td><td>30.8</td><td>15.4</td><td>18.5</td><td>1.58</td><td>86.9</td></tr><tr><td>0.3750</td><td> $3/8$ </td><td>32.58</td><td>9.58</td><td>110</td><td>22.0</td><td>28.7</td><td>3.39</td><td>25.5</td><td>12.8</td><td>14.9</td><td>1.63</td><td>70.4</td></tr><tr><td>0.3125</td><td> $5/16$ </td><td>27.59</td><td>8.11</td><td>95.5</td><td>19.1</td><td>24.6</td><td>3.43</td><td>22.4</td><td>11.2</td><td>12.8</td><td>1.66</td><td>60.8</td></tr></table>

All printed with permission of American Institute of Steel Construction

<!-- source-page: 787 -->

Structural Tubing--Rectangular: Dimensions and Properties (Continued ) 

<table><tr><td colspan="4">Dimensions</td><td colspan="10">Properties**</td></tr><tr><td rowspan="2">Nominal* Size</td><td rowspan="2" colspan="2">Wall Thickness</td><td rowspan="2">Weight per Ft.</td><td rowspan="2">Area</td><td colspan="4">X-X Axis</td><td colspan="4">Y-Y Axis</td><td rowspan="2">J</td></tr><tr><td> $I_x$ </td><td> $S_x$ </td><td> $Z_x$ </td><td> $r_x$ </td><td> $I_y$ </td><td> $S_y$ </td><td> $Z_y$ </td><td> $r_y$ </td></tr><tr><td>In.</td><td colspan="2">In.</td><td>Lb.</td><td>In. $^2$ </td><td>In. $^4$ </td><td>In. $^3$ </td><td>In. $^3$ </td><td>In.</td><td>In. $^4$ </td><td>In. $^3$ </td><td>In. $^3$ </td><td>In.</td><td>In. $^4$ </td></tr><tr><td></td><td>0.2500</td><td> $\frac{1}{4}$ </td><td>22.42</td><td>6.59</td><td>79.3</td><td>15.9</td><td>20.2</td><td>3.47</td><td>18.8</td><td>9.39</td><td>10.6</td><td>1.69</td><td>50.4</td></tr><tr><td></td><td>0.1875</td><td> $\frac{3}{16}$ </td><td>17.08</td><td>5.02</td><td>61.7</td><td>12.3</td><td>15.6</td><td>3.51</td><td>14.8</td><td>7.39</td><td>8.20</td><td>1.72</td><td>39.1</td></tr><tr><td>10 × 2</td><td>0.3750</td><td> $\frac{3}{8}$ </td><td>27.48</td><td>8.08</td><td>75.4</td><td>15.1</td><td>21.5</td><td>3.06</td><td>4.85</td><td>4.85</td><td>6.05</td><td>0.775</td><td>16.5</td></tr><tr><td></td><td>0.3125</td><td> $\frac{5}{16}$ </td><td>23.34</td><td>6.86</td><td>66.1</td><td>13.2</td><td>18.5</td><td>3.10</td><td>4.42</td><td>4.42</td><td>5.33</td><td>0.802</td><td>14.9</td></tr><tr><td></td><td>0.2500</td><td> $\frac{1}{4}$ </td><td>19.02</td><td>5.59</td><td>55.5</td><td>11.1</td><td>15.4</td><td>3.15</td><td>3.85</td><td>3.85</td><td>4.50</td><td>0.830</td><td>12.8</td></tr><tr><td></td><td>0.1875</td><td> $\frac{3}{16}$ </td><td>14.53</td><td>4.27</td><td>43.7</td><td>8.74</td><td>11.9</td><td>3.20</td><td>3.14</td><td>3.14</td><td>3.56</td><td>0.858</td><td>10.3</td></tr><tr><td>9 × 7</td><td>0.6250</td><td> $\frac{5}{8}$ </td><td>59.32</td><td>17.4</td><td>183</td><td>40.6</td><td>51.0</td><td>3.24</td><td>123</td><td>35.1</td><td>42.8</td><td>2.66</td><td>248</td></tr><tr><td></td><td>0.5625</td><td> $\frac{9}{16}$ </td><td>54.17</td><td>15.9</td><td>170</td><td>37.9</td><td>47.1</td><td>3.27</td><td>115</td><td>32.8</td><td>39.5</td><td>2.69</td><td>229</td></tr><tr><td></td><td>0.5000</td><td> $\frac{1}{2}$ </td><td>48.85</td><td>14.4</td><td>157</td><td>34.8</td><td>42.9</td><td>3.30</td><td>106</td><td>30.2</td><td>36.1</td><td>2.71</td><td>209</td></tr><tr><td></td><td>0.3750</td><td> $\frac{3}{8}$ </td><td>37.69</td><td>11.1</td><td>126</td><td>27.9</td><td>33.8</td><td>3.37</td><td>85.1</td><td>24.3</td><td>28.4</td><td>2.77</td><td>164</td></tr><tr><td></td><td>0.3125</td><td> $\frac{5}{16}$ </td><td>31.84</td><td>9.36</td><td>108</td><td>24.0</td><td>28.8</td><td>3.40</td><td>73.5</td><td>21.0</td><td>24.3</td><td>2.80</td><td>140</td></tr><tr><td></td><td>0.2500</td><td> $\frac{1}{4}$ </td><td>25.82</td><td>7.59</td><td>89.4</td><td>19.9</td><td>23.6</td><td>3.43</td><td>60.8</td><td>17.4</td><td>19.9</td><td>2.83</td><td>114</td></tr><tr><td></td><td>0.1875</td><td> $\frac{3}{16}$ </td><td>19.63</td><td>5.77</td><td>69.2</td><td>15.4</td><td>18.1</td><td>3.46</td><td>47.2</td><td>13.5</td><td>15.3</td><td>2.86</td><td>87.7</td></tr><tr><td>9 × 6</td><td>0.6250</td><td> $\frac{5}{8}$ </td><td>55.06</td><td>16.2</td><td>161</td><td>35.8</td><td>45.8</td><td>3.15</td><td>84.5</td><td>18.2</td><td>34.4</td><td>2.28</td><td>189</td></tr><tr><td></td><td>0.5625</td><td> $\frac{9}{16}$ </td><td>50.34</td><td>14.8</td><td>150</td><td>33.4</td><td>42.3</td><td>3.19</td><td>79.2</td><td>26.5</td><td>31.9</td><td>2.31</td><td>175</td></tr><tr><td></td><td>0.5000</td><td> $\frac{1}{2}$ </td><td>45.45</td><td>13.4</td><td>139</td><td>30.8</td><td>38.7</td><td>3.22</td><td>73.2</td><td>24.4</td><td>29.1</td><td>2.34</td><td>160</td></tr><tr><td></td><td>0.3750</td><td> $\frac{3}{8}$ </td><td>35.13</td><td>10.3</td><td>112</td><td>24.8</td><td>30.6</td><td>3.29</td><td>59.4</td><td>19.8</td><td>23.1</td><td>2.40</td><td>127</td></tr><tr><td></td><td>0.3125</td><td> $\frac{5}{16}$ </td><td>29.72</td><td>8.73</td><td>96.4</td><td>21.4</td><td>26.1</td><td>3.32</td><td>51.4</td><td>17.1</td><td>19.8</td><td>2.43</td><td>108</td></tr><tr><td></td><td>0.2500</td><td> $\frac{1}{4}$ </td><td>24.12</td><td>7.09</td><td>79.8</td><td>17.7</td><td>21.4</td><td>3.36</td><td>42.7</td><td>14.2</td><td>16.2</td><td>2.46</td><td>88.8</td></tr><tr><td></td><td>0.1875</td><td> $\frac{3}{16}$ </td><td>18.35</td><td>5.39</td><td>61.9</td><td>13.8</td><td>16.5</td><td>3.39</td><td>33.3</td><td>11.1</td><td>12.5</td><td>2.48</td><td>68.2</td></tr><tr><td>9 × 5</td><td>0.5625</td><td> $\frac{9}{16}$ </td><td>46.51</td><td>13.7</td><td>130</td><td>29.0</td><td>37.6</td><td>3.09</td><td>50.9</td><td>20.4</td><td>24.7</td><td>1.93</td><td>126</td></tr><tr><td></td><td>0.5000</td><td> $\frac{1}{2}$ </td><td>42.05</td><td>12.4</td><td>121</td><td>26.8</td><td>34.4</td><td>3.12</td><td>47.4</td><td>18.9</td><td>22.7</td><td>1.96</td><td>115</td></tr><tr><td></td><td>0.3750</td><td> $\frac{3}{8}$ </td><td>32.58</td><td>9.58</td><td>97.8</td><td>21.7</td><td>27.3</td><td>3.20</td><td>38.8</td><td>15.5</td><td>18.1</td><td>2.01</td><td>92.2</td></tr><tr><td></td><td>0.3125</td><td> $\frac{5}{16}$ </td><td>27.59</td><td>8.11</td><td>84.6</td><td>18.8</td><td>23.4</td><td>3.23</td><td>33.8</td><td>13.5</td><td>15.6</td><td>2.04</td><td>79.2</td></tr><tr><td></td><td>0.2500</td><td> $\frac{1}{4}$ </td><td>22.42</td><td>6.59</td><td>70.3</td><td>15.6</td><td>19.3</td><td>3.27</td><td>28.2</td><td>11.3</td><td>12.8</td><td>2.07</td><td>65.2</td></tr><tr><td></td><td>0.1875</td><td> $\frac{3}{16}$ </td><td>17.08</td><td>5.02</td><td>54.7</td><td>12.1</td><td>14.8</td><td>3.30</td><td>22.1</td><td>8.84</td><td>9.90</td><td>2.10</td><td>50.2</td></tr><tr><td>9 × 3</td><td>0.5000</td><td> $\frac{1}{2}$ </td><td>35.24</td><td>10.4</td><td>84.4</td><td>18.8</td><td>25.9</td><td>2.86</td><td>13.7</td><td>9.11</td><td>11.3</td><td>1.15</td><td>41.6</td></tr><tr><td></td><td>0.3750</td><td> $\frac{3}{8}$ </td><td>27.48</td><td>8.08</td><td>69.9</td><td>15.5</td><td>20.9</td><td>2.94</td><td>11.7</td><td>7.79</td><td>9.29</td><td>1.20</td><td>34.9</td></tr><tr><td></td><td>0.3125</td><td> $\frac{5}{16}$ </td><td>23.34</td><td>6.86</td><td>61.0</td><td>13.6</td><td>18.0</td><td>2.98</td><td>10.4</td><td>6.92</td><td>8.08</td><td>1.23</td><td>30.5</td></tr><tr><td></td><td>0.2500</td><td> $\frac{1}{4}$ </td><td>19.02</td><td>5.59</td><td>51.1</td><td>11.4</td><td>14.9</td><td>3.02</td><td>8.84</td><td>5.90</td><td>6.73</td><td>1.26</td><td>25.6</td></tr><tr><td></td><td>0.1875</td><td> $\frac{3}{16}$ </td><td>14.53</td><td>4.27</td><td>40.1</td><td>8.91</td><td>11.5</td><td>3.06</td><td>7.06</td><td>4.70</td><td>5.26</td><td>1.29</td><td>20.1</td></tr><tr><td>8 × 6</td><td>0.5625</td><td> $\frac{9}{16}$ </td><td>46.51</td><td>13.7</td><td>112</td><td>27.9</td><td>35.2</td><td>2.86</td><td>70.8</td><td>23.6</td><td>28.8</td><td>2.28</td><td>147</td></tr><tr><td></td><td>0.5000</td><td> $\frac{1}{2}$ </td><td>42.05</td><td>12.4</td><td>103</td><td>25.8</td><td>32.2</td><td>2.89</td><td>65.7</td><td>21.9</td><td>26.4</td><td>2.31</td><td>135</td></tr><tr><td></td><td>0.3750</td><td> $\frac{3}{8}$ </td><td>32.58</td><td>9.58</td><td>83.7</td><td>20.9</td><td>25.6</td><td>2.96</td><td>53.5</td><td>17.8</td><td>21.0</td><td>2.36</td><td>107</td></tr><tr><td></td><td>0.3125</td><td> $\frac{5}{16}$ </td><td>27.59</td><td>8.11</td><td>72.4</td><td>18.1</td><td>21.9</td><td>2.99</td><td>46.4</td><td>15.5</td><td>18.0</td><td>2.39</td><td>91.3</td></tr><tr><td></td><td>0.2500</td><td> $\frac{1}{4}$ </td><td>22.42</td><td>6.59</td><td>60.1</td><td>15.0</td><td>18.0</td><td>3.02</td><td>38.6</td><td>12.9</td><td>14.8</td><td>2.42</td><td>74.9</td></tr><tr><td></td><td>0.1875</td><td> $\frac{3}{16}$ </td><td>17.08</td><td>5.02</td><td>46.8</td><td>11.7</td><td>13.9</td><td>3.05</td><td>30.1</td><td>10.0</td><td>11.4</td><td>2.45</td><td>57.6</td></tr><tr><td>8 × 4</td><td>0.5625</td><td> $\frac{9}{16}$ </td><td>38.86</td><td>11.4</td><td>80.5</td><td>20.1</td><td>26.9</td><td>2.65</td><td>26.2</td><td>13.1</td><td>16.2</td><td>1.51</td><td>69.0</td></tr><tr><td></td><td>0.5000</td><td> $\frac{1}{2}$ </td><td>35.24</td><td>10.4</td><td>75.1</td><td>18.8</td><td>24.7</td><td>2.69</td><td>24.6</td><td>12.3</td><td>15.0</td><td>1.54</td><td>64.1</td></tr><tr><td></td><td>0.3750</td><td> $\frac{3}{8}$ </td><td>27.48</td><td>8.08</td><td>61.9</td><td>15.5</td><td>19.9</td><td>2.77</td><td>20.6</td><td>10.3</td><td>12.2</td><td>1.60</td><td>52.2</td></tr><tr><td></td><td>0.3125</td><td> $\frac{5}{16}$ </td><td>23.34</td><td>6.86</td><td>53.9</td><td>13.5</td><td>17.1</td><td>2.80</td><td>18.1</td><td>9.05</td><td>10.5</td><td>1.62</td><td>45.2</td></tr><tr><td></td><td>0.2500</td><td> $\frac{1}{4}$ </td><td>19.02</td><td>5.59</td><td>45.1</td><td>11.3</td><td>14.1</td><td>2.84</td><td>15.3</td><td>7.63</td><td>8.72</td><td>1.65</td><td>37.5</td></tr><tr><td></td><td>0.1875</td><td> $\frac{3}{16}$ </td><td>14.53</td><td>4.27</td><td>35.3</td><td>8.83</td><td>11.0</td><td>2.88</td><td>12.0</td><td>6.02</td><td>6.77</td><td>1.68</td><td>29.1</td></tr><tr><td>8 × 3</td><td>0.5000</td><td> $\frac{1}{2}$ </td><td>31.84</td><td>9.36</td><td>61.0</td><td>15.3</td><td>21.0</td><td>2.55</td><td>12.1</td><td>8.05</td><td>10.1</td><td>1.14</td><td>35.7</td></tr><tr><td></td><td>0.3750</td><td> $\frac{3}{8}$ </td><td>24.93</td><td>7.33</td><td>51.0</td><td>12.7</td><td>17.0</td><td>2.64</td><td>10.4</td><td>6.92</td><td>8.31</td><td>1.19</td><td>29.9</td></tr></table>

