For those whom are familiar with septic tanks, the leach field is basically a long draining area for your sewage (unlike city areas which simply have a sewage line)…
Anyway, I would normally not be concerned about a simple playground or kids running around our leach field, except…
I want to build a large playground in our yard (more like a raised deck that spans 8’ X 16’ for them to have a small ‘treehouse’ like feel). The only spot that it will fit places it right over the edge over the leach field. I thought it was going to completely clear it until I dug down 27" and hit the protective top layer and then stones…
I need to build 6 piers that drop below the frost line (about 36") that will hold this elevated structure…
While I know that messing with the leach field is never a smart idea, I was wondering since I’m not actually on any of the main drainage pipes (they’re a few feet deeper into the yard), would I cause major harm to my septic system by building on the very edge of the leach field…
The field measures 42’ X 20’ and I’m resting on about the edge by about 1-2’… as a result, it seems 2 of the 6 piers would intersect the right edge of the leach field…
Could I remove a 10" diameter section for those 2 piers, as long as it wasn’t near the main drainage pipe?
I may have some small leeway in moving the post piers away, but only a few inches at best…
I have a feeling that I should probably play it safe, but figured I’d ask any experts if they’ve found/know any ways around my dilemma…
Any suggestions are appreciated!