## 6 Conclusions
\begin{tabular}{l l} \hline \multicolumn{2}{l}{For corner columns:} \\ \(\mathrm{\theta_{u}(\mathrm{l_{pl}}=615\ mm)=1/1.5\times[0.64\%+(0.05-0.0143) \times 0.615\times(1-0.5\times 0.615/1.35)]=1.6\%\), or} \\ \(\mathrm{\theta_{u}(\mathrm{l_{pl}}=160\ mm)=1/1.5\times[0.64\%+(0.05-0.0143) \times 0.16\times(1-0.5\times 0.16/1.35)]=0.8\%\)} \\ \hline Curvature ductility: & \\ Equation (4a) & for corner columns (\(\mathrm{v_{Ed}}=0.13<0.2\)): \\ Equation (4b) & \(\mathrm{\mu_{\phi}=0.45\times 0.0035/0.0025\times 350/(0.9\times 0.24\times 3 23)=3.16\) and} \\ \(\mathrm{\mu_{\phi}=1.5\times[0.5\times(3.16+1)]=3.1\) and \(\mathrm{\theta_{u}=3.1\times 0.64\%=2\%}\) \\ contribution of reinforcement pullout to the rotation capacity. & \\ \hline Equation (5b) & \(\mathrm{a_{l}=(1-150/(2\times 210))\cdot(1-150/(2\times 310))\times 4/6=0.32}\) \\ Equation (5a) & \(\mathrm{l_{ou,min}=14\times 500/[1.05+14.5\times 0.32\times 0.00151\times 2 40/16\times\sqrt{16}]=1513\ mm}\) \\ \hline \end{tabular} \begin{tabular}{l l} \hline \multicolumn{2}{l}{for corner columns:} \\ \(\mathrm{V_{Rd,c}=0.41\times 16\times 250\times 0.9\times 0.24\times 323/1000\approx 29\ kN\)} \\ for peripheral: \\ \(\mathrm{V_{Rd,c}=0.41\times 16\times 250\times 0.9\times 0.27\times 323/1000\approx 3 2\ kN\)} \\ \(\mathrm{V_{Rd,s}=2\times(\pi\times\delta^{2}/4)/(150\times 210)\times 210\times 310 \times 240/1000=28\ kN\)} \\ Equation (6c) & \(\mathrm{V_{Rd,o}\,l_{corner}=1/1.151(350-0.9\times 0.24\times 323)/(2\times 1350)\times \min(181.25,0.55\times 250\times 350\times 16/100)+0.89\times(29+28)\approx 60\ kN\)} \\ \(\mathrm{60\ kN<1.5\,V_{fl}=1.5\times 66=99\ kN}\) \\ \(\mathrm{V_{Rd,o}\,l_{periph.}=1/1.151(350-0.9\times 0.27\times 323)/(2\times 1350)\times \min(362.5,0.55\times 250\times 350\times 16/100)+0.92\times(32+28)\approx 60\ kN\)} \\ \(\mathrm{80\ kN<1.5\,V_{fl}=1.5\times 85\approx 128\ kN}\) \\ \hline \end{tabular} \begin{tabular}{l l} \hline \multicolumn{2}{l}{\(\mathrm{K_{eff}=4\ (corner\ columns)\ \times 3810\ kN/m+4\ (per.\ columns)\ \times 4910\ kN/m+(central\ column)\ \times 3810\ kN/m\approx 38690\ kN/m}\)} \\ \hline \multicolumn{2}{l}{FRP as shear reinforcement:} \\ \(\mathrm{V_{Rd,o}=min(60\ kN,\ 80\ kN)=60\ kN\)} \\ \(\mathrm{V_{Rd,o}=min(1.5\mathrm{V_{fl,corner}},1.5\mathrm{V_{fl, peripheral}})}\) \\ \(\mathrm{V_{Rd,o}=min(V_{Rd,o,corner},V_{Rd,o,peripheral})}\) \\ \(\mathrm{V_{Rd,f}=1.5\mathrm{V_{fl}}-V_{Rd,o}=(2t_{f}/50)\times 3\mathrm{bh}\times \mathrm{Ef}\times\varepsilon_{fu,h}}\) \\ \hline \end{tabular} \begin{tabular}{l l} \hline \multicolumn{2}{l}{\(\mathrm{K_{eff}=4\ (corner\ columns)\ \times 3810\ kN/m+4\ (per.\ columns)\ \times 4910\ kN/m+(central\ column)\ \times 3810\ kN/m\approx 38690\ kN/m}\)} \\ \hline \multicolumn{2}{l}{\(\mathrm{FBP}\) as shear reinforcement:} \\ \(\mathrm{V_{Rd,o}=min(60\ kN,\ 80\ kN)=60\ kN\)} \\ \(\mathrm{V_{Rd,o}=min(1.5\mathrm{V_{fl,corner}},1.5\mathrm{V_{fl, peripheral}})}\) \\ \(\mathrm{V_{Rd,o}=min(V_{Rd,o,corner},V_{Rd,o,peripheral})}\) \\ \(\mathrm{V_{Rd,f}=1.5\mathrm{V_{fl}}-V_{Rd,o}=(2t_{f}/50)\times 3\mathrm{bh}\times \mathrm{Ef}\times\varepsilon_{fu,h}}\) \\ \hline \end{tabular} \begin{tabular}{l l} \hline \multicolumn{2}{l}{\(\mathrm{K_{eff}=4\ (corner\ columns)\ \times 3810\ kN/m+4\ (per.\ columns)\ \times 4910\ kN/m+(central\ column)\ \times 3810\ kN/m\approx 38690\ kN/m}\)} \\ \(\mathrm{FBP}\) as shear reinforcement:} \\ \(\mathrm{V_{Rd,o}=min(60\ kN,\ 80\ kN)=60\ kN\)} \\ \(\mathrm{V_{Rd,o}=min(1.5\mathrm{V_{fl,corner}},-V_{Rd,o}=68\ kN\)}\) \\ \(\mathrm{V_{Rd,o}=min(V_{Rd,o,corner},V_{Rd,o,peripheral})}\) \\ \(\mathrm{V_{Rd,f}=1.5\mathrm{V_{fl}}-V_{Rd,o}=(2t_{f}/50)\times 3\mathrm{bh}\times \mathrm{Ef}\times\varepsilon_{fu,h}}\) \\ \hline \end{tabular}  \