## 5 Design Comparisons of Web Bearing Capacity with Current Design Codes  
As stated previously, despite recent advancements in cold-formed stainless steel [41; 42; 43; 44; 45; 46; 47; 48; 49; 50; 51; 52], particularly recent research studies on web-bearing capacity [53; 54; 55; 56; 57; 58], available cold-formed stainless steel design regulations [25; 26] provide no web-bearing capacity equation to address the design of cold-formed austenitic stainless steel channels under localised interior bearing loading. Australian/New Zealand standard AS/NZS 4673 [24],  
Figure 6: Load-displacement comparison for C175\(\times\)60-t2.0-N50 under IL loading [11]. \begin{table}
\begin{tabular}{l c c c c c c} \hline \hline  & **Web** & **Plate Length** & **Filtet** & **Experimental** & **Finite Element** & \\  & **Height** & **Ratio** & **Radius** & **Ultimate Load** & **Ultimate Load** & **Comparison** \\  & **Ratio** & **(N/0)** & **Ratio** & **FExp** & **FFEA** & **FExp/FEA** \\  & **(h/0)** & **(N/0)** & **(r/t)** & **(kN)** & **(kN)** & **(kN)** & **(kN)** \\ \hline C100\(\times\)50-t1.50-N50 & 60.97 & 33.78 & 3.38 & 5.23 & 5.31 & 0.98 \\ C100\(\times\)50-t1.50-N75 & 60.89 & 50.34 & 3.36 & 5.49 & 5.61 & 0.98 \\ C100\(\times\)50-t1.50-N100 & 61.24 & 67.57 & 3.38 & 5.72 & 5.83 & 0.98 \\ C125\(\times\)50-t1.50-N50 & 76.45 & 33.56 & 3.36 & 5.43 & 5.56 & 0.98 \\ C125\(\times\)50-t1.50-N75 & 77.07 & 50.00 & 3.33 & 5.56 & 5.68 & 0.98 \\ C125\(\times\)50-t1.50-N100 & 76.96 & 66.67 & 3.33 & 5.81 & 5.98 & 0.97 \\ C150\(\times\)60-t2.0-N50 & 69.92 & 25.00 & 2.75 & 10.45 & 10.58 & 0.99 \\ C150\(\times\)60-t2.0-N75 & 69.31 & 37.50 & 2.75 & 10.64 & 10.72 & 0.99 \\ C150\(\times\)60-t2.0-N100 & 69.78 & 50.51 & 2.78 & 10.94 & 10.99 & 1.00 \\ C175\(\times\)60-t2.0-N50 & 82.61 & 25.13 & 2.76 & 10.28 & 10.36 & 0.99 \\ C175\(\times\)60-t2.0-N75 & 82.14 & 37.50 & 2.75 & 10.69 & 10.74 & 1.00 \\ C175\(\times\)60-t2.0-N100 & 81.58 & 50.00 & 2.75 & 10.97 & 11.05 & 0.99 \\ C200\(\times\)75-t3.0-N50 & 63.17 & 16.67 & 2.00 & 26.04 & 26.12 & 1.00 \\ C200\(\times\)75-t3.0-N75 & 63.36 & 25.08 & 2.01 & 26.50 & 26.63 & 1.00 \\ C200\(\times\)75-t3.0-N100 & 63.19 & 33.33 & 2.00 & 27.10 & 27.19 & 1.00 \\ C225\(\times\)75-t3.0-N50 & 71.17 & 16.67 & 2.00 & 26.45 & 26.31 & 1.01 \\ C225\(\times\)75-t3.0-N75 & 71.57 & 25.08 & 2.01 & 27.08 & 26.90 & 1.01 \\ C225\(\times\)75-t3.0-N100 & 71.64 & 33.56 & 2.01 & 26.09 & 25.94 & 1.01 \\ C250\(\times\)75-t3.0-N50 & 79.52 & 16.72 & 2.01 & 24.01 & 23.61 & 1.02 \\ C250\(\times\)75-t3.0-N75 & 79.77 & 25.08 & 2.01 & 24.39 & 24.11 & 1.01 \\ C250\(\times\)75-t3.0-N100 & 79.52 & 33.44 & 2.01 & 23.05 & 22.41 & 1.03 \\ \hline Mean & & & & & & 0.99 \\ COV & & & & & & 0.01 \\ Reliability & & & & & & & 2.61 \\ \hline \hline \end{tabular}
\end{table} 
Table 3: Experimental and FE ultimate loads for channels under IL loading. American standard SEI/ ASCE-8 [25], and European code EN 1993-1-4 [26] provide design rules for the design of cold-formed stainless steel components. Australian/New Zealand standard AS/NZS 4673 [24] adopted from American standard SEI/ ASCE-8 [25] and European code EN 1993-1-4 [26] refers to EN 1993-1-3 [27] for carbon steel. To assess the accuracy and validity of the current design equations, the web-bearing capacities determined from both laboratory and FE results were compared with the capacities predicted from design codes. Table 4 presents the web-bearing capacities obtained from laboratory tests for various channel dimensions as well as the capacities predicted from SEI/ ASCE-8 [25], and EN 1993-1-4 [26]. Comparing the comparison ratios for both design codes, It is clear that capacities from laboratory tests over the capacities determined from SEI/ ASCE-8 [25] averaged equal to 0.59 having a coefficient of variation of 0.04. This implies that the aforementioned design code is overly unconservative as much as 41% to predict web bearing capacities. Comparing the results from laboratory tests over the capacities determined from EN 1993-1-4 [26] averaged equal to 0.66 having a coefficient of variation of 0.03.