</font><font color="blue" class="small">( I want to go the pipe route because I need to drive heavy equipment over the lines and chambers don't hold up.Bob hoe far apart are your lines spaced Thanks )</font>
You can drive over a line from/ to any of your components, but driving over the leach _field_ is a really bad idea. They need to be soft loose soil with some nice sod on top. Heavy equipment packs the soil tight, and you will not get any infiltration - if not this year, in a few years it will show. It might be possible to get away with it in some soils with some designs, but I would do anything at all to avoid driving anything heavy over a newer leach system - govt rules make them shallow & fragile, and you will damage it 80% of the time. And govt rules make them real expensive to move & reinstall - around here any how.
The concern is not if the pipe or infiltrator can take the traffic - its if the soil could take it & still do it's job of draining.... Most soils cannot.
--->Paul