(Solved): A column of 6.4-m effective length is obtained by connecting four L \( 89 \times 89 \times 9.5-\mat ...

A column of 6.4-m effective length is obtained by connecting four L \( 89 \times 89 \times 9.5-\mathrm{mm} \) steel angles with lacing bars as shown. Using allowable stress design, determine the allowable centric load for the column. Use \( \sigma_{\mathrm{Y}} \) \( =345 \mathrm{MPa} \) and \( \mathrm{E}=200 \mathrm{GPa} \).