9         P1,P2=0,0</div>
<div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160;00110         m=X[j,:]</div>
<div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;00111         for i in range(Number\_of\_storeys):</div>
<div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;00112             P1=P1+Mass[i][i]*m[0][i]</div>
<div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;00113             P2=P2+Mass[i][i]*(m[0