Home Infrastructure Environmental Sanitation french drain french drain Description Save It consists of a ditch filled with rocks that is designed to allow the infiltration of rainwater. Format DWG File size 55.14 KB DOWNLOAD DWG share your appreciation Related Posts Design of hydrobiological products plant Storm runoff map Septic tank for schools or houses Sewer calculation form Treatment plant for riles industries Sewerage and latrine sanitation system – Agua Santa Chumuch Sewers rain grates Sewer ptar pretreatment Detail of drainage works in roads Flocculators – water treatment return bag sewage pumping station tray aerator Septic tank channeling under road trench section Anaerobic treatment plant for rural communities of the Celica canton ditches