This Architectural Drawing is AutoCAD 2dd rawing of Bathroom trap Details in AutoCAD, dwg file. Floor trap or Nahni trap is provided in to the floor to collect waste water from bathroom, wash area, washbasin, and kitchen sink area etc. A trap's purpose is to stop noxious gases from escaping both inside and outside the dwelling. The depth of the water seal naturally affects the efficiency of the trap. The effectiveness of the trap increases with the water seal's depth. For more details and information download the drawing file.