Trench Tools

Trench systems are drawn in two steps, each with its own page:

1. Trench draws the trench line on the contour: the first, upslope trench of the system. See Trench Tool.
2. Contour builds the whole system on that line: the other trenches, the laterals and the bed. See Contour Systems (Contour Tool).

Both are in the System group of Tools > Septic design. The Contour tile shows once a trench line or a bed is on the map.