(Continued )

<!-- source-page: 788 -->

Structural Tubing--Rectangular: Dimensions and Properties (Continued ) 

<table><tr><td colspan="4">Dimensions</td><td colspan="10">Properties**</td></tr><tr><td rowspan="2">Nominal* Size</td><td rowspan="2">Wall Thickness</td><td rowspan="2"></td><td rowspan="2">Weight per Ft.</td><td rowspan="2">Area</td><td colspan="4">X-X Axis</td><td colspan="4">Y-Y Axis</td><td rowspan="2">J</td></tr><tr><td> $I_x$ </td><td> $S_x$ </td><td> $Z_x$ </td><td> $r_x$ </td><td> $I_y$ </td><td> $S_y$ </td><td> $Z_y$ </td><td> $r_y$ </td></tr><tr><td>In.</td><td>In.</td><td></td><td>Lb.</td><td> $In.^2$ </td><td> $In.^4$ </td><td> $In.^3$ </td><td> $In.^3$ </td><td>In.</td><td> $In.^4$ </td><td> $In.^3$ </td><td> $In.^3$ </td><td>In.</td><td> $In.^4$ </td></tr><tr><td></td><td>0.3125</td><td> $5/16$ </td><td>21.21</td><td>6.23</td><td>44.7</td><td>11.2</td><td>14.7</td><td>2.68</td><td>9.25</td><td>6.16</td><td>7.24</td><td>1.22</td><td>26.3</td></tr><tr><td></td><td>0.2500</td><td> $1/4$ </td><td>17.32</td><td>5.09</td><td>37.6</td><td>9.40</td><td>12.2</td><td>2.72</td><td>7.90</td><td>5.26</td><td>6.05</td><td>1.25</td><td>22.1</td></tr><tr><td></td><td>0.1875</td><td> $3/16$ </td><td>13.25</td><td>3.89</td><td>29.6</td><td>7.40</td><td>9.49</td><td>2.76</td><td>6.31</td><td>4.21</td><td>4.73</td><td>1.27</td><td>17.3</td></tr><tr><td>8 × 2</td><td>0.3750</td><td> $3/8$ </td><td>22.37</td><td>6.58</td><td>40.1</td><td>10.0</td><td>14.2</td><td>2.47</td><td>3.85</td><td>3.85</td><td>4.83</td><td>0.765</td><td>12.6</td></tr><tr><td></td><td>0.3125</td><td> $5/16$ </td><td>19.08</td><td>5.61</td><td>35.5</td><td>8.87</td><td>12.3</td><td>2.51</td><td>3.52</td><td>3.52</td><td>4.28</td><td>0.792</td><td>11.4</td></tr><tr><td></td><td>0.2500</td><td> $1/4$ </td><td>15.62</td><td>4.59</td><td>30.1</td><td>7.52</td><td>10.3</td><td>2.56</td><td>3.08</td><td>3.08</td><td>3.63</td><td>0.819</td><td>9.84</td></tr><tr><td></td><td>0.1875</td><td> $3/16$ </td><td>11.97</td><td>3.52</td><td>23.9</td><td>5.97</td><td>8.02</td><td>2.60</td><td>2.52</td><td>2.52</td><td>2.88</td><td>0.847</td><td>7.94</td></tr><tr><td>7 × 5</td><td>0.5000</td><td> $1/2$ </td><td>35.24</td><td>10.4</td><td>63.5</td><td>18.1</td><td>23.1</td><td>2.48</td><td>37.2</td><td>14.9</td><td>18.2</td><td>1.90</td><td>79.9</td></tr><tr><td></td><td>0.3750</td><td> $3/8$ </td><td>27.48</td><td>8.08</td><td>52.2</td><td>14.9</td><td>18.5</td><td>2.54</td><td>30.8</td><td>12.3</td><td>14.6</td><td>1.95</td><td>64.2</td></tr><tr><td></td><td>0.3125</td><td> $5/16$ </td><td>23.34</td><td>6.86</td><td>45.5</td><td>13.0</td><td>15.9</td><td>2.58</td><td>26.9</td><td>10.8</td><td>12.6</td><td>1.98</td><td>55.3</td></tr><tr><td></td><td>0.2500</td><td> $1/4$ </td><td>19.02</td><td>5.59</td><td>38.0</td><td>10.9</td><td>13.2</td><td>2.61</td><td>22.6</td><td>9.04</td><td>10.4</td><td>2.01</td><td>45.6</td></tr><tr><td></td><td>0.1875</td><td> $3/16$ </td><td>14.53</td><td>4.27</td><td>29.8</td><td>8.50</td><td>10.2</td><td>2.64</td><td>17.7</td><td>7.10</td><td>8.10</td><td>2.04</td><td>35.3</td></tr><tr><td>7 × 4</td><td>0.5000</td><td> $1/2$ </td><td>31.84</td><td>9.36</td><td>52.9</td><td>15.1</td><td>19.8</td><td>2.38</td><td>21.5</td><td>10.8</td><td>13.3</td><td>1.52</td><td>53.0</td></tr><tr><td></td><td>0.3750</td><td> $3/8$ </td><td>24.93</td><td>7.33</td><td>44.0</td><td>12.6</td><td>16.0</td><td>2.45</td><td>18.1</td><td>9.06</td><td>10.8</td><td>1.57</td><td>43.3</td></tr><tr><td></td><td>0.3125</td><td> $5/16$ </td><td>21.21</td><td>6.23</td><td>38.5</td><td>11.0</td><td>13.8</td><td>2.49</td><td>16.0</td><td>7.98</td><td>9.36</td><td>1.60</td><td>37.5</td></tr><tr><td></td><td>0.2500</td><td> $1/4$ </td><td>17.32</td><td>5.09</td><td>32.3</td><td>9.23</td><td>11.5</td><td>2.52</td><td>13.5</td><td>6.75</td><td>7.78</td><td>1.63</td><td>31.2</td></tr><tr><td></td><td>0.1875</td><td> $3/16$ </td><td>13.25</td><td>3.89</td><td>25.4</td><td>7.26</td><td>8.91</td><td>2.55</td><td>10.7</td><td>5.34</td><td>6.06</td><td>1.66</td><td>24.2</td></tr><tr><td>7 × 3</td><td>0.5000</td><td> $1/2$ </td><td>28.43</td><td>8.36</td><td>42.3</td><td>12.1</td><td>16.6</td><td>2.25</td><td>10.5</td><td>6.99</td><td>8.84</td><td>1.12</td><td>29.8</td></tr><tr><td></td><td>0.3750</td><td> $3/8$ </td><td>22.37</td><td>6.58</td><td>35.7</td><td>10.2</td><td>13.5</td><td>2.33</td><td>9.08</td><td>6.05</td><td>7.32</td><td>1.18</td><td>25.1</td></tr><tr><td></td><td>0.3125</td><td> $5/16$ </td><td>19.08</td><td>5.61</td><td>31.5</td><td>9.00</td><td>11.8</td><td>2.37</td><td>8.11</td><td>5.41</td><td>6.40</td><td>1.20</td><td>22.0</td></tr><tr><td></td><td>0.2500</td><td> $1/4$ </td><td>15.62</td><td>4.59</td><td>26.6</td><td>7.61</td><td>9.79</td><td>2.41</td><td>6.95</td><td>4.63</td><td>5.36</td><td>1.23</td><td>18.5</td></tr><tr><td></td><td>0.1875</td><td> $3/16$ </td><td>11.97</td><td>3.52</td><td>21.1</td><td>6.02</td><td>7.63</td><td>2.45</td><td>5.57</td><td>3.71</td><td>4.21</td><td>1.26</td><td>14.6</td></tr><tr><td>7 × 2</td><td>0.2500</td><td> $1/4$ </td><td>13.91</td><td>4.09</td><td>20.9</td><td>5.98</td><td>8.10</td><td>2.26</td><td>2.69</td><td>2.69</td><td>3.19</td><td>0.812</td><td>8.36</td></tr><tr><td></td><td>0.1875</td><td> $3/16$ </td><td>10.70</td><td>3.14</td><td>16.7</td><td>4.77</td><td>6.36</td><td>2.31</td><td>2.21</td><td>2.21</td><td>2.54</td><td>0.839</td><td>6.74</td></tr><tr><td>6 × 5</td><td>0.5000</td><td> $1/2$ </td><td>31.84</td><td>9.36</td><td>42.9</td><td>14.3</td><td>18.1</td><td>2.14</td><td>32.1</td><td>12.8</td><td>16.0</td><td>1.85</td><td>62.9</td></tr><tr><td></td><td>0.3750</td><td> $3/8$ </td><td>24.93</td><td>7.33</td><td>35.6</td><td>11.9</td><td>14.7</td><td>2.21</td><td>26.8</td><td>10.7</td><td>12.9</td><td>1.91</td><td>50.9</td></tr><tr><td></td><td>0.3125</td><td> $5/16$ </td><td>21.21</td><td>6.23</td><td>31.2</td><td>10.4</td><td>12.7</td><td>2.24</td><td>23.5</td><td>9.40</td><td>11.2</td><td>1.94</td><td>43.9</td></tr><tr><td></td><td>0.2500</td><td> $1/4$ </td><td>17.32</td><td>5.09</td><td>26.2</td><td>8.74</td><td>10.5</td><td>2.27</td><td>19.8</td><td>7.91</td><td>9.26</td><td>1.97</td><td>36.3</td></tr><tr><td></td><td>0.1875</td><td> $3/16$ </td><td>13.25</td><td>3.89</td><td>20.6</td><td>6.87</td><td>8.15</td><td>2.30</td><td>15.6</td><td>6.23</td><td>7.20</td><td>2.00</td><td>28.1</td></tr><tr><td>6 × 4</td><td>0.5000</td><td> $1/2$ </td><td>28.43</td><td>8.36</td><td>35.3</td><td>11.8</td><td>15.4</td><td>2.06</td><td>18.4</td><td>9.21</td><td>11.5</td><td>1.48</td><td>42.1</td></tr><tr><td></td><td>0.3750</td><td> $3/8$ </td><td>22.37</td><td>6.58</td><td>29.7</td><td>9.90</td><td>12.5</td><td>2.13</td><td>15.6</td><td>7.82</td><td>9.44</td><td>1.54</td><td>34.6</td></tr><tr><td></td><td>0.3125</td><td> $5/16$ </td><td>19.08</td><td>5.61</td><td>26.2</td><td>8.72</td><td>10.9</td><td>2.16</td><td>13.8</td><td>6.92</td><td>8.21</td><td>1.57</td><td>30.1</td></tr><tr><td></td><td>0.2500</td><td> $1/4$ </td><td>15.62</td><td>4.59</td><td>22.1</td><td>7.36</td><td>9.06</td><td>2.19</td><td>11.7</td><td>5.87</td><td>6.84</td><td>1.60</td><td>25.0</td></tr><tr><td></td><td>0.1875</td><td> $3/16$ </td><td>11.97</td><td>3.52</td><td>17.4</td><td>5.81</td><td>7.06</td><td>2.23</td><td>9.32</td><td>4.66</td><td>5.34</td><td>1.63</td><td>19.5</td></tr><tr><td>6 × 3</td><td>0.3750</td><td> $3/8$ </td><td>19.82</td><td>5.83</td><td>23.8</td><td>7.92</td><td>10.4</td><td>2.02</td><td>7.78</td><td>5.19</td><td>6.34</td><td>1.16</td><td>20.3</td></tr><tr><td></td><td>0.3125</td><td> $5/16$ </td><td>16.96</td><td>4.98</td><td>21.1</td><td>7.03</td><td>9.11</td><td>2.06</td><td>6.98</td><td>4.65</td><td>5.56</td><td>1.18</td><td>17.9</td></tr><tr><td></td><td>0.2500</td><td> $1/4$ </td><td>13.91</td><td>4.09</td><td>17.9</td><td>5.98</td><td>7.62</td><td>2.09</td><td>6.00</td><td>4.00</td><td>4.67</td><td>1.21</td><td>15.1</td></tr><tr><td></td><td>0.1875</td><td> $3/16$ </td><td>10.70</td><td>3.14</td><td>14.3</td><td>4.76</td><td>5.97</td><td>2.13</td><td>4.83</td><td>3.22</td><td>3.68</td><td>1.24</td><td>11.9</td></tr><tr><td>6 × 2</td><td>0.3750</td><td> $3/8$ </td><td>17.27</td><td>5.08</td><td>17.8</td><td>5.94</td><td>8.33</td><td>1.87</td><td>2.84</td><td>2.84</td><td>3.61</td><td>0.748</td><td>8.72</td></tr><tr><td></td><td>0.3125</td><td> $5/16$ </td><td>14.83</td><td>4.36</td><td>16.0</td><td>5.34</td><td>7.33</td><td>1.92</td><td>2.62</td><td>2.62</td><td>3.22</td><td>0.775</td><td>7.94</td></tr><tr><td></td><td>0.2500</td><td> $1/4$ </td><td>12.21</td><td>3.59</td><td>13.8</td><td>4.60</td><td>6.18</td><td>1.96</td><td>2.31</td><td>2.31</td><td>2.75</td><td>0.802</td><td>6.88</td></tr><tr><td></td><td>0.1875</td><td> $3/16$ </td><td>9.42</td><td>2.77</td><td>11.1</td><td>3.70</td><td>4.88</td><td>2.00</td><td>1.90</td><td>1.90</td><td>2.20</td><td>0.829</td><td>5.56</td></tr><tr><td>5 × 4</td><td>0.3750</td><td> $3/8$ </td><td>19.82</td><td>5.83</td><td>18.7</td><td>7.50</td><td>9.44</td><td>1.79</td><td>13.2</td><td>6.58</td><td>8.08</td><td>1.50</td><td>26.3</td></tr><tr><td></td><td>0.3125</td><td> $5/16$ </td><td>16.96</td><td>4.98</td><td>16.6</td><td>6.65</td><td>8.24</td><td>1.83</td><td>11.7</td><td>5.85</td><td>7.05</td><td>1.53</td><td>22.9</td></tr><tr><td></td><td>0.2500</td><td> $1/4$ </td><td>13.91</td><td>4.09</td><td>14.1</td><td>5.65</td><td>6.89</td><td>1.86</td><td>9.98</td><td>4.99</td><td>5.90</td><td>1.56</td><td>19.1</td></tr><tr><td></td><td>0.1875</td><td> $3/16$ </td><td>10.70</td><td>3.14</td><td>11.2</td><td>4.49</td><td>5.39</td><td>1.89</td><td>7.96</td><td>3.98</td><td>4.63</td><td>1.59</td><td>14.9</td></tr></table>

