Manholes are placed in a sewer system to provide access for inspection, maintenance, and emergency service. Manholes should be placed at sewer junctions (i.e., tees, wyes, and crosses), upstream terminal ends of sewers, and locations where there is a change in sewer grade or direction. Manholes are locations where loads enter the gravity portion of the sewer system.

When you click the manhole element on the Layout toolbar, your mouse cursor changes into a manhole element symbol. Clicking in the drawing pane while this tool is active causes a manhole element to be placed at the location of the mouse cursor.