Here is an autocad dwg file for details of drain . a channel or pipe carrying off surplus liquid, especially rainwater or liquid waste.
Roof Rainwater Drainage Sy
corporatel building , Powe
Construction view of elect
Cattle trail plan detail
Pedestrian ladder plan dwg
Footing plan and elevation
Construction Details of Go
Stair section detail dwg f
Site plan dwg file
Construction view of offic
Detail smoke extraction dw
Sky light plan detail dwg