Here is an autocad dwg file for details of drain . a channel or pipe carrying off surplus liquid, especially rainwater or liquid waste.
Construction detail in dwg
House plan center line pla
Beam and column joint sect
Detail section drawing of
Staircase, column and cons
Sectional view of stair ca
Floor section detail dwg f
Concrete plate plan detail
Durloc humid zone
Foundation plan of ayangar
Construction Details of Me
Stairs plan detail blocks