All printed with permission of American Institute of Steel Construction

<!-- source-page: 789 -->

Structural Tubing--Rectangular: Dimensions and Properties (Continued ) 

<table><tr><td colspan="4">Dimensions</td><td colspan="10">Properties**</td></tr><tr><td rowspan="2">Nominal* Size</td><td rowspan="2">Wall Thickness</td><td rowspan="2"></td><td rowspan="2">Weight per Ft.</td><td rowspan="2">Area</td><td colspan="4">X-X Axis</td><td colspan="4">Y-Y Axis</td><td rowspan="2">J</td></tr><tr><td> $I_x$ </td><td> $S_x$ </td><td> $Z_x$ </td><td> $r_x$ </td><td> $I_y$ </td><td> $S_y$ </td><td> $Z_y$ </td><td> $r_y$ </td></tr><tr><td>In.</td><td>In.</td><td></td><td>Lb.</td><td> $In.^2$ </td><td> $In.^4$ </td><td> $In.^3$ </td><td> $In.^3$ </td><td>In.</td><td> $In.^4$ </td><td> $In.^3$ </td><td> $In.^3$ </td><td>In.</td><td> $In.^4$ </td></tr><tr><td rowspan="5">5 × 3</td><td>0.5000</td><td> $1/2$ </td><td>21.63</td><td>6.36</td><td>16.9</td><td>6.75</td><td>9.20</td><td>1.63</td><td>7.33</td><td>4.88</td><td>6.35</td><td>1.07</td><td>18.2</td></tr><tr><td>0.3750</td><td> $3/8$ </td><td>17.27</td><td>5.08</td><td>14.7</td><td>5.89</td><td>7.71</td><td>1.70</td><td>6.48</td><td>4.32</td><td>5.35</td><td>1.13</td><td>15.6</td></tr><tr><td>0.3125</td><td> $5/16$ </td><td>14.83</td><td>4.36</td><td>13.2</td><td>5.27</td><td>6.77</td><td>1.74</td><td>5.85</td><td>3.90</td><td>4.72</td><td>1.16</td><td>13.8</td></tr><tr><td>0.2500</td><td> $1/4$ </td><td>12.21</td><td>3.59</td><td>11.3</td><td>4.52</td><td>5.70</td><td>1.77</td><td>5.05</td><td>3.37</td><td>3.99</td><td>1.19</td><td>11.7</td></tr><tr><td>0.1875</td><td> $3/16$ </td><td>9.42</td><td>2.77</td><td>9.06</td><td>3.62</td><td>4.49</td><td>1.81</td><td>4.08</td><td>2.72</td><td>3.15</td><td>1.21</td><td>9.21</td></tr><tr><td rowspan="3">5 × 2</td><td>0.3125</td><td> $5/16$ </td><td>12.70</td><td>3.73</td><td>9.74</td><td>3.90</td><td>5.31</td><td>1.62</td><td>2.16</td><td>2.16</td><td>2.70</td><td>0.762</td><td>6.24</td></tr><tr><td>0.2500</td><td> $1/4$ </td><td>10.51</td><td>3.09</td><td>8.48</td><td>3.39</td><td>4.51</td><td>1.66</td><td>1.92</td><td>1.92</td><td>2.32</td><td>0.789</td><td>5.43</td></tr><tr><td>0.1875</td><td> $3/16$ </td><td>8.15</td><td>2.39</td><td>6.89</td><td>2.75</td><td>3.59</td><td>1.70</td><td>1.60</td><td>1.60</td><td>1.86</td><td>0.816</td><td>4.40</td></tr><tr><td rowspan="3">4 × 3</td><td>0.3125</td><td> $5/16$ </td><td>12.70</td><td>3.73</td><td>7.45</td><td>3.72</td><td>4.75</td><td>1.41</td><td>4.71</td><td>3.14</td><td>3.88</td><td>1.12</td><td>9.89</td></tr><tr><td>0.2500</td><td> $1/4$ </td><td>10.51</td><td>3.09</td><td>6.45</td><td>3.23</td><td>4.03</td><td>1.45</td><td>4.10</td><td>2.74</td><td>3.30</td><td>1.15</td><td>8.41</td></tr><tr><td>0.1875</td><td> $3/16$ </td><td>8.15</td><td>2.39</td><td>5.23</td><td>2.62</td><td>3.20</td><td>1.48</td><td>3.34</td><td>2.23</td><td>2.62</td><td>1.18</td><td>6.67</td></tr><tr><td rowspan="3">4 × 2</td><td>0.3125</td><td> $5/16$ </td><td>10.58</td><td>3.11</td><td>5.32</td><td>2.66</td><td>3.60</td><td>1.31</td><td>1.71</td><td>1.71</td><td>2.17</td><td>0.743</td><td>4.58</td></tr><tr><td>0.2500</td><td> $1/4$ </td><td>8.81</td><td>2.59</td><td>4.69</td><td>2.35</td><td>3.09</td><td>1.35</td><td>1.54</td><td>1.54</td><td>1.88</td><td>0.770</td><td>4.01</td></tr><tr><td>0.1875</td><td> $3/16$ </td><td>6.87</td><td>2.02</td><td>3.87</td><td>1.93</td><td>2.48</td><td>1.38</td><td>1.29</td><td>1.29</td><td>1.52</td><td>0.798</td><td>3.26</td></tr><tr><td rowspan="2">3.5 × 2.5</td><td>0.2500</td><td> $1/4$ </td><td>8.81</td><td>2.59</td><td>3.97</td><td>2.27</td><td>2.88</td><td>1.24</td><td>2.33</td><td>1.86</td><td>2.28</td><td>0.948</td><td>4.99</td></tr><tr><td>0.1875</td><td> $3/16$ </td><td>6.87</td><td>2.02</td><td>3.26</td><td>1.86</td><td>2.31</td><td>1.27</td><td>1.93</td><td>1.54</td><td>1.83</td><td>0.977</td><td>4.02</td></tr><tr><td rowspan="2">3 × 2</td><td>0.2500</td><td> $1/4$ </td><td>7.11</td><td>2.09</td><td>2.21</td><td>1.47</td><td>1.92</td><td>1.03</td><td>1.15</td><td>1.15</td><td>1.44</td><td>0.742</td><td>2.63</td></tr><tr><td>0.1875</td><td> $3/16$ </td><td>5.59</td><td>1.64</td><td>1.86</td><td>1.24</td><td>1.57</td><td>1.06</td><td>0.977</td><td>0.977</td><td>1.18</td><td>0.771</td><td>2.16</td></tr></table>

<!-- source-page: 790 -->

![](images/page-790_ead2f6d97360dbc3bad19d4c70cafc4e848800c98c4e88f0e09210654adf34df.jpg)

<details>
<summary>text_image</summary>

Y
B
t_f
R
t
X
X
A
Y
</details>

Aluminum Association Standard I-Beams: Dimensions, Areas, Weights, and Section Properties

