Home Infrastructure Environmental Sanitation Frame and manhole cover - sewers Frame and manhole cover - sewers Description Save Typical detail of the frame and cover for the manhole used in sewage collection systems. Format DWG File size 1.05 MB DOWNLOAD DWG share your appreciation Related Posts Drying bed in a treatment plant. storm containment dam sewage systems brocal protection drain box Home drainage connection detail sludge thickness Rural basic sanitation Construction plumbing details and expansion joints Sewer El Palmar islet dredging study sewage project Water tunnel – conduit – drain grit channel slabs sewer and details Sanitation-detail settling chamber Typical details of drainage systems Lima and uliachin collector settler