Here is an autocad dwg file for details of drain . a channel or pipe carrying off surplus liquid, especially rainwater or liquid waste.
Detail of assembly
Construction detail layout
south facade details in Au
Anchor camera plan and sec
False background plan and
Concrete and iron slab of
Detail of first level and
Column and beam detail dwg
Beam plan and 3 D view det
Site plan detail dwg file
Roof plan layout dwg file
Joint detail dwg file