<table><tr><td colspan="2">Size</td><td rowspan="3">Area $^{1}$ </td><td rowspan="3">Weight $^{2}$ </td><td rowspan="3">Flange Thickness  $t_f$ </td><td rowspan="3">Web Thickness  $t$ </td><td rowspan="3">Fillet Radius  $R$ </td><td colspan="6">Section Properties $^{3}$ </td></tr><tr><td rowspan="2">Depth A</td><td rowspan="2">Width B</td><td colspan="3">Axis X-X</td><td colspan="3">Axis Y-Y</td></tr><tr><td> $I$ </td><td> $S$ </td><td> $r$ </td><td> $I$ </td><td> $S$ </td><td> $r$ </td></tr><tr><td>in.</td><td>in.</td><td>in. $^{2}$ </td><td>lb/ft</td><td>in.</td><td>in.</td><td>in.</td><td>in. $^{4}$ </td><td>in. $^{3}$ </td><td>in.</td><td>in. $^{4}$ </td><td>in. $^{3}$ </td><td>in.</td></tr><tr><td>3.00</td><td>2.50</td><td>1.392</td><td>1.637</td><td>0.20</td><td>0.13</td><td>0.25</td><td>2.24</td><td>1.49</td><td>1.27</td><td>0.52</td><td>0.42</td><td>0.61</td></tr><tr><td>3.00</td><td>2.50</td><td>1.726</td><td>2.030</td><td>0.26</td><td>0.15</td><td>0.25</td><td>2.71</td><td>1.81</td><td>1.25</td><td>0.68</td><td>0.54</td><td>0.63</td></tr><tr><td>4.00</td><td>3.00</td><td>1.965</td><td>2.311</td><td>0.23</td><td>0.15</td><td>0.25</td><td>5.62</td><td>2.81</td><td>1.69</td><td>1.04</td><td>0.69</td><td>0.73</td></tr><tr><td>4.00</td><td>3.00</td><td>2.375</td><td>2.793</td><td>0.29</td><td>0.17</td><td>0.25</td><td>6.71</td><td>3.36</td><td>1.68</td><td>1.31</td><td>0.87</td><td>0.74</td></tr><tr><td>5.00</td><td>3.50</td><td>3.146</td><td>3.700</td><td>0.32</td><td>0.19</td><td>0.30</td><td>13.94</td><td>5.58</td><td>2.11</td><td>2.29</td><td>1.31</td><td>0.85</td></tr><tr><td>6.00</td><td>4.00</td><td>3.427</td><td>4.030</td><td>0.29</td><td>0.19</td><td>0.30</td><td>21.99</td><td>7.33</td><td>2.53</td><td>3.10</td><td>1.55</td><td>0.95</td></tr><tr><td>6.00</td><td>4.00</td><td>3.990</td><td>4.692</td><td>0.35</td><td>0.21</td><td>0.30</td><td>25.50</td><td>8.50</td><td>2.53</td><td>3.74</td><td>1.87</td><td>0.97</td></tr><tr><td>7.00</td><td>4.50</td><td>4.932</td><td>5.800</td><td>0.38</td><td>0.23</td><td>0.30</td><td>42.89</td><td>12.25</td><td>2.95</td><td>5.78</td><td>2.57</td><td>1.08</td></tr><tr><td>8.00</td><td>5.00</td><td>5.256</td><td>6.181</td><td>0.35</td><td>0.23</td><td>0.30</td><td>59.69</td><td>14.92</td><td>3.37</td><td>7.30</td><td>2.92</td><td>1.18</td></tr><tr><td>8.00</td><td>5.00</td><td>5.942</td><td>7.023</td><td>0.41</td><td>0.25</td><td>0.30</td><td>67.78</td><td>16.94</td><td>3.37</td><td>8.55</td><td>3.42</td><td>1.20</td></tr><tr><td>9.00</td><td>5.50</td><td>7.110</td><td>8.361</td><td>0.44</td><td>0.27</td><td>0.30</td><td>102.02</td><td>22.67</td><td>3.79</td><td>12.22</td><td>4.44</td><td>1.31</td></tr><tr><td>10.00</td><td>6.00</td><td>7.352</td><td>8.646</td><td>0.41</td><td>0.25</td><td>0.40</td><td>132.09</td><td>26.42</td><td>4.24</td><td>14.78</td><td>4.93</td><td>1.42</td></tr><tr><td>10.00</td><td>6.00</td><td>8.747</td><td>10.286</td><td>0.50</td><td>0.29</td><td>0.40</td><td>155.79</td><td>31.16</td><td>4.22</td><td>18.03</td><td>6.01</td><td>1.44</td></tr><tr><td>12.00</td><td>7.00</td><td>9.925</td><td>11.672</td><td>0.47</td><td>0.29</td><td>0.40</td><td>255.57</td><td>42.60</td><td>5.07</td><td>26.90</td><td>7.69</td><td>1.65</td></tr><tr><td>12.00</td><td>7.00</td><td>12.153</td><td>14.292</td><td>0.62</td><td>0.31</td><td>0.40</td><td>317.33</td><td>52.89</td><td>5.11</td><td>35.48</td><td>10.14</td><td>1.71</td></tr></table>

1 Areas listed are based on nominal dimensions.

2 Weights per foot area are based on nominal dimensions and a density of 0.098 pound per cubic inch which is the density of alloy 6061.

3 I ¼ moment of inertia; S ¼ section modulus; r ¼ radius of gyration.

4 Users are encouraged to ascertain current availability of particular structural shapes through inquires to their suppliers.

Printed with permission of the Aluminum Association from 1988 Ed., Aluminum Standards and Data