Underground Water Drainage Tank Detail with 3000L Biodigestor Plan

This AutoCAD drawing shows an underground water drainage tank detail with a 3000L biodigestor plan designed for wastewater management and drainage system construction. The drawing illustrates the installation detail of a biodigestor tank with a storage capacity of approximately 3000 liters based on manufacturer specifications. The section drawing explains the underground placement of the drainage tank, including excavation depth, surrounding soil fill, and protective structural layers. The tank installation detail includes mortar sand repellent coating with a proportion of 1 to 4 applied as a protective waterproof layer reinforced with chicken mesh net. The mesh reinforcement is anchored with steel rods of approximately 3/8 inch diameter spaced at about 50 cm intervals to ensure structural stability and surface reinforcement.