18x11m house building septic tank and sanitary detail drawing

<p class="MsoNormal">18x11m house building septic tank and sanitary detail drawing is given in this file. In this septic tank plan, and its section detailed drawing is given.<span style="mso-spacerun: yes;">&nbsp; </span>Sanitary ventilation drawing, and water lines from tank drawing is given.</p> <p class="MsoNormal">&nbsp;</p>