an class="lineno">  158</span>&#160;00154 \textcolor{stringliteral}{  Time\_periods(storey\_i,1) = Time\_period(storey\_i, storey\_i);}</div>
<div class="line"><a name="l00159"></a><span class="lineno">  159</span>&#160;00155 \textcolor{stringliteral}{end}</div>
<div class="line"><a name="l00160"></a><span class="lineno">  160</span>&#160;00156 \textcolor{stringliteral}{}</div>
<div class="line"><a name="l00161"></a><span class="lineno">  161</span>&#160;00157 \textcolor{stringliteral}{sum\_modal\_mass = 0;