_factor=zero\_matrix(RR,Number\_of\_storeys,1)</div>
<div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;00106 Modal\_mass=zero\_matrix(RR,Number\_of\_storeys,1)</div>
<div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;00107 sum\_modal\_mass=0</div>
<div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;00108 for j in range(Number\_of\_storeys):</div>
<div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;0010