Home Infrastructure Environmental Sanitation Manhole for sewers Manhole for sewers Description Save Manhole type 1 to be inserted in 1000 scale plans and it remains at 20 Format DWG File size 0.00 KB DOWNLOAD DWG share your appreciation Related Posts well detail Stabilization pond for paddocks works of art in canals River Pontoon. Lateral intake – irrigation channel Sewer type ii sewage pond residential hydraulic design Simple manhole - storm drain. Storm drain concrete head Box culvert with detail installation and grating Water treatment plant sewage systems drain box Industrial water treatment Sanitary facilities – biodigester Alc pluvial delivery head french drain 3d settler flocculator