How to prevent the dwarf from getting stuck on the wrong side of a wall

dwarf-fortress

I dig my way to a small pool and flood an area to use as a farm. Now I'm told I want to wall it up before it rains and floods my fortress. I build a wall, but the dude who comes and builds it gets trapped on the wrong side of the wall. What can I do to avoid this?

Best Answer

Build(b->C->w) a wall on the side you don't want your dwarves trapped on, but suspend the construction before it's built(q->s). Then when the original wall is done, cancel the suspended wall(q->x).