This Architectural Drawing is AutoCAD 2d drawing of Septic tank section details in AutoCAD, dwg file. Septic tanks are used to store waste water from homes or other buildings. Where there is no suitable drainage system, a septic tank is erected. Septic tanks are built and similarly designed in order to hold waste or sewage for 10 to 30 days. This tank is typically built between 1.5 and 1.8 metres below ground. For more details and information download the drawing file.